How to fix the Oracle error ORA-15563: workload replay client cannot spawn new threads?

In this post, you’ll learn more about the Oracle ErrorORA-15563: workload replay client cannot spawn new threads with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-15563: workload replay client cannot spawn new threads

Reason for the Error ORA-15563: workload replay client cannot spawn new threads

The Workload Replay Client does not have enough resource (CPU or memory) to spawn new threads.

How to fix the Error ORA-15563: workload replay client cannot spawn new threads ?

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

Restart the workload replay after allocating more resource (CPU and memory) to the Workload Replay Client or use more hosts as replay clients to drive the workload.