ORA-12838: cannot read/modify an object after

admin

ORA-12838: cannotread/modify an object after modifying it in parallel
Cause: Within the same transaction, an attempt was made toadd read or
modification statements on a table after it had been modified in parallel orwith
direct load. This is not permitted.
Action: Rewritethe transaction, or break it up into two transactions: one
containing the initial modification and the second containing the parallel
modification operation.