title: Save point never created error
body: <p>I'm trying to create a savepoint in Oracle 11g. </p>
  
  <pre><code>ALTER TABLE ORDERS
  DISABLE CONSTRAINT ORDERS_C_ID_FK;
  
  DELETE FROM CUSTOMER;
  
  SELECT * FROM CUSTOMER;
  
  ROLLBACK;
  
  SELECT * FROM CUSTOMER;
  
  SAVEPOINT SAVEPOINT1;
  
  ALTER TABLE ORDERS
  DISABLE CONSTRAINT ORDERS_OS_ID_FK;
  
  ALTER TABLE ORDER_LINE
  DISABLE CONSTRAINT ORDER_LINE_O_ID_FK;
  
  TRUNCATE TABLE CUSTOMER;
  TRUNCATE TABLE ORDER_SOURCE;
  TRUNCATE TABLE ORDERS;
  DELETE FROM ORDERS;
  
  ROLLBACK TO SAVEPOINT1;
  </code></pre>
  
  <p>But I keep getting this error from SQL Developer</p>
  
  <blockquote>
    <p>ROLLBACK TO SAVEPOINT1 Error report: SQL Error: ORA-01086: savepoint
    'SAVEPOINT1' never established in this session or is invalid
    01086. 00000 -  "savepoint '%s' never established"
    *Cause:    Trying to roll back to a save point that was never established.
    *Action:</p>
  </blockquote>