Rac Database is unable to start on node 2, it is up on node 1.

[oracle-alinafe.qa.net:oracle:OmsDB2:$trace]: sp

………Connected to an idle instance.

idle> startup

ORA-27504: IPC error creating OSD context

idle> exit

cd $ORACLE_BASE/diag/rdbms/omsdb/OmsDB2/trace

vi alert_OmsDB2.log — Error not logged in alert log.

cd $ORACLE_BASE/diag/rdbms/omsdb/OmsDB2/trace

grep -i IPC *

…..

OmsDB2_m000_9547.trc:ORA-27546: Oracle compiled against IPC interface version 3.2 found version 3.3

…….

 

vi  /u01/app/oracle/diag/crs/oracle-alinafe01/crs/trace/crsd_oraagent_oracle.trc

……..

CRS-5017: The resource action “ora.omsdb.db start” encountered the following error:

ORA-27504: IPC error creating OSD context

. For details refer to “(:CLSN00107:)” in “/u01/app/oracle/diag/crs/oracle-alinafe01/crs/trace/crsd_oraagent_oracle.trc”.

What do Oracle Docs say?

RA-27504: IPC error creating OSD context

Cause: This is an operating system/cluster interconnect error.
Action: Check the value of errno and contact Oracle Support Services.

RA-27546: Oracle compiled against IPC interface version string.string found version string.string

Cause: A misconfiguration or installation error occurred.
Action: Install the IPC library for this release of Oracle.
Were any OS updates done – Yes:
Oracle recommends relinking after Operating system has been patched.

Do a relink of the oracle libraries :

$ cd $ORACLE_HOME/rdbms/lib
$ make -f ins_rdbms.mk rac_on ioracle

Startup works:

[oracle-alinafe.qa.brivo.net:oracle:OmsDB2:$db1]: srvctl status database -d omsdb

Instance OmsDB1 is running on node oracle-alinafe00

Instance OmsDB2 is running on node oracle-alinafe01