建立四節點 RAC 啟動時報錯 ORA-01618: redo thread 4 is not enabled - cannot mount

[oracle@dm10db04 trace]$ srvctl start instance -d haiermdm -i haiermdm4
PRCR-1013 : Failed to start resource ora.haiermdm.db
PRCR-1064 : Failed to start resource ora.haiermdm.db on node dm10db04
CRS-5017: The resource action "ora.haiermdm.db start" encountered the following error: 
ORA-01618: redo thread 4 is not enabled - cannot mount
. For details refer to "(:CLSN00107:)" in "/u01/app/11.2.0/grid/log/dm10db04/agent/crsd/oraagent_oracle/oraagent_oracle.log".


CRS-2674: Start of 'ora.haiermdm.db' on 'dm10db04' failed



解決方法：由於沒有 enable thread
SYS@haiermdm2> alter database enable thread 3;


Database altered.


SYS@haiermdm2>alter database enable thread 4;    


Database altered.