How to fix the Oracle error OCI-31111: table string cannot be hierarchically enabled?

In this post, you’ll learn more about the Oracle ErrorOCI-31111: table string cannot be hierarchically enabled with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

OCI-31111: table string cannot be hierarchically enabled

Reason for the Error OCI-31111: table string cannot be hierarchically enabled

Trigger _xdb_pitrigger already exists

How to fix the Error OCI-31111: table string cannot be hierarchically enabled ?

You can fix this error in Oracle by following the below steps

Delete all rows in the hierarchical index and then rebuild it.