diff --git a/product/en/docs-mogdb/v2.1/installation-guide/standard-installation/7-recommended-parameter-settings.md b/product/en/docs-mogdb/v2.1/installation-guide/standard-installation/7-recommended-parameter-settings.md
index 29a86dabe8510406c0d422d1a395cb2345d50733..8794b1ee5d713c9d997604b1dbfd1afbf11b4c03 100644
--- a/product/en/docs-mogdb/v2.1/installation-guide/standard-installation/7-recommended-parameter-settings.md
+++ b/product/en/docs-mogdb/v2.1/installation-guide/standard-installation/7-recommended-parameter-settings.md
@@ -20,128 +20,138 @@ After installing the database, it is recommended to execute the following shell
 
 source ~/.bashrc
 
-memory=`free|awk '{print $2}' |sed -n 2p`
-if [[ $memory -le 4*1024*1024 ]]
+##连接访问相关参数
+function SecureAccess(){
+    gs_guc set -I all -N all -c "listen_addresses = '*'"
+    gs_guc set -I all -N all -c "remote_read_mode=non_authentication"
+    gs_guc set -I all -N all -c "password_encryption_type=1"
+    gs_guc set -I all -N all -c "password_reuse_time=0"
+    gs_guc set -I all -N all -c "password_lock_time=0"
+    gs_guc set -I all -N all -c "password_effect_time=0"
+    gs_guc set -I all -N all -c "session_timeout=0"
+}
+
+
+##wal相关参数
+function WAL(){
+    gs_guc set -I all -N all -c "wal_level=logical"
+    gs_guc set -I all -N all -c "full_page_writes=off"
+    gs_guc set -I all -N all -c "wal_log_hints=off"
+    gs_guc set -I all -N all -c "xloginsert_locks=48"
+    gs_guc set -I all -N all -c "advance_xlog_file_num=10"
+}
+
+
+##复制相关参数
+function replicationAndSlots(){
+    gs_guc set -I all -N all -c "synchronous_commit=on"
+    gs_guc set -I all -N all -c "wal_keep_segments=1024"
+    gs_guc set -I all -N all -c "max_wal_senders=16"
+    gs_guc set -I all -N all -c "most_available_sync=on"
+    gs_guc set -I all -N all -c "catchup2normal_wait_time=0"
+    gs_guc set -I all -N all -c "enable_slot_log=on"
+    gs_guc set -I all -N all -c "max_replication_slots=32"
+    gs_guc set -I all -N all -c "wal_receiver_timeout=60s"
+    gs_guc set -I all -N all -c "sync_config_strategy=none_node"
+}
+
+
+##日志相关参数
+function dbLog(){
+    gs_guc set -I all -N all -c "logging_collector=on"
+    gs_guc set -I all -N all -c "log_duration=off"
+    gs_guc set -I all -N all -c "log_line_prefix='%m %u %d %r %p %S'"
+    gs_guc set -I all -N all -c "log_checkpoints=on"
+}
+
+
+##性能统计相关参数
+function perfStats(){
+    gs_guc set -I all -N all -c "vacuum_cost_limit=1000"
+    gs_guc set -I all -N all -c "autovacuum_max_workers=10"
+    gs_guc set -I all -N all -c "autovacuum_naptime=20s"
+    gs_guc set -I all -N all -c "autovacuum_vacuum_cost_delay=10"
+    gs_guc set -I all -N all -c "autovacuum_vacuum_scale_factor=0.05"
+    gs_guc set -I all -N all -c "autovacuum_analyze_scale_factor=0.02"
+    gs_guc set -I all -N all -c "autovacuum_vacuum_threshold=200"
+    gs_guc set -I all -N all -c "autovacuum_analyze_threshold=200"
+    gs_guc set -I all -N all -c "autovacuum_io_limits=104857600"
+    gs_guc set -I all -N all -c "instr_unique_sql_count=200000"
+    gs_guc set -I all -N all -c "enable_save_datachanged_timestamp=off"
+    gs_guc set -I all -N all -c "track_sql_count=off"
+    gs_guc set -I all -N all -c "enable_instr_rt_percentile=off"
+    gs_guc set -I all -N all -c "enable_instance_metric_persistent=off"
+    gs_guc set -I all -N all -c "enable_logical_io_statistics=off"
+    gs_guc set -I all -N all -c "enable_user_metric_persistent=off"
+    gs_guc set -I all -N all -c "enable_mergejoin=on"
+    gs_guc set -I all -N all -c "enable_nestloop=on"
+    gs_guc set -I all -N all -c "enable_wdr_snapshot=on"
+    gs_guc set -I all -N all -c "log_min_duration_statement=200"
+    gs_guc set -I all -N all -c "track_activity_query_size=2048"
+}
+
+
+##其他参数
+function otherKeyParams(){
+    gs_guc set -I all -N all -c "cstore_buffers=16MB"
+    gs_guc set -I all -N all -c "local_syscache_threshold=32MB"
+    gs_guc set -I all -N all -c "standby_shared_buffers_fraction=1"
+    gs_guc set -I all -N all -c "checkpoint_segments=1024"
+    gs_guc set -I all -N all -c "checkpoint_completion_target=0.8"
+    gs_guc set -I all -N all -c "max_files_per_process=100000"
+    gs_guc set -I all -N all -c "behavior_compat_options='display_leading_zero'"
+    gs_guc set -I all -N all -c "lc_messages='en_US.UTF-8'"
+    gs_guc set -I all -N all -c "lc_monetary='en_US.UTF-8'"
+    gs_guc set -I all -N all -c "lc_numeric='en_US.UTF-8'"
+    gs_guc set -I all -N all -c "lc_time='en_US.UTF-8'"
+}
+
+##客户端白名单
+function setHba(){
+    gs_guc set -I all -N all -h "host     all      all  0.0.0.0/0    md5"
+}
+
+memory=`free -g|awk '{print $2}' |sed -n 2p`
+if [[ $memory -le 4 ]]
 then
-    max_process_memory=2GB
-    shared_buffers=128MB
-    max_connections=500
-    work_mem=4MB
-    maintenance_work_mem=256MB
-    echo "If the database fails to start, lower the parameters max_process_memory and shared_buffers"
-elif [[ $memory -gt 4*1024*1024 ]] && [[ $memory -le 8*1024*1024 ]]
-then
-    max_process_memory=5GB
-    shared_buffers=1GB
-    max_connections=1000
-    work_mem=16MB
-    maintenance_work_mem=1GB
+    echo "Defined values of specify parameters or use the default parameters"
 else
-    max_process_memory=$((memory*6/10/1024/1024))GB
-    shared_buffers=$((memory*3/10/1024/1024))GB
-    max_connections=3000
-    work_mem=64MB
-    maintenance_work_mem=2GB
+    if [[ $memory -gt 4 ]] && [[ $memory -le 8 ]] 
+    then
+        gs_guc set -I all -N all -c "max_process_memory=$((memory*6/10))GB"
+        gs_guc set -I all -N all -c "shared_buffers=$((memory*2/10))GB"
+        gs_guc set -I all -N all -c "max_connections=500"
+        gs_guc set -I all -N all -c "work_mem=16MB"
+        gs_guc set -I all -N all -c "maintenance_work_mem=512MB"
+        gs_guc set -I all -N all -c "wal_buffers=128MB"
+        gs_guc set -I all -N all -c "max_prepared_transactions=500"
+    elif [[ $memory -gt 8 ]] && [[ $memory -le 64 ]] 
+    then
+        gs_guc set -I all -N all -c "max_process_memory=$((memory*7/10))GB"
+        gs_guc set -I all -N all -c "shared_buffers=$((memory*2/10))GB"
+        gs_guc set -I all -N all -c "max_connections=1000"
+        gs_guc set -I all -N all -c "work_mem=64MB"
+        gs_guc set -I all -N all -c "maintenance_work_mem=1GB"
+        gs_guc set -I all -N all -c "wal_buffers=512MB"
+        gs_guc set -I all -N all -c "max_prepared_transactions=1000"
+    else
+        gs_guc set -I all -N all -c "max_process_memory=$((memory*8/10))GB"
+        gs_guc set -I all -N all -c "shared_buffers=$((memory*3/10))GB"
+        gs_guc set -I all -N all -c "max_connections=3000"
+        gs_guc set -I all -N all -c "work_mem=32MB"
+        gs_guc set -I all -N all -c "maintenance_work_mem=2GB"
+        gs_guc set -I all -N all -c "wal_buffers=1GB"
+        gs_guc set -I all -N all -c "max_prepared_transactions=3000"
+    fi
+    WAL
+    replicationAndSlots
+    dbLog
+    perfStats
+    otherKeyParams
 fi
 
-##Memory-related parameters
-gs_guc set -I all -N all -c "max_process_memory=${max_process_memory}"
-gs_guc set -I all -N all -c "shared_buffers=${shared_buffers}"
-gs_guc set -I all -N all -c "work_mem=${work_mem}"
-gs_guc set -I all -N all -c "maintenance_work_mem=${maintenance_work_mem}"
-gs_guc set -I all -N all -c "cstore_buffers=16MB"
-gs_guc set -I all -N all -c "wal_buffers=1GB"
-gs_guc set -I all -N all -c "local_syscache_threshold=32MB"
-gs_guc set -I all -N all -c "standby_shared_buffers_fraction=1"
-
-##Connection access-related parameters
-gs_guc set -I all -N all -c "max_connections=${max_connections}"
-gs_guc set -I all -N all -c "max_prepared_transactions=${max_connections}"
-gs_guc set -I all -N all -c "listen_addresses = '*'"
-gs_guc set -I all -N all -c "remote_read_mode=non_authentication"
-gs_guc set -I all -N all -c "password_encryption_type=1"
-gs_guc set -I all -N all -c "password_reuse_time=0"
-gs_guc set -I all -N all -c "password_lock_time=0"
-gs_guc set -I all -N all -c "password_effect_time=0"
-gs_guc set -I all -N all -c "session_timeout=0"
-
-##WAL-related parameters
-gs_guc set -I all -N all -c "wal_level=logical"
-gs_guc set -I all -N all -c "full_page_writes=off"
-gs_guc set -I all -N all -c "wal_log_hints=off"
-gs_guc set -I all -N all -c "xloginsert_locks=48"
-gs_guc set -I all -N all -c "advance_xlog_file_num=10"
-
-##Replication-related parameters
-gs_guc set -I all -N all -c "synchronous_commit=on"
-gs_guc set -I all -N all -c "wal_keep_segments=1024"
-gs_guc set -I all -N all -c "max_wal_senders=16"
-gs_guc set -I all -N all -c "recovery_max_workers=4"
-gs_guc set -I all -N all -c "most_available_sync=on"
-gs_guc set -I all -N all -c "max_size_for_xlog_prune=104857600"
-gs_guc set -I all -N all -c "catchup2normal_wait_time=0"
-gs_guc set -I all -N all -c "enable_slot_log=on"
-gs_guc set -I all -N all -c "max_replication_slots=32"
-gs_guc set -I all -N all -c "wal_receiver_timeout=60s"
-gs_guc set -I all -N all -c "sync_config_strategy=none_node"
-
-##Log-related parameters
-gs_guc set -I all -N all -c "logging_collector=on"
-gs_guc set -I all -N all -c "log_duration=on"
-gs_guc set -I all -N all -c "log_line_prefix='%m %u %d %r %p %S'"
-gs_guc set -I all -N all -c "log_checkpoints=on"
-gs_guc set -I all -N all -c "plog_merge_age=0"
-
-##Performance statistics-related parameters
-gs_guc set -I all -N all -c "vacuum_cost_limit=1000"
-gs_guc set -I all -N all -c "autovacuum_max_workers=10"
-gs_guc set -I all -N all -c "autovacuum_naptime=20s"
-gs_guc set -I all -N all -c "autovacuum_vacuum_cost_delay=10"
-gs_guc set -I all -N all -c "autovacuum_vacuum_scale_factor=0.05"
-gs_guc set -I all -N all -c "autovacuum_analyze_scale_factor=0.02"
-gs_guc set -I all -N all -c "autovacuum_vacuum_threshold=200"
-gs_guc set -I all -N all -c "autovacuum_analyze_threshold=200"
-gs_guc set -I all -N all -c "autovacuum_io_limits=104857600"
-gs_guc set -I all -N all -c "instr_unique_sql_count=200000"
-gs_guc set -I all -N all -c "enable_save_datachanged_timestamp=off"
-gs_guc set -I all -N all -c "track_sql_count=off"
-gs_guc set -I all -N all -c "enable_instr_rt_percentile=off"
-gs_guc set -I all -N all -c "enable_instance_metric_persistent=off"
-gs_guc set -I all -N all -c "enable_logical_io_statistics=off"
-gs_guc set -I all -N all -c "enable_user_metric_persistent=off"
-gs_guc set -I all -N all -c "enable_mergejoin=on"
-gs_guc set -I all -N all -c "enable_nestloop=on"
-gs_guc set -I all -N all -c "enable_pbe_optimization=off"
-gs_guc set -I all -N all -c "enable_resource_track=on"
-gs_guc set -I all -N all -c "enable_wdr_snapshot=on"
-gs_guc set -I all -N all -c "log_min_duration_statement=200"
-
-##Client whitelist
-gs_guc set -I all -N all -h "host     all      all  0.0.0.0/0    md5"
-
-##Other parameters
-gs_guc set -I all -N all -c "checkpoint_segments=1024"
-gs_guc set -I all -N all -c "checkpoint_completion_target=0.8"
-gs_guc set -I all -N all -c "pagewriter_sleep=200"
-
-gs_guc set -I all -N all -c "enable_alarm=off"
-gs_guc set -I all -N all -c "enable_codegen=off"
-gs_guc set -I all -N all -c "audit_enabled=off"
-gs_guc set -I all -N all -c "enable_asp=off"
-
-gs_guc set -I all -N all -c "lc_messages='en_US.UTF-8'"
-gs_guc set -I all -N all -c "lc_monetary='en_US.UTF-8'"
-gs_guc set -I all -N all -c "lc_numeric='en_US.UTF-8'"
-gs_guc set -I all -N all -c "lc_time='en_US.UTF-8'"
-
-gs_guc set -I all -N all -c "update_lockwait_timeout=1min"
-gs_guc set -I all -N all -c "lockwait_timeout=1min"
-
-gs_guc set -I all -N all -c "max_files_per_process=100000"
-gs_guc set -I all -N all -c "behavior_compat_options='display_leading_zero'"
-gs_guc set -I all -N all -c "enable_thread_pool=off"
-gs_guc set -I all -N all -c "gs_clean_timeout=0"
-gs_guc set -I all -N all -c "track_activity_query_size=2048"
+SecureAccess
+setHba
 ```
 
 Restart the database to make the parameters take effect.
diff --git a/product/en/docs-mogdb/v3.0/installation-guide/standard-installation/7-recommended-parameter-settings.md b/product/en/docs-mogdb/v3.0/installation-guide/standard-installation/7-recommended-parameter-settings.md
index e506e34fc909c9dc59a42adb5f50dde47e8916bd..2214d4ece2f28fda18f902dd044bbaaf60eb578b 100644
--- a/product/en/docs-mogdb/v3.0/installation-guide/standard-installation/7-recommended-parameter-settings.md
+++ b/product/en/docs-mogdb/v3.0/installation-guide/standard-installation/7-recommended-parameter-settings.md
@@ -20,127 +20,139 @@ After installing the database, it is recommended to execute the following shell
 
 source ~/.bashrc
 
-memory=`free|awk '{print $2}' |sed -n 2p`
-if [[ $memory -le 4*1024*1024 ]]
+##连接访问相关参数
+function SecureAccess(){
+    gs_guc set -I all -N all -c "listen_addresses = '*'"
+    gs_guc set -I all -N all -c "remote_read_mode=non_authentication"
+    gs_guc set -I all -N all -c "password_encryption_type=1"
+    gs_guc set -I all -N all -c "password_reuse_time=0"
+    gs_guc set -I all -N all -c "password_lock_time=0"
+    gs_guc set -I all -N all -c "password_effect_time=0"
+    gs_guc set -I all -N all -c "session_timeout=0"
+}
+
+
+##wal相关参数
+function WAL(){
+    gs_guc set -I all -N all -c "wal_level=logical"
+    gs_guc set -I all -N all -c "full_page_writes=off"
+    gs_guc set -I all -N all -c "wal_log_hints=off"
+    gs_guc set -I all -N all -c "xloginsert_locks=48"
+    gs_guc set -I all -N all -c "advance_xlog_file_num=10"
+}
+
+
+##复制相关参数
+function replicationAndSlots(){
+    gs_guc set -I all -N all -c "synchronous_commit=on"
+    gs_guc set -I all -N all -c "wal_keep_segments=1024"
+    gs_guc set -I all -N all -c "max_wal_senders=16"
+    gs_guc set -I all -N all -c "most_available_sync=on"
+    gs_guc set -I all -N all -c "catchup2normal_wait_time=0"
+    gs_guc set -I all -N all -c "enable_slot_log=on"
+    gs_guc set -I all -N all -c "max_replication_slots=32"
+    gs_guc set -I all -N all -c "wal_receiver_timeout=60s"
+    gs_guc set -I all -N all -c "sync_config_strategy=none_node"
+}
+
+
+##日志相关参数
+function dbLog(){
+    gs_guc set -I all -N all -c "logging_collector=on"
+    gs_guc set -I all -N all -c "log_duration=off"
+    gs_guc set -I all -N all -c "log_line_prefix='%m %u %d %r %p %S'"
+    gs_guc set -I all -N all -c "log_checkpoints=on"
+}
+
+
+##性能统计相关参数
+function perfStats(){
+    gs_guc set -I all -N all -c "vacuum_cost_limit=1000"
+    gs_guc set -I all -N all -c "autovacuum_max_workers=10"
+    gs_guc set -I all -N all -c "autovacuum_naptime=20s"
+    gs_guc set -I all -N all -c "autovacuum_vacuum_cost_delay=10"
+    gs_guc set -I all -N all -c "autovacuum_vacuum_scale_factor=0.05"
+    gs_guc set -I all -N all -c "autovacuum_analyze_scale_factor=0.02"
+    gs_guc set -I all -N all -c "autovacuum_vacuum_threshold=200"
+    gs_guc set -I all -N all -c "autovacuum_analyze_threshold=200"
+    gs_guc set -I all -N all -c "autovacuum_io_limits=104857600"
+    gs_guc set -I all -N all -c "instr_unique_sql_count=200000"
+    gs_guc set -I all -N all -c "enable_save_datachanged_timestamp=off"
+    gs_guc set -I all -N all -c "track_sql_count=off"
+    gs_guc set -I all -N all -c "enable_instr_rt_percentile=off"
+    gs_guc set -I all -N all -c "enable_instance_metric_persistent=off"
+    gs_guc set -I all -N all -c "enable_logical_io_statistics=off"
+    gs_guc set -I all -N all -c "enable_user_metric_persistent=off"
+    gs_guc set -I all -N all -c "enable_mergejoin=on"
+    gs_guc set -I all -N all -c "enable_nestloop=on"
+    gs_guc set -I all -N all -c "enable_wdr_snapshot=on"
+    gs_guc set -I all -N all -c "log_min_duration_statement=200"
+    gs_guc set -I all -N all -c "track_activity_query_size=2048"
+}
+
+
+##其他参数
+function otherKeyParams(){
+    gs_guc set -I all -N all -c "cstore_buffers=16MB"
+    gs_guc set -I all -N all -c "local_syscache_threshold=32MB"
+    gs_guc set -I all -N all -c "standby_shared_buffers_fraction=1"
+    gs_guc set -I all -N all -c "checkpoint_segments=1024"
+    gs_guc set -I all -N all -c "checkpoint_completion_target=0.8"
+    gs_guc set -I all -N all -c "max_files_per_process=100000"
+    gs_guc set -I all -N all -c "behavior_compat_options='display_leading_zero'"
+    gs_guc set -I all -N all -c "lc_messages='en_US.UTF-8'"
+    gs_guc set -I all -N all -c "lc_monetary='en_US.UTF-8'"
+    gs_guc set -I all -N all -c "lc_numeric='en_US.UTF-8'"
+    gs_guc set -I all -N all -c "lc_time='en_US.UTF-8'"
+}
+
+
+##客户端白名单
+function setHba(){
+    gs_guc set -I all -N all -h "host     all      all  0.0.0.0/0    md5"
+}
+
+memory=`free -g|awk '{print $2}' |sed -n 2p`
+if [[ $memory -le 4 ]]
 then
-    max_process_memory=2GB
-    shared_buffers=128MB
-    max_connections=500
-    work_mem=4MB
-    maintenance_work_mem=256MB
-    echo "If the database fails to start, lower the parameters max_process_memory and shared_buffers"
-elif [[ $memory -gt 4*1024*1024 ]] && [[ $memory -le 8*1024*1024 ]]
-then
-    max_process_memory=5GB
-    shared_buffers=1GB
-    max_connections=1000
-    work_mem=16MB
-    maintenance_work_mem=1GB
+    echo "Defined values of specify parameters or use the default parameters"
 else
-    max_process_memory=$((memory*6/10/1024/1024))GB
-    shared_buffers=$((memory*3/10/1024/1024))GB
-    max_connections=3000
-    work_mem=64MB
-    maintenance_work_mem=2GB
+    if [[ $memory -gt 4 ]] && [[ $memory -le 8 ]] 
+    then
+        gs_guc set -I all -N all -c "max_process_memory=$((memory*6/10))GB"
+        gs_guc set -I all -N all -c "shared_buffers=$((memory*2/10))GB"
+        gs_guc set -I all -N all -c "max_connections=500"
+        gs_guc set -I all -N all -c "work_mem=16MB"
+        gs_guc set -I all -N all -c "maintenance_work_mem=512MB"
+        gs_guc set -I all -N all -c "wal_buffers=128MB"
+        gs_guc set -I all -N all -c "max_prepared_transactions=500"
+    elif [[ $memory -gt 8 ]] && [[ $memory -le 64 ]] 
+    then
+        gs_guc set -I all -N all -c "max_process_memory=$((memory*7/10))GB"
+        gs_guc set -I all -N all -c "shared_buffers=$((memory*2/10))GB"
+        gs_guc set -I all -N all -c "max_connections=1000"
+        gs_guc set -I all -N all -c "work_mem=64MB"
+        gs_guc set -I all -N all -c "maintenance_work_mem=1GB"
+        gs_guc set -I all -N all -c "wal_buffers=512MB"
+        gs_guc set -I all -N all -c "max_prepared_transactions=1000"
+    else
+        gs_guc set -I all -N all -c "max_process_memory=$((memory*8/10))GB"
+        gs_guc set -I all -N all -c "shared_buffers=$((memory*3/10))GB"
+        gs_guc set -I all -N all -c "max_connections=3000"
+        gs_guc set -I all -N all -c "work_mem=32MB"
+        gs_guc set -I all -N all -c "maintenance_work_mem=2GB"
+        gs_guc set -I all -N all -c "wal_buffers=1GB"
+        gs_guc set -I all -N all -c "max_prepared_transactions=3000"
+    fi
+    WAL
+    replicationAndSlots
+    dbLog
+    perfStats
+    otherKeyParams
 fi
 
-##Memory-related parameters
-gs_guc set -I all -N all -c "max_process_memory=${max_process_memory}"
-gs_guc set -I all -N all -c "shared_buffers=${shared_buffers}"
-gs_guc set -I all -N all -c "work_mem=${work_mem}"
-gs_guc set -I all -N all -c "maintenance_work_mem=${maintenance_work_mem}"
-gs_guc set -I all -N all -c "cstore_buffers=16MB"
-gs_guc set -I all -N all -c "wal_buffers=1GB"
-gs_guc set -I all -N all -c "local_syscache_threshold=32MB"
-gs_guc set -I all -N all -c "standby_shared_buffers_fraction=1"
-
-##Connection access-related parameters
-gs_guc set -I all -N all -c "max_connections=${max_connections}"
-gs_guc set -I all -N all -c "max_prepared_transactions=${max_connections}"
-gs_guc set -I all -N all -c "listen_addresses = '*'"
-gs_guc set -I all -N all -c "remote_read_mode=non_authentication"
-gs_guc set -I all -N all -c "password_encryption_type=1"
-gs_guc set -I all -N all -c "password_reuse_time=0"
-gs_guc set -I all -N all -c "password_lock_time=0"
-gs_guc set -I all -N all -c "password_effect_time=0"
-gs_guc set -I all -N all -c "session_timeout=0"
-
-##WAL-related parameters
-gs_guc set -I all -N all -c "wal_level=logical"
-gs_guc set -I all -N all -c "full_page_writes=off"
-gs_guc set -I all -N all -c "wal_log_hints=off"
-gs_guc set -I all -N all -c "xloginsert_locks=48"
-gs_guc set -I all -N all -c "advance_xlog_file_num=10"
-
-##Replication-related parameters
-gs_guc set -I all -N all -c "synchronous_commit=on"
-gs_guc set -I all -N all -c "wal_keep_segments=1024"
-gs_guc set -I all -N all -c "max_wal_senders=16"
-gs_guc set -I all -N all -c "recovery_max_workers=4"
-gs_guc set -I all -N all -c "most_available_sync=on"
-gs_guc set -I all -N all -c "max_size_for_xlog_prune=104857600"
-gs_guc set -I all -N all -c "catchup2normal_wait_time=0"
-gs_guc set -I all -N all -c "enable_slot_log=on"
-gs_guc set -I all -N all -c "max_replication_slots=32"
-gs_guc set -I all -N all -c "wal_receiver_timeout=60s"
-gs_guc set -I all -N all -c "sync_config_strategy=none_node"
-
-##Log-related parameters
-gs_guc set -I all -N all -c "logging_collector=on"
-gs_guc set -I all -N all -c "log_duration=on"
-gs_guc set -I all -N all -c "log_line_prefix='%m %u %d %r %p %S'"
-gs_guc set -I all -N all -c "log_checkpoints=on"
-gs_guc set -I all -N all -c "plog_merge_age=0"
-
-##Performance statistics-related parameters
-gs_guc set -I all -N all -c "vacuum_cost_limit=1000"
-gs_guc set -I all -N all -c "autovacuum_max_workers=10"
-gs_guc set -I all -N all -c "autovacuum_naptime=20s"
-gs_guc set -I all -N all -c "autovacuum_vacuum_cost_delay=10"
-gs_guc set -I all -N all -c "autovacuum_vacuum_scale_factor=0.05"
-gs_guc set -I all -N all -c "autovacuum_analyze_scale_factor=0.02"
-gs_guc set -I all -N all -c "autovacuum_vacuum_threshold=200"
-gs_guc set -I all -N all -c "autovacuum_analyze_threshold=200"
-gs_guc set -I all -N all -c "autovacuum_io_limits=104857600"
-gs_guc set -I all -N all -c "instr_unique_sql_count=200000"
-gs_guc set -I all -N all -c "enable_save_datachanged_timestamp=off"
-gs_guc set -I all -N all -c "track_sql_count=off"
-gs_guc set -I all -N all -c "enable_instr_rt_percentile=off"
-gs_guc set -I all -N all -c "enable_instance_metric_persistent=off"
-gs_guc set -I all -N all -c "enable_logical_io_statistics=off"
-gs_guc set -I all -N all -c "enable_user_metric_persistent=off"
-gs_guc set -I all -N all -c "enable_mergejoin=on"
-gs_guc set -I all -N all -c "enable_nestloop=on"
-gs_guc set -I all -N all -c "enable_pbe_optimization=off"
-gs_guc set -I all -N all -c "enable_resource_track=on"
-gs_guc set -I all -N all -c "enable_wdr_snapshot=on"
-gs_guc set -I all -N all -c "log_min_duration_statement=200"
-
-##Client whitelist
-gs_guc set -I all -N all -h "host     all      all  0.0.0.0/0    md5"
-
-##Other parameters
-gs_guc set -I all -N all -c "checkpoint_segments=1024"
-gs_guc set -I all -N all -c "checkpoint_completion_target=0.8"
-gs_guc set -I all -N all -c "pagewriter_sleep=200"
-
-gs_guc set -I all -N all -c "enable_alarm=off"
-gs_guc set -I all -N all -c "enable_codegen=off"
-gs_guc set -I all -N all -c "audit_enabled=off"
-
-gs_guc set -I all -N all -c "lc_messages='en_US.UTF-8'"
-gs_guc set -I all -N all -c "lc_monetary='en_US.UTF-8'"
-gs_guc set -I all -N all -c "lc_numeric='en_US.UTF-8'"
-gs_guc set -I all -N all -c "lc_time='en_US.UTF-8'"
-
-gs_guc set -I all -N all -c "update_lockwait_timeout=1min"
-gs_guc set -I all -N all -c "lockwait_timeout=1min"
-
-gs_guc set -I all -N all -c "max_files_per_process=100000"
-gs_guc set -I all -N all -c "behavior_compat_options='display_leading_zero'"
-gs_guc set -I all -N all -c "enable_thread_pool=off"
-gs_guc set -I all -N all -c "gs_clean_timeout=0"
-gs_guc set -I all -N all -c "track_activity_query_size=2048"
+SecureAccess
+setHba
 ```
 
 Restart the database to make the parameters take effect.
diff --git a/product/zh/docs-mogdb/v2.1/installation-guide/standard-installation/7-recommended-parameter-settings.md b/product/zh/docs-mogdb/v2.1/installation-guide/standard-installation/7-recommended-parameter-settings.md
index 38447ea065f7c77456bc4dcc8e857adc39ca22cd..881e3dadba7da09f44b3a654c83861a69afcb37f 100644
--- a/product/zh/docs-mogdb/v2.1/installation-guide/standard-installation/7-recommended-parameter-settings.md
+++ b/product/zh/docs-mogdb/v2.1/installation-guide/standard-installation/7-recommended-parameter-settings.md
@@ -20,128 +20,139 @@ date: 2021-06-24
 
 source ~/.bashrc
 
-memory=`free|awk '{print $2}' |sed -n 2p`
-if [[ $memory -le 4*1024*1024 ]]
-then
-    max_process_memory=2GB
-    shared_buffers=128MB
-    max_connections=500
-    work_mem=4MB
-    maintenance_work_mem=256MB
-    echo "If the database fails to start, lower the parameters max_process_memory and shared_buffers"
-elif [[ $memory -gt 4*1024*1024 ]] && [[ $memory -le 8*1024*1024 ]]
-then
-    max_process_memory=5GB
-    shared_buffers=1GB
-    max_connections=1000
-    work_mem=16MB
-    maintenance_work_mem=1GB
-else
-    max_process_memory=$((memory*6/10/1024/1024))GB
-    shared_buffers=$((memory*3/10/1024/1024))GB
-    max_connections=3000
-    work_mem=64MB
-    maintenance_work_mem=2GB
-fi
-
-##内存相关参数
-gs_guc set -I all -N all -c "max_process_memory=${max_process_memory}"
-gs_guc set -I all -N all -c "shared_buffers=${shared_buffers}"
-gs_guc set -I all -N all -c "work_mem=${work_mem}"
-gs_guc set -I all -N all -c "maintenance_work_mem=${maintenance_work_mem}"
-gs_guc set -I all -N all -c "cstore_buffers=16MB"
-gs_guc set -I all -N all -c "wal_buffers=1GB"
-gs_guc set -I all -N all -c "local_syscache_threshold=32MB"
-gs_guc set -I all -N all -c "standby_shared_buffers_fraction=1"
-
 ##连接访问相关参数
-gs_guc set -I all -N all -c "max_connections=${max_connections}"
-gs_guc set -I all -N all -c "max_prepared_transactions=${max_connections}"
-gs_guc set -I all -N all -c "listen_addresses = '*'"
-gs_guc set -I all -N all -c "remote_read_mode=non_authentication"
-gs_guc set -I all -N all -c "password_encryption_type=1"
-gs_guc set -I all -N all -c "password_reuse_time=0"
-gs_guc set -I all -N all -c "password_lock_time=0"
-gs_guc set -I all -N all -c "password_effect_time=0"
-gs_guc set -I all -N all -c "session_timeout=0"
+function SecureAccess(){
+    gs_guc set -I all -N all -c "listen_addresses = '*'"
+    gs_guc set -I all -N all -c "remote_read_mode=non_authentication"
+    gs_guc set -I all -N all -c "password_encryption_type=1"
+    gs_guc set -I all -N all -c "password_reuse_time=0"
+    gs_guc set -I all -N all -c "password_lock_time=0"
+    gs_guc set -I all -N all -c "password_effect_time=0"
+    gs_guc set -I all -N all -c "session_timeout=0"
+}
+
 
 ##wal相关参数
-gs_guc set -I all -N all -c "wal_level=logical"
-gs_guc set -I all -N all -c "full_page_writes=off"
-gs_guc set -I all -N all -c "wal_log_hints=off"
-gs_guc set -I all -N all -c "xloginsert_locks=48"
-gs_guc set -I all -N all -c "advance_xlog_file_num=10"
+function WAL(){
+    gs_guc set -I all -N all -c "wal_level=logical"
+    gs_guc set -I all -N all -c "full_page_writes=off"
+    gs_guc set -I all -N all -c "wal_log_hints=off"
+    gs_guc set -I all -N all -c "xloginsert_locks=48"
+    gs_guc set -I all -N all -c "advance_xlog_file_num=10"
+}
+
 
 ##复制相关参数
-gs_guc set -I all -N all -c "synchronous_commit=on"
-gs_guc set -I all -N all -c "wal_keep_segments=1024"
-gs_guc set -I all -N all -c "max_wal_senders=16"
-gs_guc set -I all -N all -c "recovery_max_workers=4"
-gs_guc set -I all -N all -c "most_available_sync=on"
-gs_guc set -I all -N all -c "max_size_for_xlog_prune=104857600"
-gs_guc set -I all -N all -c "catchup2normal_wait_time=0"
-gs_guc set -I all -N all -c "enable_slot_log=on"
-gs_guc set -I all -N all -c "max_replication_slots=32"
-gs_guc set -I all -N all -c "wal_receiver_timeout=60s"
-gs_guc set -I all -N all -c "sync_config_strategy=none_node"
+function replicationAndSlots(){
+    gs_guc set -I all -N all -c "synchronous_commit=on"
+    gs_guc set -I all -N all -c "wal_keep_segments=1024"
+    gs_guc set -I all -N all -c "max_wal_senders=16"
+    gs_guc set -I all -N all -c "most_available_sync=on"
+    gs_guc set -I all -N all -c "catchup2normal_wait_time=0"
+    gs_guc set -I all -N all -c "enable_slot_log=on"
+    gs_guc set -I all -N all -c "max_replication_slots=32"
+    gs_guc set -I all -N all -c "wal_receiver_timeout=60s"
+    gs_guc set -I all -N all -c "sync_config_strategy=none_node"
+}
+
 
 ##日志相关参数
-gs_guc set -I all -N all -c "logging_collector=on"
-gs_guc set -I all -N all -c "log_duration=on"
-gs_guc set -I all -N all -c "log_line_prefix='%m %u %d %r %p %S'"
-gs_guc set -I all -N all -c "log_checkpoints=on"
-gs_guc set -I all -N all -c "plog_merge_age=0"
+function dbLog(){
+    gs_guc set -I all -N all -c "logging_collector=on"
+    gs_guc set -I all -N all -c "log_duration=off"
+    gs_guc set -I all -N all -c "log_line_prefix='%m %u %d %r %p %S'"
+    gs_guc set -I all -N all -c "log_checkpoints=on"
+}
+
 
 ##性能统计相关参数
-gs_guc set -I all -N all -c "vacuum_cost_limit=1000"
-gs_guc set -I all -N all -c "autovacuum_max_workers=10"
-gs_guc set -I all -N all -c "autovacuum_naptime=20s"
-gs_guc set -I all -N all -c "autovacuum_vacuum_cost_delay=10"
-gs_guc set -I all -N all -c "autovacuum_vacuum_scale_factor=0.05"
-gs_guc set -I all -N all -c "autovacuum_analyze_scale_factor=0.02"
-gs_guc set -I all -N all -c "autovacuum_vacuum_threshold=200"
-gs_guc set -I all -N all -c "autovacuum_analyze_threshold=200"
-gs_guc set -I all -N all -c "autovacuum_io_limits=104857600"
-gs_guc set -I all -N all -c "instr_unique_sql_count=200000"
-gs_guc set -I all -N all -c "enable_save_datachanged_timestamp=off"
-gs_guc set -I all -N all -c "track_sql_count=off"
-gs_guc set -I all -N all -c "enable_instr_rt_percentile=off"
-gs_guc set -I all -N all -c "enable_instance_metric_persistent=off"
-gs_guc set -I all -N all -c "enable_logical_io_statistics=off"
-gs_guc set -I all -N all -c "enable_user_metric_persistent=off"
-gs_guc set -I all -N all -c "enable_mergejoin=on"
-gs_guc set -I all -N all -c "enable_nestloop=on"
-gs_guc set -I all -N all -c "enable_pbe_optimization=off"
-gs_guc set -I all -N all -c "enable_resource_track=on"
-gs_guc set -I all -N all -c "enable_wdr_snapshot=on"
-gs_guc set -I all -N all -c "log_min_duration_statement=200"
+function perfStats(){
+    gs_guc set -I all -N all -c "vacuum_cost_limit=1000"
+    gs_guc set -I all -N all -c "autovacuum_max_workers=10"
+    gs_guc set -I all -N all -c "autovacuum_naptime=20s"
+    gs_guc set -I all -N all -c "autovacuum_vacuum_cost_delay=10"
+    gs_guc set -I all -N all -c "autovacuum_vacuum_scale_factor=0.05"
+    gs_guc set -I all -N all -c "autovacuum_analyze_scale_factor=0.02"
+    gs_guc set -I all -N all -c "autovacuum_vacuum_threshold=200"
+    gs_guc set -I all -N all -c "autovacuum_analyze_threshold=200"
+    gs_guc set -I all -N all -c "autovacuum_io_limits=104857600"
+    gs_guc set -I all -N all -c "instr_unique_sql_count=200000"
+    gs_guc set -I all -N all -c "enable_save_datachanged_timestamp=off"
+    gs_guc set -I all -N all -c "track_sql_count=off"
+    gs_guc set -I all -N all -c "enable_instr_rt_percentile=off"
+    gs_guc set -I all -N all -c "enable_instance_metric_persistent=off"
+    gs_guc set -I all -N all -c "enable_logical_io_statistics=off"
+    gs_guc set -I all -N all -c "enable_user_metric_persistent=off"
+    gs_guc set -I all -N all -c "enable_mergejoin=on"
+    gs_guc set -I all -N all -c "enable_nestloop=on"
+    gs_guc set -I all -N all -c "enable_wdr_snapshot=on"
+    gs_guc set -I all -N all -c "log_min_duration_statement=200"
+    gs_guc set -I all -N all -c "track_activity_query_size=2048"
+}
 
-##客户端白名单
-gs_guc set -I all -N all -h "host     all      all  0.0.0.0/0    md5"
 
 ##其他参数
-gs_guc set -I all -N all -c "checkpoint_segments=1024"
-gs_guc set -I all -N all -c "checkpoint_completion_target=0.8"
-gs_guc set -I all -N all -c "pagewriter_sleep=200"
-
-gs_guc set -I all -N all -c "enable_alarm=off"
-gs_guc set -I all -N all -c "enable_codegen=off"
-gs_guc set -I all -N all -c "audit_enabled=off"
-gs_guc set -I all -N all -c "enable_asp=off"
-
-gs_guc set -I all -N all -c "lc_messages='en_US.UTF-8'"
-gs_guc set -I all -N all -c "lc_monetary='en_US.UTF-8'"
-gs_guc set -I all -N all -c "lc_numeric='en_US.UTF-8'"
-gs_guc set -I all -N all -c "lc_time='en_US.UTF-8'"
-
-gs_guc set -I all -N all -c "update_lockwait_timeout=1min"
-gs_guc set -I all -N all -c "lockwait_timeout=1min"
-
-gs_guc set -I all -N all -c "max_files_per_process=100000"
-gs_guc set -I all -N all -c "behavior_compat_options='display_leading_zero'"
-gs_guc set -I all -N all -c "enable_thread_pool=off"
-gs_guc set -I all -N all -c "gs_clean_timeout=0"
-gs_guc set -I all -N all -c "track_activity_query_size=2048"
+function otherKeyParams(){
+    gs_guc set -I all -N all -c "cstore_buffers=16MB"
+    gs_guc set -I all -N all -c "local_syscache_threshold=32MB"
+    gs_guc set -I all -N all -c "standby_shared_buffers_fraction=1"
+    gs_guc set -I all -N all -c "checkpoint_segments=1024"
+    gs_guc set -I all -N all -c "checkpoint_completion_target=0.8"
+    gs_guc set -I all -N all -c "max_files_per_process=100000"
+    gs_guc set -I all -N all -c "behavior_compat_options='display_leading_zero'"
+    gs_guc set -I all -N all -c "lc_messages='en_US.UTF-8'"
+    gs_guc set -I all -N all -c "lc_monetary='en_US.UTF-8'"
+    gs_guc set -I all -N all -c "lc_numeric='en_US.UTF-8'"
+    gs_guc set -I all -N all -c "lc_time='en_US.UTF-8'"
+}
+
+
+##客户端白名单
+function setHba(){
+    gs_guc set -I all -N all -h "host     all      all  0.0.0.0/0    md5"
+}
+
+memory=`free -g|awk '{print $2}' |sed -n 2p`
+if [[ $memory -le 4 ]]
+then
+    echo "Defined values of specify parameters or use the default parameters"
+else
+    if [[ $memory -gt 4 ]] && [[ $memory -le 8 ]] 
+    then
+        gs_guc set -I all -N all -c "max_process_memory=$((memory*6/10))GB"
+        gs_guc set -I all -N all -c "shared_buffers=$((memory*2/10))GB"
+        gs_guc set -I all -N all -c "max_connections=500"
+        gs_guc set -I all -N all -c "work_mem=16MB"
+        gs_guc set -I all -N all -c "maintenance_work_mem=512MB"
+        gs_guc set -I all -N all -c "wal_buffers=128MB"
+        gs_guc set -I all -N all -c "max_prepared_transactions=500"
+    elif [[ $memory -gt 8 ]] && [[ $memory -le 64 ]] 
+    then
+        gs_guc set -I all -N all -c "max_process_memory=$((memory*7/10))GB"
+        gs_guc set -I all -N all -c "shared_buffers=$((memory*2/10))GB"
+        gs_guc set -I all -N all -c "max_connections=1000"
+        gs_guc set -I all -N all -c "work_mem=64MB"
+        gs_guc set -I all -N all -c "maintenance_work_mem=1GB"
+        gs_guc set -I all -N all -c "wal_buffers=512MB"
+        gs_guc set -I all -N all -c "max_prepared_transactions=1000"
+    else
+        gs_guc set -I all -N all -c "max_process_memory=$((memory*8/10))GB"
+        gs_guc set -I all -N all -c "shared_buffers=$((memory*3/10))GB"
+        gs_guc set -I all -N all -c "max_connections=3000"
+        gs_guc set -I all -N all -c "work_mem=32MB"
+        gs_guc set -I all -N all -c "maintenance_work_mem=2GB"
+        gs_guc set -I all -N all -c "wal_buffers=1GB"
+        gs_guc set -I all -N all -c "max_prepared_transactions=3000"
+    fi
+    WAL
+    replicationAndSlots
+    dbLog
+    perfStats
+    otherKeyParams
+fi
+
+SecureAccess
+setHba
 ```
 
 重启数据库，使参数生效
diff --git a/product/zh/docs-mogdb/v3.0/installation-guide/standard-installation/7-recommended-parameter-settings.md b/product/zh/docs-mogdb/v3.0/installation-guide/standard-installation/7-recommended-parameter-settings.md
index f9acbc4607fc7983b6fa2233c55107a0fd5815f8..2995ce02b7b04d7bd581d4d40948ed46cb1c9bdc 100644
--- a/product/zh/docs-mogdb/v3.0/installation-guide/standard-installation/7-recommended-parameter-settings.md
+++ b/product/zh/docs-mogdb/v3.0/installation-guide/standard-installation/7-recommended-parameter-settings.md
@@ -17,130 +17,140 @@ date: 2021-06-24
 
 ```bash
 #!/bin/bash
-
 source ~/.bashrc
 
-memory=`free|awk '{print $2}' |sed -n 2p`
-if [[ $memory -le 4*1024*1024 ]]
-then
-    max_process_memory=2GB
-    shared_buffers=128MB
-    max_connections=500
-    work_mem=4MB
-    maintenance_work_mem=256MB
-    echo "If the database fails to start, lower the parameters max_process_memory and shared_buffers"
-elif [[ $memory -gt 4*1024*1024 ]] && [[ $memory -le 8*1024*1024 ]]
-then
-    max_process_memory=5GB
-    shared_buffers=1GB
-    max_connections=1000
-    work_mem=16MB
-    maintenance_work_mem=1GB
-else
-    max_process_memory=$((memory*6/10/1024/1024))GB
-    shared_buffers=$((memory*3/10/1024/1024))GB
-    max_connections=3000
-    work_mem=64MB
-    maintenance_work_mem=2GB
-fi
-
-##内存相关参数
-gs_guc set -I all -N all -c "max_process_memory=${max_process_memory}"
-gs_guc set -I all -N all -c "shared_buffers=${shared_buffers}"
-gs_guc set -I all -N all -c "work_mem=${work_mem}"
-gs_guc set -I all -N all -c "maintenance_work_mem=${maintenance_work_mem}"
-gs_guc set -I all -N all -c "cstore_buffers=16MB"
-gs_guc set -I all -N all -c "wal_buffers=1GB"
-gs_guc set -I all -N all -c "local_syscache_threshold=32MB"
-gs_guc set -I all -N all -c "standby_shared_buffers_fraction=1"
-
 ##连接访问相关参数
-gs_guc set -I all -N all -c "max_connections=${max_connections}"
-gs_guc set -I all -N all -c "max_prepared_transactions=${max_connections}"
-gs_guc set -I all -N all -c "listen_addresses = '*'"
-gs_guc set -I all -N all -c "remote_read_mode=non_authentication"
-gs_guc set -I all -N all -c "password_encryption_type=1"
-gs_guc set -I all -N all -c "password_reuse_time=0"
-gs_guc set -I all -N all -c "password_lock_time=0"
-gs_guc set -I all -N all -c "password_effect_time=0"
-gs_guc set -I all -N all -c "session_timeout=0"
+function SecureAccess(){
+    gs_guc set -I all -N all -c "listen_addresses = '*'"
+    gs_guc set -I all -N all -c "remote_read_mode=non_authentication"
+    gs_guc set -I all -N all -c "password_encryption_type=1"
+    gs_guc set -I all -N all -c "password_reuse_time=0"
+    gs_guc set -I all -N all -c "password_lock_time=0"
+    gs_guc set -I all -N all -c "password_effect_time=0"
+    gs_guc set -I all -N all -c "session_timeout=0"
+}
+
 
 ##wal相关参数
-gs_guc set -I all -N all -c "wal_level=logical"
-gs_guc set -I all -N all -c "full_page_writes=off"
-gs_guc set -I all -N all -c "wal_log_hints=off"
-gs_guc set -I all -N all -c "xloginsert_locks=48"
-gs_guc set -I all -N all -c "advance_xlog_file_num=10"
+function WAL(){
+    gs_guc set -I all -N all -c "wal_level=logical"
+    gs_guc set -I all -N all -c "full_page_writes=off"
+    gs_guc set -I all -N all -c "wal_log_hints=off"
+    gs_guc set -I all -N all -c "xloginsert_locks=48"
+    gs_guc set -I all -N all -c "advance_xlog_file_num=10"
+}
+
 
 ##复制相关参数
-gs_guc set -I all -N all -c "synchronous_commit=on"
-gs_guc set -I all -N all -c "wal_keep_segments=1024"
-gs_guc set -I all -N all -c "max_wal_senders=16"
-gs_guc set -I all -N all -c "recovery_max_workers=4"
-gs_guc set -I all -N all -c "most_available_sync=on"
-gs_guc set -I all -N all -c "max_size_for_xlog_prune=104857600"
-gs_guc set -I all -N all -c "catchup2normal_wait_time=0"
-gs_guc set -I all -N all -c "enable_slot_log=on"
-gs_guc set -I all -N all -c "max_replication_slots=32"
-gs_guc set -I all -N all -c "wal_receiver_timeout=60s"
-gs_guc set -I all -N all -c "sync_config_strategy=none_node"
+function replicationAndSlots(){
+    gs_guc set -I all -N all -c "synchronous_commit=on"
+    gs_guc set -I all -N all -c "wal_keep_segments=1024"
+    gs_guc set -I all -N all -c "max_wal_senders=16"
+    gs_guc set -I all -N all -c "most_available_sync=on"
+    gs_guc set -I all -N all -c "catchup2normal_wait_time=0"
+    gs_guc set -I all -N all -c "enable_slot_log=on"
+    gs_guc set -I all -N all -c "max_replication_slots=32"
+    gs_guc set -I all -N all -c "wal_receiver_timeout=60s"
+    gs_guc set -I all -N all -c "sync_config_strategy=none_node"
+}
+
 
 ##日志相关参数
-gs_guc set -I all -N all -c "logging_collector=on"
-gs_guc set -I all -N all -c "log_duration=on"
-gs_guc set -I all -N all -c "log_line_prefix='%m %u %d %r %p %S'"
-gs_guc set -I all -N all -c "log_checkpoints=on"
-gs_guc set -I all -N all -c "plog_merge_age=0"
+function dbLog(){
+    gs_guc set -I all -N all -c "logging_collector=on"
+    gs_guc set -I all -N all -c "log_duration=off"
+    gs_guc set -I all -N all -c "log_line_prefix='%m %u %d %r %p %S'"
+    gs_guc set -I all -N all -c "log_checkpoints=on"
+}
+
 
 ##性能统计相关参数
-gs_guc set -I all -N all -c "vacuum_cost_limit=1000"
-gs_guc set -I all -N all -c "autovacuum_max_workers=10"
-gs_guc set -I all -N all -c "autovacuum_naptime=20s"
-gs_guc set -I all -N all -c "autovacuum_vacuum_cost_delay=10"
-gs_guc set -I all -N all -c "autovacuum_vacuum_scale_factor=0.05"
-gs_guc set -I all -N all -c "autovacuum_analyze_scale_factor=0.02"
-gs_guc set -I all -N all -c "autovacuum_vacuum_threshold=200"
-gs_guc set -I all -N all -c "autovacuum_analyze_threshold=200"
-gs_guc set -I all -N all -c "autovacuum_io_limits=104857600"
-gs_guc set -I all -N all -c "instr_unique_sql_count=200000"
-gs_guc set -I all -N all -c "enable_save_datachanged_timestamp=off"
-gs_guc set -I all -N all -c "track_sql_count=off"
-gs_guc set -I all -N all -c "enable_instr_rt_percentile=off"
-gs_guc set -I all -N all -c "enable_instance_metric_persistent=off"
-gs_guc set -I all -N all -c "enable_logical_io_statistics=off"
-gs_guc set -I all -N all -c "enable_user_metric_persistent=off"
-gs_guc set -I all -N all -c "enable_mergejoin=on"
-gs_guc set -I all -N all -c "enable_nestloop=on"
-gs_guc set -I all -N all -c "enable_pbe_optimization=off"
-gs_guc set -I all -N all -c "enable_resource_track=on"
-gs_guc set -I all -N all -c "enable_wdr_snapshot=on"
-gs_guc set -I all -N all -c "log_min_duration_statement=200"
+function perfStats(){
+    gs_guc set -I all -N all -c "vacuum_cost_limit=1000"
+    gs_guc set -I all -N all -c "autovacuum_max_workers=10"
+    gs_guc set -I all -N all -c "autovacuum_naptime=20s"
+    gs_guc set -I all -N all -c "autovacuum_vacuum_cost_delay=10"
+    gs_guc set -I all -N all -c "autovacuum_vacuum_scale_factor=0.05"
+    gs_guc set -I all -N all -c "autovacuum_analyze_scale_factor=0.02"
+    gs_guc set -I all -N all -c "autovacuum_vacuum_threshold=200"
+    gs_guc set -I all -N all -c "autovacuum_analyze_threshold=200"
+    gs_guc set -I all -N all -c "autovacuum_io_limits=104857600"
+    gs_guc set -I all -N all -c "instr_unique_sql_count=200000"
+    gs_guc set -I all -N all -c "enable_save_datachanged_timestamp=off"
+    gs_guc set -I all -N all -c "track_sql_count=off"
+    gs_guc set -I all -N all -c "enable_instr_rt_percentile=off"
+    gs_guc set -I all -N all -c "enable_instance_metric_persistent=off"
+    gs_guc set -I all -N all -c "enable_logical_io_statistics=off"
+    gs_guc set -I all -N all -c "enable_user_metric_persistent=off"
+    gs_guc set -I all -N all -c "enable_mergejoin=on"
+    gs_guc set -I all -N all -c "enable_nestloop=on"
+    gs_guc set -I all -N all -c "enable_wdr_snapshot=on"
+    gs_guc set -I all -N all -c "log_min_duration_statement=200"
+    gs_guc set -I all -N all -c "track_activity_query_size=2048"
+}
 
-##客户端白名单
-gs_guc set -I all -N all -h "host     all      all  0.0.0.0/0    md5"
 
 ##其他参数
-gs_guc set -I all -N all -c "checkpoint_segments=1024"
-gs_guc set -I all -N all -c "checkpoint_completion_target=0.8"
-gs_guc set -I all -N all -c "pagewriter_sleep=200"
-
-gs_guc set -I all -N all -c "enable_alarm=off"
-gs_guc set -I all -N all -c "enable_codegen=off"
-gs_guc set -I all -N all -c "audit_enabled=off"
-
-gs_guc set -I all -N all -c "lc_messages='en_US.UTF-8'"
-gs_guc set -I all -N all -c "lc_monetary='en_US.UTF-8'"
-gs_guc set -I all -N all -c "lc_numeric='en_US.UTF-8'"
-gs_guc set -I all -N all -c "lc_time='en_US.UTF-8'"
-
-gs_guc set -I all -N all -c "update_lockwait_timeout=1min"
-gs_guc set -I all -N all -c "lockwait_timeout=1min"
-
-gs_guc set -I all -N all -c "max_files_per_process=100000"
-gs_guc set -I all -N all -c "behavior_compat_options='display_leading_zero'"
-gs_guc set -I all -N all -c "enable_thread_pool=off"
-gs_guc set -I all -N all -c "gs_clean_timeout=0"
-gs_guc set -I all -N all -c "track_activity_query_size=2048"
+function otherKeyParams(){
+    gs_guc set -I all -N all -c "cstore_buffers=16MB"
+    gs_guc set -I all -N all -c "local_syscache_threshold=32MB"
+    gs_guc set -I all -N all -c "standby_shared_buffers_fraction=1"
+    gs_guc set -I all -N all -c "checkpoint_segments=1024"
+    gs_guc set -I all -N all -c "checkpoint_completion_target=0.8"
+    gs_guc set -I all -N all -c "max_files_per_process=100000"
+    gs_guc set -I all -N all -c "behavior_compat_options='display_leading_zero'"
+    gs_guc set -I all -N all -c "lc_messages='en_US.UTF-8'"
+    gs_guc set -I all -N all -c "lc_monetary='en_US.UTF-8'"
+    gs_guc set -I all -N all -c "lc_numeric='en_US.UTF-8'"
+    gs_guc set -I all -N all -c "lc_time='en_US.UTF-8'"
+}
+
+##客户端白名单
+function setHba(){
+    gs_guc set -I all -N all -h "host     all      all  0.0.0.0/0    md5"
+}
+
+memory=`free -g|awk '{print $2}' |sed -n 2p`
+if [[ $memory -le 4 ]]
+then
+    echo "Defined values of specify parameters or use the default parameters"
+else
+    if [[ $memory -gt 4 ]] && [[ $memory -le 8 ]] 
+    then
+        gs_guc set -I all -N all -c "max_process_memory=$((memory*6/10))GB"
+        gs_guc set -I all -N all -c "shared_buffers=$((memory*2/10))GB"
+        gs_guc set -I all -N all -c "max_connections=500"
+        gs_guc set -I all -N all -c "work_mem=16MB"
+        gs_guc set -I all -N all -c "maintenance_work_mem=512MB"
+        gs_guc set -I all -N all -c "wal_buffers=128MB"
+        gs_guc set -I all -N all -c "max_prepared_transactions=500"
+    elif [[ $memory -gt 8 ]] && [[ $memory -le 64 ]] 
+    then
+        gs_guc set -I all -N all -c "max_process_memory=$((memory*7/10))GB"
+        gs_guc set -I all -N all -c "shared_buffers=$((memory*2/10))GB"
+        gs_guc set -I all -N all -c "max_connections=1000"
+        gs_guc set -I all -N all -c "work_mem=64MB"
+        gs_guc set -I all -N all -c "maintenance_work_mem=1GB"
+        gs_guc set -I all -N all -c "wal_buffers=512MB"
+        gs_guc set -I all -N all -c "max_prepared_transactions=1000"
+    else
+        gs_guc set -I all -N all -c "max_process_memory=$((memory*8/10))GB"
+        gs_guc set -I all -N all -c "shared_buffers=$((memory*3/10))GB"
+        gs_guc set -I all -N all -c "max_connections=3000"
+        gs_guc set -I all -N all -c "work_mem=32MB"
+        gs_guc set -I all -N all -c "maintenance_work_mem=2GB"
+        gs_guc set -I all -N all -c "wal_buffers=1GB"
+        gs_guc set -I all -N all -c "max_prepared_transactions=3000"
+    fi
+    WAL
+    replicationAndSlots
+    dbLog
+    perfStats
+    otherKeyParams
+fi
+
+SecureAccess
+setHba
 ```
 
 重启数据库，使参数生效