diff --git a/core/core-backend/src/main/java/io/dataease/datasource/provider/CalciteProvider.java b/core/core-backend/src/main/java/io/dataease/datasource/provider/CalciteProvider.java
index abf64233be..0edf609ddd 100644
--- a/core/core-backend/src/main/java/io/dataease/datasource/provider/CalciteProvider.java
+++ b/core/core-backend/src/main/java/io/dataease/datasource/provider/CalciteProvider.java
@@ -607,7 +607,7 @@ public class CalciteProvider extends Provider {
         if (DatasourceConfiguration.DatasourceType.valueOf(value.getType()) == DatasourceConfiguration.DatasourceType.oracle) {
             statement = getStatement(con, datasourceConfiguration.getQueryTimeout());
             statement.executeUpdate("ALTER SESSION SET CURRENT_SCHEMA = " + datasourceConfiguration.getSchema());
-
+            statement.executeUpdate("ALTER SESSION SET NLS_TIMESTAMP_FORMAT = 'YYYY-MM-DD HH24:MI:SS'");
             //调整字符集
             if (StringUtils.isNotEmpty(datasourceConfiguration.getCharset()) && StringUtils.isNotEmpty(datasourceConfiguration.getTargetCharset())) {
                 datasourceRequest.setQuery(new String(datasourceRequest.getQuery().getBytes(datasourceConfiguration.getTargetCharset()), datasourceConfiguration.getCharset()));