Instance Startup Fails With ORA-01012: Not Logged On

(Doc ID 1365419.1)

Last updated on JUNE 18, 2017

Applies to:

Oracle Database - Enterprise Edition - Version and later
Information in this document applies to any platform.
**Checked for relevance 03-Feb-2016**


You can successfully connect as sysdba but a subsequent startup of the database fails with an ORA-1012:

/home/oracle>sqlplus / as sysdba
SQL*Plus: Release Production on Thu Oct 6 11:03:24 2011
Copyright (c) 1982, 2010, Oracle.  All rights reserved.
SQL> startup
ORA-01012: not logged on

Environment parameters like NLS_LANG , ORA_NLS33 or ORA_NLS10 have been verified and are set correctly.


Oracle has been forcefully shutdown at OS level or crashed.


Sign In with your My Oracle Support account

Don't have a My Oracle Support account? Click to get started

My Oracle Support provides customers with access to over a
Million Knowledge Articles and hundreds of Community platforms