diff --git a/Src/Asp.NetCore2/SqlSugar/Realization/Oracle/DbMaintenance/OracleDbMaintenance.cs b/Src/Asp.NetCore2/SqlSugar/Realization/Oracle/DbMaintenance/OracleDbMaintenance.cs
index f55fa4e50..a4a7a859b 100644
--- a/Src/Asp.NetCore2/SqlSugar/Realization/Oracle/DbMaintenance/OracleDbMaintenance.cs
+++ b/Src/Asp.NetCore2/SqlSugar/Realization/Oracle/DbMaintenance/OracleDbMaintenance.cs
@@ -58,7 +58,7 @@ namespace SqlSugar
         {
             get
             {
-                return "select count(1) from user_ind_columns where index_name=('{0}')";
+                return "select count(1) from user_ind_columns where upper(index_name)=upper('{0}')";
             }
         }
         protected override string CreateIndexSql