sqlplus login issue

[gkemner]

After installing a patch to my oracle 10g database I get the following error when trying to log into sqlplus

ORA-01034: ORACLE not available
ORA-27101: shared memory realm does not exist

Any ideas?

Thanks!

[rporzel-5]

It seems like the Database is closed.

Login as sqlplus /nolog and then as sysdba to start the database.

[rporzel-5]

The full commands would look like below

sqlplus /nolog
connect sys/change_on_install as sysdba;
Connected to an idle instance

Startup;