improved sql parser.

src/main/java/com/alibaba/druid/sql/dialect/oracle/ast/OracleDataTypeIntervalDay.java

@@ -58,4 +58,17 @@ public class OracleDataTypeIntervalDay extends SQLDataTypeImpl implements Oracle
         return fractionalSeconds;
     }
 
+    public OracleDataTypeIntervalDay clone() {
+        OracleDataTypeIntervalDay x = new OracleDataTypeIntervalDay();
+
+        super.cloneTo(x);
+
+        for (SQLExpr arg : fractionalSeconds) {
+            arg.setParent(x);
+            x.fractionalSeconds.add(arg);
+        }
+
+        return x;
+    }
+
 }

src/main/java/com/alibaba/druid/sql/dialect/oracle/ast/OracleDataTypeIntervalYear.java

@@ -16,6 +16,7 @@
 package com.alibaba.druid.sql.dialect.oracle.ast;
 
 import com.alibaba.druid.sql.ast.SQLDataTypeImpl;
+import com.alibaba.druid.sql.ast.SQLExpr;
 import com.alibaba.druid.sql.dialect.oracle.visitor.OracleASTVisitor;
 import com.alibaba.druid.sql.visitor.SQLASTVisitor;
 
@@ -38,4 +39,11 @@ public class OracleDataTypeIntervalYear extends SQLDataTypeImpl implements Oracl
         visitor.endVisit(this);
     }
 
+    public OracleDataTypeIntervalYear clone() {
+        OracleDataTypeIntervalYear x = new OracleDataTypeIntervalYear();
+
+        super.cloneTo(x);
+
+        return x;
+    }
 }

src/main/java/com/alibaba/druid/sql/dialect/oracle/parser/OracleCreateTableParser.java

@@ -91,6 +91,10 @@ public class OracleCreateTableParser extends SQLCreateTableParser {
                 lexer.nextToken();
                 stmt.setParallel(false);
                 continue;
+            } else if (identifierEquals("PARALLEL")) {
+                lexer.nextToken();
+                stmt.setParallel(true);
+                continue;
             } else if (lexer.token() == Token.CACHE) {
                 lexer.nextToken();
                 stmt.setCache(Boolean.TRUE);

src/main/java/com/alibaba/druid/sql/dialect/oracle/visitor/OracleOutputVisitor.java

@@ -2053,7 +2053,7 @@ public class OracleOutputVisitor extends SQLASTOutputVisitor implements OracleAS
             if (enable.booleanValue()) {
                 print0(ucase ? " ENABLE" : " enable");
             } else {
-                print0(ucase ? " DIABLE" : " diable");
+                print0(ucase ? " DISABLE" : " disable");
             }
         }