Problema

Tentativa de iniciar o Oracle Clusterware em um dos nodes do RAC falha com o seguinte erro:

# crsctl start crs
CRS-6706: Oracle Clusterware Release patch level ('2695881610') does not match Software patch level ('724960844'). Oracle Clusterware cannot be started.
CRS-4000: Command Start failed, or completed with errors.

Isso ocorreu após uma aplicação de patch com falha no Grid Home.

Solução

1) Atualiza informações sobre os patches aplicados no Oracle Home

$ORACLE_HOME/bin/clscfg -localpatch
clscfg: EXISTING configuration version 0 detected.
Creating OCR keys for user 'root', privgrp 'root'..
Operation successful.

2) Ajusta permissões do Grid Home para o usuário root:

$ORACLE_HOME/crs/install/rootcrs.sh -lock
Using configuration parameter file: /u01/app/product/19.0.0.0/grid/crs/install/crsconfig_params
The log of current session can be found at:
  /u01/app/grid/crsdata/rac02/crsconfig/crslock_rac02_2021-07-02_04-30-03PM.log
2021/07/02 16:30:05 CLSRSC-329: Replacing Clusterware entries in file 'oracle-ohasd.service'

3) Inicia o Clusterware

# crsctl start crs
CRS-4123: Oracle High Availability Services has been started.

Referência:

Patching 12.2.0.1 Grid Infrastructure gives error CRS-6706: Oracle Clusterware Release Patch Level (‘748994161’) Does Not Match Software Patch Level (Doc ID 2348013.1)