Connect SQL*Plus to Hung Oracle Database

When Oracle Database cannot create session, user sometime can execute SQL*Plus with normal credential. But it didn’t return the usual SQL*Plus prompt after it. When the user check the sessions, the oracle background processes are still running.

There prefered solution for this problem is login with parameter -prelim as:

sqlplus -prelim "/ as sysdba"

and then execute shutdown command and restart the Oracle database.

Connect SQL*Plus to Hung Oracle Database

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