Oracle / PLSQL: ORA-01034 Error Message

Learn the cause and how to resolve the ORA-01034 error message in Oracle.

Description

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

• ORA-01034: Oracle not available

Cause

You tried to access Oracle, but Oracle was not started up.

Resolution

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

Option #1

This error may occur because the operating system variable pointing to the instance was not properly defined.

Option #2

This error may also have occurred because the SGA requires more space.