Oracle 11g RAC oc4j/gsd Offline

  Oracle 11g RAC中，發現oc4j以及gsd服務都處於offline狀態，這是Oracle 11g RAC默認情形。即便如此，並不影響數據庫的使用，因為 oc4j 是用於WLM 的一個資源, WLM在 11.2.0.2 才可用。GSD則是用於支持dbca,srvctl,oem等的交互工具。本文描述將這兩個服務切換到online。

1、環境
 [root@linux2 ~]# cat /etc/issue
 Enterprise Linux Enterprise Linux Server release 5.5 (Carthage)
 Kernel \r on an \m

 [root@linux2 bin]# ./crsctl query crs activeversion
 Oracle Clusterware active version on the cluster is [11.2.0.1.0]

2、oc4j與所有的gsd處於offline
 [grid@linux2 ~]$ crs_stat -t | grep OFFLINE
 ora.gsd        ora.gsd.type   OFFLINE   OFFLINE
 ora.linux1.gsd application    OFFLINE   OFFLINE
 ora.linux2.gsd application    OFFLINE   OFFLINE
 ora.oc4j       ora.oc4j.type  OFFLINE   OFFLINE

3、啟動oc4j服務
 #使用srvctl 來啟動oc4j服務
 [grid@linux2 ~]$ srvctl start oc4j
 OC4J could not be started
 PRCR-1079 : Failed to start resource ora.oc4j
 CRS-2501: Resource 'ora.oc4j' is disabled    #提示該服務處於disable狀態

 #嘗試使用crsctl來啟動，依然失敗
 [grid@linux2 ~]$ crsctl start res ora.oc4j -init
 CRS-2613: Could not find resource 'ora.oc4j'.
 CRS-4000: Command Start failed, or completed with errors.

 #下面先將狀態置為enable狀態
 [grid@linux2 ~]$ srvctl enable oc4j
 #再次啟動成功
 [grid@linux2 ~]$ srvctl start oc4j
 [grid@linux2 ~]$ crs_stat -t | grep oc4j
 ora.oc4j       ora.oc4j.type  ONLINE    ONLINE    linux2

4、啟動gsd服務
 #查看節點linux1上所有的資源狀態，可以看到輸出的信息表明GSD也被disable了
 [grid@linux2 ~]$ srvctl status nodeapps -n linux1
 -n <node_name> option has been deprecated.
 VIP linux1-vip is enabled
 VIP linux1-vip is running on node: linux1
 Network is enabled
 Network is running on node: linux1
 GSD is disabled
 GSD is not running on node: linux1
 ONS is enabled
 ONS daemon is running on node: linux1
 eONS is enabled
 eONS daemon is running on node: linux1

 #下面查看節點linux2上所有的資源狀態，也可以看到輸出的信息表明GSD也被disable了
 [grid@linux2 ~]$ srvctl status nodeapps -n linux2
 -n <node_name> option has been deprecated.
 VIP linux2-vip is enabled
 VIP linux2-vip is running on node: linux2
 Network is enabled
 Network is running on node: linux2
 GSD is disabled
 GSD is not running on node: linux2
 ONS is enabled
 ONS daemon is running on node: linux2
 eONS is enabled
 eONS daemon is running on node: linux2

 #將所有的服務置於enable狀態
 [grid@linux2 ~]$ srvctl enable nodeapps
 PRKO-2415 : VIP is already enabled on node(s): linux1,linux2
 PRKO-2416 : Network resource is already enabled.
 PRKO-2417 : ONS is already enabled on node(s): linux1,linux2
 PRKO-2418 : eONS is already enabled on node(s): linux1,linux2

 #再次查看GSD的狀態已經變成enable了
 [grid@linux2 ~]$ srvctl status nodeapps
 VIP linux1-vip is enabled
 VIP linux1-vip is running on node: linux1
 VIP linux2-vip is enabled
 VIP linux2-vip is running on node: linux2
 Network is enabled
 Network is running on node: linux1
 Network is running on node: linux2
 GSD is enabled
 GSD is not running on node: linux1
 GSD is not running on node: linux2
 ONS is enabled
 ONS daemon is running on node: linux1
 ONS daemon is running on node: linux2
 eONS is enabled
 eONS daemon is running on node: linux1
 eONS daemon is running on node: linux2

 [grid@linux2 ~]$ crs_stat -t | grep OFFLINE
 ora.gsd        ora.gsd.type   OFFLINE   OFFLINE
 ora.linux1.gsd application    OFFLINE   OFFLINE
 ora.linux2.gsd application    OFFLINE   OFFLINE

 #啟動GSD服務
 [grid@linux2 ~]$ srvctl start nodeapps
 PRKO-2421 : Network resource is already started on node(s): linux1,linux2
 PRKO-2420 : VIP is already started on node(s): linux1,linux2
 PRKO-2420 : VIP is already started on node(s): linux1,linux2
 PRKO-2422 : ONS is already started on node(s): linux1,linux2
 PRKO-2423 : eONS is already started on node(s): linux1,linux2

 #驗證GSD服務
 [grid@linux2 ~]$ crs_stat -t | grep OFFLINE
 [grid@linux2 ~]$ crs_stat -t | grep gsd
 ora.gsd        ora.gsd.type   ONLINE    ONLINE    linux1
 ora.linux1.gsd application    ONLINE    ONLINE    linux1
 ora.linux2.gsd application    ONLINE    ONLINE    linux2

 #Author : Robinson
 #Blog   : http://blog.csdn.net/robinson_0612

5、關於GSD
 The Global Services Daemon (GSD) runs on each node with one GSD process per node.
 The GSD coordinates with the cluster manager to receive requests from clients such as the DBCA, EM,
 and the SRVCTL utility to execute administrative job tasks such as instance startup or shutdown.
 The GSD is not an Oracle instance background process and is therefore not started with the Oracle instance.
 GSD與rac的管理工具dbca srvctl oem進行交互，用來完成實例的啟動關閉等管理任務。
 為了保證這些管理工具運行正常必須在所有的節點上先啟動 gsd。
 一個GSD進程支持在一個節點的多個rac.gsd進程，位於$ORACLE_HOME/bin目錄下。
 其log文件為$oracle_home /srvm/log/gsdaemon.log。

 例如：
 假設使用oem工具來啟動一個實例，oem把該任務傳遞給相應的智能引擎，該智能引擎生成一個包含SRVCTL命令的腳本文件，
 GSD進程讀取該腳本文件並且執行該腳本，最后GSD把執行結果返回給智能引擎,近而智能引擎返回給OEM。

 又例如假設使用srvctl工具關閉所有的實例，GSD進程接受來自SRVCTL工具發出的請求，並
 在本地節點上執行該請求，然后把執行結果返回給SRVCTL會話。
轉：http://blog.csdn.net/leshami/article/details/8471546