Core Issue
The user receives an ORA 01034: ORACLE not available message when starting an Oracle instance.
Resolution
To resolve this issue, perform these steps:
- Log in as Oracle Administrator.
- Make sure that ORACLE_HOME, ORACLE_SID, and PATH are set.
- Log into the server manager by issuing the $svrmgrl SVRMGR> command.
- Issue the SVRMGR>connect internal command.
- Issue the SVRMGR>startup ORACLE command to start the Oracle instance.