ORA-21561: OID generation failed

I got ” ORA-21561: OID generation failed ”  error in Oracle database.

ORA-21561: OID generation failed

Details of error are as follows.

ORA-21561: OID generation failed

Cause: The handles passed in may not be valid

Action: Check the validity of the env, svc handles



SQL*Plus connections from a remote client via the listener fail with the following error:

ORA-21561 : OID generation failed

e.g.
-bash-2.05b$ sqlplus username/password@tns_connect_string

SQL*Plus: Release 11.2.0.4.0 - Production on Fri Mar 7 16:15:10 2008

Copyright (c) 1982, 2006, Oracle. All Rights Reserved.

ERROR:
ORA-21561 : OID generation failed
Enter user-name: <username>/<password>@<tns connect string>
Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.4.0 - 64bit Production
With the Partitioning and Data Mining options

SQL>

OID generation failed

This ORA-21561 errors are related with the handles passed in may not be valid.

Check the validity of the env, svc handles.

Incorrect /etc/hosts mapping for the client machine or no mapping at all.

To solve this error, Check the client’s /etc /…/hosts file and verify that the local node is correctly identified with a mapping for both the short and fully qualified name of the host.

Check your /etc/hosts file.

127.0.0.1 localhost localhost.localdomain

You should change it as follows.

127.0.0.1 localhost localhost.localdomain hostname

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