This message appears when a user attempts to commit database changes that conflict with changes committed by one or more other concurrent user connections to the same database. There will be an implicit ROLLBACK of any transactional changes made by the user receiving this error.

For example, say that

User 1

and

User 2

connect to a database at the same time. If

User 1

inserts data into

Table A

, and then

User 2

drops

Table A

and commits the change,

User 1

will receive this transaction error when committing the data insert because

Table A

no longer exists. Any changes made by

User 1

in the transaction will be rolled back.