diff --git a/core/src/main/java/com/alibaba/druid/sql/dialect/oracle/visitor/OracleOutputVisitor.java b/core/src/main/java/com/alibaba/druid/sql/dialect/oracle/visitor/OracleOutputVisitor.java
index 73ffaab411..5eec8d76ad 100644
--- a/core/src/main/java/com/alibaba/druid/sql/dialect/oracle/visitor/OracleOutputVisitor.java
+++ b/core/src/main/java/com/alibaba/druid/sql/dialect/oracle/visitor/OracleOutputVisitor.java
@@ -2812,17 +2812,10 @@ public boolean visit(SQLExprTableSource x) {
         String alias = x.getAlias();
         List<SQLName> columns = x.getColumnsDirect();
         if (alias != null) {
-            SQLObject parent = x.getParent();
-            if (parent instanceof SQLCreateIndexStatement
-                    || parent instanceof SQLMergeStatement
-                    || parent instanceof SQLDeleteStatement) {
-                print(' ');
-                print0(alias);
-            } else {
-                print(' ');
-                print0(ucase ? " AS " : " as ");
-                print0(alias);
-            }
+            // In Oracle, table aliases should not use AS keyword
+            // AS keyword is only used for column aliases
+            print(' ');
+            print0(alias);
         }
 
         if (columns != null && columns.size() > 0) {
diff --git a/core/src/test/java/com/alibaba/druid/bvt/sql/oracle/OracleFormatTest.java b/core/src/test/java/com/alibaba/druid/bvt/sql/oracle/OracleFormatTest.java
index 244ef283c7..384293a73f 100644
--- a/core/src/test/java/com/alibaba/druid/bvt/sql/oracle/OracleFormatTest.java
+++ b/core/src/test/java/com/alibaba/druid/bvt/sql/oracle/OracleFormatTest.java
@@ -15,6 +15,7 @@
  */
 package com.alibaba.druid.bvt.sql.oracle;
 
+import com.alibaba.druid.DbType;
 import com.alibaba.druid.sql.SQLUtils;
 import junit.framework.TestCase;
 
@@ -23,4 +24,38 @@ public void test_formatOracle() {
         String sql = SQLUtils.formatOracle("select substr('123''''a''''bc',0,3) FROM dual");
         System.out.println(sql);
     }
+    
+    public void test_format_tableAlias_without_as() {
+        String sql = "select * from AB01 a where a.AAB999 = '430521463000'";
+        String formattedSql = SQLUtils.format(sql, DbType.oracle);
+        
+        assertFalse("Table alias should not use AS keyword in Oracle", formattedSql.contains(" AS a"));
+        assertTrue("Table alias should be present", formattedSql.contains("AB01 a"));
+        
+        System.out.println("Original SQL: " + sql);
+        System.out.println("Formatted SQL: " + formattedSql);
+        
+        String sql2 = "SELECT t1.id, t2.name FROM users t1 JOIN orders t2 ON t1.id = t2.user_id";
+        String formatted2 = SQLUtils.format(sql2, DbType.oracle);
+        assertFalse("Table alias should not use AS keyword", formatted2.contains(" AS t1") || formatted2.contains(" AS t2"));
+        
+        String sql3 = "SELECT * FROM table1 t1, table2 t2 WHERE t1.id = t2.ref_id";
+        String formatted3 = SQLUtils.format(sql3, DbType.oracle);
+        assertFalse("Multiple table aliases should not use AS keyword", 
+                   formatted3.contains(" AS t1") || formatted3.contains(" AS t2"));
+        
+        System.out.println("Test sql2: " + formatted2);
+        System.out.println("Test sql3: " + formatted3);
+    }
+    
+    public void test_format_columnAlias_with_as() {
+        String sql = "SELECT name AS full_name, age FROM users u";
+        String formattedSql = SQLUtils.format(sql, DbType.oracle);
+        
+        assertTrue("Column alias should use AS keyword", formattedSql.contains(" AS "));
+
+        assertFalse("Table alias should not use AS keyword", formattedSql.contains("users AS u"));
+        
+        System.out.println("Column alias test: " + formattedSql);
+    }
 }