diff --git a/test/e2e/sql/src/test/resources/env/scenario/passthrough/proxy/conf/opengauss/database-passthrough.yaml b/test/e2e/sql/src/test/resources/env/scenario/passthrough/proxy/conf/opengauss/database-passthrough.yaml
index 874d414a10c2e..93ff0e2838568 100644
--- a/test/e2e/sql/src/test/resources/env/scenario/passthrough/proxy/conf/opengauss/database-passthrough.yaml
+++ b/test/e2e/sql/src/test/resources/env/scenario/passthrough/proxy/conf/opengauss/database-passthrough.yaml
@@ -19,7 +19,7 @@ databaseName: passthrough
 
 dataSources:
   passthrough:
-    url: jdbc:opengauss://opengauss.passthrough.host:5432/passthrough
+    url: jdbc:opengauss://opengauss.passthrough.host:5432/passthrough?stringtype=unspecified
     username: test_user
     password: Test@123
     connectionTimeoutMilliseconds: 30000