CRS-5017,ORA-12547

Oracle Database 11.2.0.4

Symptoms

[oracle@srv-uat-db-gen1 ~]$ srvctl start database -d BIIBDPRD
PRCR-1079 : Failed to start resource ora.biibdprd.db
ORA-12547: TNS:lost contact
CRS-5017: The resource action "ora.biibdprd.db start" encountered the following error:
ORA-12547: TNS:lost contact
. For details refer to "(:CLSN00107:)" in "/u01/app/11.2.0.3/grid/log/srv-uat-db-gen2/agent/crsd/oraagent_oracle/oraagent_oracle.log".
CRS-2674: Start of 'ora.biibdprd.db' on 'srv-uat-db-gen2' failed

Reference

・ https://adityanathoracledba.com/2015/06/20/startup-rac-database-using-srvctl-fails-with-ora-12547-tnslost-contact-crs-2632/
・ https://www.sultandba.com/2025/02/solution-to-error-ora-12547-tnslost.html
・ https://www.modb.pro/db/609181