diff --git a/java/connector-node/risingwave-sink-jdbc/src/main/java/com/risingwave/connector/JDBCSink.java b/java/connector-node/risingwave-sink-jdbc/src/main/java/com/risingwave/connector/JDBCSink.java
index 64b2b7602e3b9..399a312758e3b 100644
--- a/java/connector-node/risingwave-sink-jdbc/src/main/java/com/risingwave/connector/JDBCSink.java
+++ b/java/connector-node/risingwave-sink-jdbc/src/main/java/com/risingwave/connector/JDBCSink.java
@@ -89,6 +89,8 @@ public JDBCSink(JDBCSinkConfig config, TableSchema tableSchema) {
                     "JDBC connection: autoCommit = {}, trxn = {}",
                     conn.getAutoCommit(),
                     conn.getTransactionIsolation());
+            // Commit the `getTransactionIsolation`
+            conn.commit();
 
             jdbcStatements = new JdbcStatements(conn);
         } catch (SQLException e) {