diff --git a/chat2db-server/chat2db-plugins/chat2db-oracle/src/main/java/ai/chat2db/plugin/oracle/type/OracleIndexTypeEnum.java b/chat2db-server/chat2db-plugins/chat2db-oracle/src/main/java/ai/chat2db/plugin/oracle/type/OracleIndexTypeEnum.java
index f0f183f1..3d69d221 100644
--- a/chat2db-server/chat2db-plugins/chat2db-oracle/src/main/java/ai/chat2db/plugin/oracle/type/OracleIndexTypeEnum.java
+++ b/chat2db-server/chat2db-plugins/chat2db-oracle/src/main/java/ai/chat2db/plugin/oracle/type/OracleIndexTypeEnum.java
@@ -77,7 +77,7 @@ public enum OracleIndexTypeEnum {
     }
 
     private String buildIndexName(TableIndex tableIndex) {
-        return "\"" + tableIndex.getSchemaName() + "\"" + "\"" + tableIndex.getName() + "\"";
+        return "\"" + tableIndex.getSchemaName() + "\"." + "\"" + tableIndex.getName() + "\"";
     }
 
     public String buildModifyIndex(TableIndex tableIndex) {