diff --git a/src/main/java/org/opengauss/sqltranslator/ExecuteTranslate.java b/src/main/java/org/opengauss/sqltranslator/ExecuteTranslate.java
index 1275072c712d5d2afaea574b2af8f1b98b79d735..e124d17e5ea803fdb418fb81cfaf70f31c599d6b 100644
--- a/src/main/java/org/opengauss/sqltranslator/ExecuteTranslate.java
+++ b/src/main/java/org/opengauss/sqltranslator/ExecuteTranslate.java
@@ -7,6 +7,8 @@ import org.opengauss.sqltranslator.dialect.mysql.MySqlToOpenGaussOutputVisitor;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
+import java.io.UnsupportedEncodingException;
+import java.util.Base64;
 import java.util.List;
 
 public class ExecuteTranslate {
@@ -14,8 +16,21 @@ public class ExecuteTranslate {
     private static final Logger logger = LoggerFactory.getLogger(ExecuteTranslate.class);
 
     public static void main(String[] args) {
+        String raw_sql = "";
+        //if the encoded sql is passed in through the --base64 parameter, the sql needs to be decoded
+        if (args.length == 2 && args[0].equals("--base64")) {
+            //decode sql
+            byte[] decode = Base64.getDecoder().decode(args[1]);
+            try {
+                raw_sql = new String(decode, "utf-8");
+            } catch (UnsupportedEncodingException e) {
+                logger.error(e.getLocalizedMessage());
+            }
+        } else {
+            raw_sql = args[0];
+        }
         try {
-            System.out.println(translateMysql2openGauss(args[0], false));
+            System.out.println(translateMysql2openGauss(raw_sql, false));
         } catch (Exception e) {
             logger.error(e.getLocalizedMessage());
         }
diff --git a/src/main/java/org/opengauss/sqltranslator/dialect/mysql/MySqlToOpenGaussOutputVisitor.java b/src/main/java/org/opengauss/sqltranslator/dialect/mysql/MySqlToOpenGaussOutputVisitor.java
index 1a9743c484dc68efdb4133cd86c035cfc23128d9..a3cf4133a1a30b730db325eba76b4e1cb3f6b07d 100644
--- a/src/main/java/org/opengauss/sqltranslator/dialect/mysql/MySqlToOpenGaussOutputVisitor.java
+++ b/src/main/java/org/opengauss/sqltranslator/dialect/mysql/MySqlToOpenGaussOutputVisitor.java
@@ -450,14 +450,22 @@ public class MySqlToOpenGaussOutputVisitor extends MySqlOutputVisitor {
         boolean mysqlSpecial = false;
         if (DbType.mysql == this.dbType)
             mysqlSpecial = ("NAMES".equalsIgnoreCase(tagetString) || "CHARACTER SET".equalsIgnoreCase(tagetString)
-                    || "CHARSET".equalsIgnoreCase(tagetString) || tagetString.startsWith("@"));
+                    || "CHARSET".equalsIgnoreCase(tagetString) || "AUTOCOMMIT".equalsIgnoreCase(tagetString)
+                    || tagetString.startsWith("@"));
         if (!mysqlSpecial) {
             x.getTarget().accept(this);
             print0(" := ");
             x.getValue().accept(this);
         } else {
-            logger.error("openGauss does not support set " + tagetString.toUpperCase() + getTypeAttribute(x));
-            errHandle(x);
+            if ("AUTOCOMMIT".equalsIgnoreCase(tagetString)) {
+                print0("SET ");
+                x.getTarget().accept(this);
+                print0(" = ");
+                x.getValue().accept(this);
+            } else {
+                logger.error("openGauss does not support set " + tagetString.toUpperCase() + getTypeAttribute(x));
+                errHandle(x);
+            }
         }
         return false;
     }
@@ -3310,7 +3318,7 @@ public class MySqlToOpenGaussOutputVisitor extends MySqlOutputVisitor {
             gaussFeatureNotSupportLog("GLOBAL when it sets transaction" + getTypeAttribute(x));
         }
         if (x.getSession() != null && x.getSession().booleanValue()) {
-            printUcase("SET SESSION CHARACTERISTICS AS TRANSACTION");
+            printUcase("SESSION CHARACTERISTICS AS TRANSACTION ");
         } else
             printUcase("LOCAL TRANSACTION ");
         if (x.getIsolationLevel() != null) {