How to resolve ORA-01034 Error Message in Oracle database

Learn the cause and how to get to the bottom of the ORA-01034 error message in Oracle.

Description

When you come across an ORA-01034 error, the following error message will appear:

ORA-01034: Oracle not available

Cause

You tried to get entry to Oracle, however Oracle was once not started up.

Resolution

The option(s) to resolve this Oracle error are:

Option #1

This error may happen due to the fact the running system variable pointing to the instance was once no longer correct defined.

Option #2

This error might also also have took place because the SGA requires greater space.