Cause
This error can occur when undoing a top-level Btree operation during a transaction abort. The error indicates that it is not possible to undo the operation given the current state of the Btree.
This is a fatal error that results in termination of the database server to invoke restart recovery. If restart recovery encounters the same problem, a 3113 - Database recovery not possible - fatal error encountered error occurs.
Action
See error 3113 - Database recovery not possible - fatal error encountered, for details about possible causes and the best course of action.