How to fix the Oracle error ORA-12839: cannot modify an object in parallel after modifying it?

In this post, you’ll learn more about the Oracle ErrorORA-12839: cannot modify an object in parallel after modifying it with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-12839: cannot modify an object in parallel after modifying it

Reason for the Error ORA-12839: cannot modify an object in parallel after modifying it

Within the same transaction, an attempt was made to perform parallel modification operations on a table after it had been modified. This is not permitted.

How to fix the Error ORA-12839: cannot modify an object in parallel after modifying it ?

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

Rewrite the transaction or break it up into two transactions: one containing the parallel modification and the second containing the initial modification operation.