Learn the cause and how to get to the bottom of the ORA-01034 error message in Oracle.
When you come across an ORA-01034 error, the following error message will appear:
ORA-01034: Oracle not available
You tried to get entry to Oracle, however Oracle was once not started up.
The option(s) to resolve this Oracle error are:
This error may happen due to the fact the running system variable pointing to the instance was once no longer correct defined.
This error might also also have took place because the SGA requires greater space.