diff --git a/src/main/java/com/alibaba/druid/sql/dialect/oracle/parser/OracleDeleteParser.java b/src/main/java/com/alibaba/druid/sql/dialect/oracle/parser/OracleDeleteParser.java
index 6c81bcbd76..ca8e59591a 100644
--- a/src/main/java/com/alibaba/druid/sql/dialect/oracle/parser/OracleDeleteParser.java
+++ b/src/main/java/com/alibaba/druid/sql/dialect/oracle/parser/OracleDeleteParser.java
@@ -16,7 +16,6 @@
 package com.alibaba.druid.sql.dialect.oracle.parser;
 
 import com.alibaba.druid.sql.ast.SQLName;
-import com.alibaba.druid.sql.ast.statement.SQLTableSource;
 import com.alibaba.druid.sql.dialect.oracle.ast.stmt.OracleDeleteStatement;
 import com.alibaba.druid.sql.parser.Lexer;
 import com.alibaba.druid.sql.parser.ParserException;
diff --git a/src/main/java/com/alibaba/druid/sql/dialect/oracle/parser/OracleExprParser.java b/src/main/java/com/alibaba/druid/sql/dialect/oracle/parser/OracleExprParser.java
index 1dc20afcbf..df3fd78c62 100644
--- a/src/main/java/com/alibaba/druid/sql/dialect/oracle/parser/OracleExprParser.java
+++ b/src/main/java/com/alibaba/druid/sql/dialect/oracle/parser/OracleExprParser.java
@@ -167,6 +167,7 @@ public class OracleExprParser extends SQLExprParser {
         return aggregateExpr;
     }
 
+    @SuppressWarnings("unused")
     private OracleIntervalType parseIntervalType() {
         String currentTokenUpperValue = lexer.stringVal();
         lexer.nextToken();