diff --git a/dbswitch-common/pom.xml b/dbswitch-common/pom.xml
index f0ceb467..a970a7fe 100644
--- a/dbswitch-common/pom.xml
+++ b/dbswitch-common/pom.xml
@@ -5,7 +5,7 @@
 	<parent>
 		<groupId>com.gitee</groupId>
 		<artifactId>dbswitch</artifactId>
-		<version>1.5.1</version>
+		<version>1.5.2</version>
 	</parent>
 
 	<artifactId>dbswitch-common</artifactId>
diff --git a/dbswitch-core/pom.xml b/dbswitch-core/pom.xml
index 02deaedb..7f238b88 100644
--- a/dbswitch-core/pom.xml
+++ b/dbswitch-core/pom.xml
@@ -5,7 +5,7 @@
 	<parent>
 		<groupId>com.gitee</groupId>
 		<artifactId>dbswitch</artifactId>
-		<version>1.5.1</version>
+		<version>1.5.2</version>
 	</parent>
 
 	<artifactId>dbswitch-core</artifactId>
diff --git a/dbswitch-core/src/main/java/com/gitee/dbswitch/core/database/AbstractDatabase.java b/dbswitch-core/src/main/java/com/gitee/dbswitch/core/database/AbstractDatabase.java
index 89cd82d9..2ebdd54d 100644
--- a/dbswitch-core/src/main/java/com/gitee/dbswitch/core/database/AbstractDatabase.java
+++ b/dbswitch-core/src/main/java/com/gitee/dbswitch/core/database/AbstractDatabase.java
@@ -18,6 +18,7 @@ import java.util.HashSet;
 import java.sql.Connection;
 import java.sql.DatabaseMetaData;
 import java.sql.DriverManager;
+import java.sql.Statement;
 import java.sql.PreparedStatement;
 import java.sql.ResultSet;
 import java.sql.ResultSetMetaData;
@@ -217,8 +218,8 @@ public abstract class AbstractDatabase implements IDatabaseInterface {
 	@Override
 	public void testQuerySQL(String sql) {
 		String wrapperSql = this.getTestQuerySQL(sql);
-		try(PreparedStatement pstmt = this.connection.prepareStatement(wrapperSql);) {
-			pstmt.executeQuery();
+		try (Statement statement = this.connection.createStatement();) {
+			statement.execute(wrapperSql);
 		} catch (SQLException e) {
 			throw new RuntimeException(e);
 		}
diff --git a/dbswitch-core/src/main/java/com/gitee/dbswitch/core/database/impl/DatabaseGreenplumImpl.java b/dbswitch-core/src/main/java/com/gitee/dbswitch/core/database/impl/DatabaseGreenplumImpl.java
index a436238d..10995831 100644
--- a/dbswitch-core/src/main/java/com/gitee/dbswitch/core/database/impl/DatabaseGreenplumImpl.java
+++ b/dbswitch-core/src/main/java/com/gitee/dbswitch/core/database/impl/DatabaseGreenplumImpl.java
@@ -112,7 +112,11 @@ public class DatabaseGreenplumImpl extends AbstractDatabase implements IDatabase
 			if (length < 1 || length >= AbstractDatabase.CLOB_LENGTH) {
 				retval += "TEXT";
 			} else {
-				retval += "VARCHAR(" + length + ")";
+				if (null != pks && pks.contains(fieldname)) {
+					retval += "VARCHAR(" + length + ")";
+				} else {
+					retval += "TEXT";
+				}
 			}
 			break;
 		case ColumnMetaData.TYPE_BINARY:
diff --git a/dbswitch-core/src/main/java/com/gitee/dbswitch/core/database/impl/DatabasePostgresImpl.java b/dbswitch-core/src/main/java/com/gitee/dbswitch/core/database/impl/DatabasePostgresImpl.java
index 891a405d..6582d7f8 100644
--- a/dbswitch-core/src/main/java/com/gitee/dbswitch/core/database/impl/DatabasePostgresImpl.java
+++ b/dbswitch-core/src/main/java/com/gitee/dbswitch/core/database/impl/DatabasePostgresImpl.java
@@ -112,7 +112,11 @@ public class DatabasePostgresImpl extends AbstractDatabase implements IDatabaseI
 			if (length < 1 || length >= AbstractDatabase.CLOB_LENGTH) {
 				retval += "TEXT";
 			} else {
-				retval += "VARCHAR(" + length + ")";
+				if (null != pks && pks.contains(fieldname)) {
+					retval += "VARCHAR(" + length + ")";
+				} else {
+					retval += "TEXT";
+				}
 			}
 			break;
 		case ColumnMetaData.TYPE_BINARY:
diff --git a/dbswitch-data/pom.xml b/dbswitch-data/pom.xml
index 36dd9348..d15d4af5 100644
--- a/dbswitch-data/pom.xml
+++ b/dbswitch-data/pom.xml
@@ -5,7 +5,7 @@
 	<parent>
 		<groupId>com.gitee</groupId>
 		<artifactId>dbswitch</artifactId>
-		<version>1.5.1</version>
+		<version>1.5.2</version>
 	</parent>
 
 	<artifactId>dbswitch-data</artifactId>
diff --git a/dbswitch-dbchange/pom.xml b/dbswitch-dbchange/pom.xml
index 2c4bc265..fba42892 100644
--- a/dbswitch-dbchange/pom.xml
+++ b/dbswitch-dbchange/pom.xml
@@ -5,7 +5,7 @@
 	<parent>
 		<groupId>com.gitee</groupId>
 		<artifactId>dbswitch</artifactId>
-		<version>1.5.1</version>
+		<version>1.5.2</version>
 	</parent>
 
 	<artifactId>dbswitch-dbchange</artifactId>
diff --git a/dbswitch-dbcommon/pom.xml b/dbswitch-dbcommon/pom.xml
index 3936a1da..23759be9 100644
--- a/dbswitch-dbcommon/pom.xml
+++ b/dbswitch-dbcommon/pom.xml
@@ -3,7 +3,7 @@
   <parent>
     <groupId>com.gitee</groupId>
     <artifactId>dbswitch</artifactId>
-    <version>1.5.1</version>
+    <version>1.5.2</version>
   </parent>
   
   <artifactId>dbswitch-dbcommon</artifactId>
diff --git a/dbswitch-dbsynch/pom.xml b/dbswitch-dbsynch/pom.xml
index 66ecd114..a3b8f747 100644
--- a/dbswitch-dbsynch/pom.xml
+++ b/dbswitch-dbsynch/pom.xml
@@ -3,7 +3,7 @@
   <parent>
     <groupId>com.gitee</groupId>
     <artifactId>dbswitch</artifactId>
-    <version>1.5.1</version>
+    <version>1.5.2</version>
   </parent>
   
   <artifactId>dbswitch-dbsynch</artifactId>
diff --git a/dbswitch-dbwriter/pom.xml b/dbswitch-dbwriter/pom.xml
index 5b65d9ed..9beee526 100644
--- a/dbswitch-dbwriter/pom.xml
+++ b/dbswitch-dbwriter/pom.xml
@@ -5,7 +5,7 @@
 	<parent>
 		<groupId>com.gitee</groupId>
 		<artifactId>dbswitch</artifactId>
-		<version>1.5.1</version>
+		<version>1.5.2</version>
 	</parent>
 
 	<artifactId>dbswitch-dbwriter</artifactId>
diff --git a/dbswitch-pgwriter/pom.xml b/dbswitch-pgwriter/pom.xml
index 00f99a31..093e225c 100644
--- a/dbswitch-pgwriter/pom.xml
+++ b/dbswitch-pgwriter/pom.xml
@@ -5,7 +5,7 @@
 	<parent>
 		<groupId>com.gitee</groupId>
 		<artifactId>dbswitch</artifactId>
-		<version>1.5.1</version>
+		<version>1.5.2</version>
 	</parent>
 	
 	<artifactId>dbswitch-pgwriter</artifactId>
diff --git a/dbswitch-sql/pom.xml b/dbswitch-sql/pom.xml
index 9103616c..625aa4ef 100644
--- a/dbswitch-sql/pom.xml
+++ b/dbswitch-sql/pom.xml
@@ -5,7 +5,7 @@
 	<parent>
 		<groupId>com.gitee</groupId>
 		<artifactId>dbswitch</artifactId>
-		<version>1.5.1</version>
+		<version>1.5.2</version>
 	</parent>
 
 	<artifactId>dbswitch-sql</artifactId>
diff --git a/dbswitch-webapi/pom.xml b/dbswitch-webapi/pom.xml
index 77d2c66b..9138d34a 100644
--- a/dbswitch-webapi/pom.xml
+++ b/dbswitch-webapi/pom.xml
@@ -5,7 +5,7 @@
 	<parent>
 		<groupId>com.gitee</groupId>
 		<artifactId>dbswitch</artifactId>
-		<version>1.5.1</version>
+		<version>1.5.2</version>
 	</parent>
 
 	<artifactId>dbswitch-webapi</artifactId>
diff --git a/package-tool/pom.xml b/package-tool/pom.xml
index 85cb8815..930b4f8d 100644
--- a/package-tool/pom.xml
+++ b/package-tool/pom.xml
@@ -5,7 +5,7 @@
 	<parent>
 		<groupId>com.gitee</groupId>
 		<artifactId>dbswitch</artifactId>
-		<version>1.5.1</version>
+		<version>1.5.2</version>
 	</parent>
 
 	<artifactId>package-tool</artifactId>
diff --git a/package-tool/src/main/assembly/bin/datasync.sh b/package-tool/src/main/assembly/bin/datasync.sh
index 3d370ff0..46bb506e 100644
--- a/package-tool/src/main/assembly/bin/datasync.sh
+++ b/package-tool/src/main/assembly/bin/datasync.sh
@@ -21,7 +21,7 @@ APP_LIB_PATH=$APP_HOME/lib
 APP_CONF_PATH=$APP_HOME/conf
 
 # JVMFLAGS JVM参数可以在这里设置
-JVMFLAGS="-Xms1024m -Xmx1024m -Xmn512m -XX:+DisableExplicitGC -XX:+PrintGCDetails -XX:+PrintGCTimeStamps -Dfile.encoding=UTF-8 -Doracle.jdbc.J2EE13Compliant=true"
+JVMFLAGS="-Xms2g -Xmx2g -Xmn1g -XX:+DisableExplicitGC -XX:+PrintGCDetails -XX:+PrintGCTimeStamps -Dfile.encoding=UTF-8 -Doracle.jdbc.J2EE13Compliant=true"
 
 if [ "$JAVA_HOME" != "" ]; then
   JAVA="$JAVA_HOME/bin/java"
diff --git a/pom.xml b/pom.xml
index d0ebc500..2d0a1e3e 100644
--- a/pom.xml
+++ b/pom.xml
@@ -21,7 +21,7 @@
 
 	<groupId>com.gitee</groupId>
 	<artifactId>dbswitch</artifactId>
-	<version>1.5.1</version>
+	<version>1.5.2</version>
 	<packaging>pom</packaging>
 	<name>dbswitch</name>
 	<description>database switch project</description>
diff --git a/version.cmd b/version.cmd
index a3325f93..3271f5ab 100644
--- a/version.cmd
+++ b/version.cmd
@@ -1,6 +1,6 @@
 @echo off
 
-set APP_VERSION=1.5.1
+set APP_VERSION=1.5.2
 
 echo "Clean Project ..."
 call mvn clean -f pom.xml