How to fix the Oracle error CLSR-01002: Unable to process instance startup?

In this post, you’ll learn more about the Oracle ErrorCLSR-01002: Unable to process instance startup with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

CLSR-01002: Unable to process instance startup

Reason for the Error CLSR-01002: Unable to process instance startup

ORACLE_HOME environment variable not set.

How to fix the Error CLSR-01002: Unable to process instance startup ?

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

Make sure that the ORACLE_HOME environment variable has been properly set and exported.