diff --git a/backend-node/src/database/OracleConnector.ts b/backend-node/src/database/OracleConnector.ts
index b9360570..e68346d8 100644
--- a/backend-node/src/database/OracleConnector.ts
+++ b/backend-node/src/database/OracleConnector.ts
@@ -99,23 +99,35 @@ export class OracleConnector implements DatabaseConnector {
     try {
       const startTime = Date.now();
       
+      // 쿼리 타입 확인 (DML인지 SELECT인지)
+      const isDML = /^\s*(INSERT|UPDATE|DELETE|MERGE)/i.test(query);
+      
       // Oracle XE 21c 쿼리 실행 옵션
       const options: any = {
         outFormat: (oracledb as any).OUT_FORMAT_OBJECT, // OBJECT format
         maxRows: 10000, // XE 제한 고려
-        fetchArraySize: 100
+        fetchArraySize: 100,
+        autoCommit: isDML // ✅ DML 쿼리는 자동 커밋
       };
 
+      console.log('Oracle 쿼리 실행:', {
+        query: query.substring(0, 100) + '...',
+        isDML,
+        autoCommit: options.autoCommit
+      });
+
       const result = await this.connection!.execute(query, params, options);
       const executionTime = Date.now() - startTime;
 
       console.log('Oracle 쿼리 실행 결과:', {
         query,
         rowCount: result.rows?.length || 0,
+        rowsAffected: result.rowsAffected,
         metaData: result.metaData?.length || 0,
         executionTime: `${executionTime}ms`,
         actualRows: result.rows,
-        metaDataInfo: result.metaData
+        metaDataInfo: result.metaData,
+        autoCommit: options.autoCommit
       });
 
       return {