diff --git a/infra/database/type/oracle/src/main/java/org/apache/shardingsphere/infra/database/oracle/metadata/database/OracleDatabaseMetaData.java b/infra/database/type/oracle/src/main/java/org/apache/shardingsphere/infra/database/oracle/metadata/database/OracleDatabaseMetaData.java
index c31ad4c07254e..23a777bdb5e69 100644
--- a/infra/database/type/oracle/src/main/java/org/apache/shardingsphere/infra/database/oracle/metadata/database/OracleDatabaseMetaData.java
+++ b/infra/database/type/oracle/src/main/java/org/apache/shardingsphere/infra/database/oracle/metadata/database/OracleDatabaseMetaData.java
@@ -14,6 +14,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+
 package org.apache.shardingsphere.infra.database.oracle.metadata.database;
 
 import org.apache.shardingsphere.infra.database.core.metadata.database.DialectDatabaseMetaData;
@@ -25,7 +26,6 @@
 import java.sql.Types;
 import java.util.Arrays;
 import java.util.HashMap;
-import java.util.List;
 import java.util.Map;
 import java.util.Optional;
 import java.util.Set;
@@ -35,13 +35,14 @@
  * Database meta data of Oracle.
  */
 public final class OracleDatabaseMetaData implements DialectDatabaseMetaData {
-    private static final Set<String> RESERVED_KEYWORDS = new HashSet<>(Arrays.asList("ACCESS", "ADD", "ALL", "ALTER", "AND", "ANY", "ARRAYLEN", "AS", "ASC", "AUDIT", "BETWEEN", "BY", "CHAR", "CHECK", "CLUSTER",
-            "COLUMN", "COMMENT", "COMPRESS", "CONNECT", "CREATE", "CURRENT", "DATE", "DECIMAL", "DEFAULT", "DELETE", "DESC", "DISTINCT", "DROP", "ELSE", "EXCLUSIVE", "EXISTS", "FILE", "FLOAT", "FOR",
-            "FROM", "GRANT", "GROUP", "HAVING", "IDENTIFIED", "IMMEDIATE", "IN", "INCREMENT", "INDEX", "INITIAL", "INSERT", "INTEGER", "INTERSECT", "INTO", "IS", "LEVEL", "LIKE", "LOCK", "LONG",
-            "MAXEXTENTS", "MINUS", "MODE", "MODIFY", "NOAUDIT", "NOCOMPRESS", "NOT", "NOTFOUND", "NOWAIT", "NULL", "NUMBER", "OF", "OFFLINE", "ON", "ONLINE", "OPTION", "OR", "ORDER", "PCTFREE",
-            "PRIOR", "PRIVILEGES", "PUBLIC", "RAW", "RENAME", "RESOURCE", "REVOKE", "ROW", "ROWID", "ROWLABEL", "ROWNUM", "ROWS", "START", "SELECT", "SESSION", "SET", "SHARE", "SIZE", "SMALLINT",
-            "SQLBUF", "SUCCESSFUL", "SYNONYM", "SYSDATE", "TABLE", "THEN", "TO", "TRIGGER", "UID", "UNION", "UNIQUE", "UPDATE", "USER", "VALIDATE", "VALUES", "VARCHAR", "VARCHAR2", "VIEW", "WHENEVER",
-            "WHERE", "WITH"));
+    
+    private static final Set<String> RESERVED_KEYWORDS = new HashSet<>(Arrays.asList("ACCESS", "ADD", "ALL", "ALTER", "AND", "ANY", "ARRAYLEN", "AS", "ASC", "AUDIT", "BETWEEN", "BY", "CHAR", "CHECK",
+            "CLUSTER", "COLUMN", "COMMENT", "COMPRESS", "CONNECT", "CREATE", "CURRENT", "DATE", "DECIMAL", "DEFAULT", "DELETE", "DESC", "DISTINCT", "DROP", "ELSE", "EXCLUSIVE", "EXISTS", "FILE",
+            "FLOAT", "FOR", "FROM", "GRANT", "GROUP", "HAVING", "IDENTIFIED", "IMMEDIATE", "IN", "INCREMENT", "INDEX", "INITIAL", "INSERT", "INTEGER", "INTERSECT", "INTO", "IS", "LEVEL", "LIKE",
+            "LOCK", "LONG", "MAXEXTENTS", "MINUS", "MODE", "MODIFY", "NOAUDIT", "NOCOMPRESS", "NOT", "NOTFOUND", "NOWAIT", "NULL", "NUMBER", "OF", "OFFLINE", "ON", "ONLINE", "OPTION", "OR", "ORDER",
+            "PCTFREE", "PRIOR", "PRIVILEGES", "PUBLIC", "RAW", "RENAME", "RESOURCE", "REVOKE", "ROW", "ROWID", "ROWLABEL", "ROWNUM", "ROWS", "START", "SELECT", "SESSION", "SET", "SHARE", "SIZE",
+            "SMALLINT", "SQLBUF", "SUCCESSFUL", "SYNONYM", "SYSDATE", "TABLE", "THEN", "TO", "TRIGGER", "UID", "UNION", "UNIQUE", "UPDATE", "USER", "VALIDATE", "VALUES", "VARCHAR", "VARCHAR2",
+            "VIEW", "WHENEVER", "WHERE", "WITH"));
     
     @Override
     public QuoteCharacter getQuoteCharacter() {