title: ORA-01555: snapshot too old: rollback segment number with name "" too small
body: <p>ORA-01555: snapshot too old: rollback segment number  with name "" too small</p>
  
  <p>When I calling procedure after that I am writing commit.</p>
  
  <p>Actually, I want to copy the data from one table to a temporary table.
  but data is not inserting and giving ORA-01555: snapshot too old: rollback segment number with name "" too small Error.</p>
  
  <p>please give me a solution.</p>