title: flashback recovery in oracle 10g
body: <p>i m using oracle 10g and i want to enable flashback database
  i hava manually run all the command like</p>
  
  <pre><code>SQL&gt; shutdown immediate;
  SQL&gt; startup mount;
  SQL&gt; alter database archivelog;
  
  SQL&gt; ALTER SYSTEM SET DB_FLASHBACK_RETENTION_TARGET=4320;
  
  SQL&gt; ALTER SYSTEM SET DB_RECOVERY_FILE_DEST_SIZE=536870912;
  
  SQL&gt; ALTER SYSTEM SET DB_RECOVERY_FILE_DEST='/C/TEMP1';
  SQL&gt; ALTER DATABASE OPEN;
  SQL&gt;ALTER DATABASE FLASHBACK ON;
  </code></pre>
  
  <p>it shows the error like</p>
  
  <pre><code>ORA-00439: feature not enabled : Flashback Database
  </code></pre>
  
  <p>plz anyone can help me to setup the flashback database?</p>