Explanation:
Your transaction was implicitly cancelled and rolled back by an implicit <ROLLBACK statement>. The following reasons are possible:
Deadlock situation: This is a situation in which two or more users hold locks and request further locks that are held by the other users. In the simplest case of two users, one user holds one lock at least and requests another lock. But this lock is held by another user who is himself waiting for the lock held by the first user. This situation can only be resolved if one of the users releases the lock already obtained.
User Action:
In some cases, the error message contains a more detailed description of the error.
In both cases, the lock requests must be checked and modified, if necessary. Repeat the last transaction.
It may also be necessary to check and modify the value of the LOCK_TIMEOUT installation parameter.