3、查看RAC集群里节点的配置信息
  node1-> olsnodes
  node1
  node2
  node1-> olsnodes -n -i -s           ---  -n列出节点编号 -i列出虚拟ip -s列出状态
  node1   1       node1-vip       Active
  node2   2       node2-vip       Active
  4、查看RAC集群中软件版本信息
  1)查看集群软件使用版本信息
  node1-> crsctl query crs activeversion
  Oracle Clusterware active version on the cluster is [11.2.0.4.0]
  2)查看集群软件发行版本信息
  node1-> crsctl query crs releaseversion
  Oracle High Availability Services release version on the local node is [11.2.0.4.0]
  3)查看集群软件安装版本信息
  node1-> crsctl query crs softwareversion
  Oracle Clusterware version on node [node1] is [11.2.0.4.0]
  5、查看集群软件表决磁盘信息
  node1-> crsctl query css votedisk
  ##  STATE    File Universal Id                File Name Disk group
  --  -----    -----------------                --------- ---------
  1. ONLINE   2a0486c2db354fbfbf5d5d3b6b2af4fd (ORCL:VOL1) [GRIDDG]
  Located 1 voting disk(s).
  6、查看系统DNS相关配置信息
  node1-> crsctl query dns -servers
  CRS-10018: the following configuration was found on the system:
  CRS-10019: There are 1 domains in search order. They are:
  localdomain
  CRS-10022: There are 1 name servers. They are:
  172.16.0.191
  CRS-10020: number of retry attempts for name lookup is: 4
  CRS-10021: timeout for each name lookup is: 5
  以上信息来源于:
  node1-> cat /etc/resolv.conf
  search localdomain
  nameserver 172.16.0.191
  7、查看集群SCAN VIP信息
  node1-> srvctl config scan
  SCAN name: scan-cluster.localdomain, Network: 1/172.16.0.0/255.255.240.0/eth0
  SCAN VIP name: scan1, IP: /scan-cluster.localdomain/172.16.0.203
  node1-> srvctl config scan_listener
  SCAN Listener LISTENER_SCAN1 exists. Port: TCP:1521
  8、查看OCR信息
  [root@node1 bin]# ./ocrcheck -local
  Status of Oracle Local Registry is as follows :
  Version                  :          3
  Total space (kbytes)     :     262120
  Used space (kbytes)      :       2676
  Available space (kbytes) :     259444
  ID                       : 1155296004
  Device/File Name         : /u01/app/11.2.0/grid/cdata/node1.olr
  Device/File integrity check succeeded
  Local registry integrity check succeeded
  Logical corruption check succeeded
  9、查看OCR集群软件备份信息
  node1-> ocrconfig -showbackup
  node1     2015/04/20 15:58:34     /u01/app/11.2.0/grid/cdata/scan-cluster/backup00.ocr
  node1     2015/04/20 15:58:34     /u01/app/11.2.0/grid/cdata/scan-cluster/day.ocr
  node1     2015/04/20 15:58:34     /u01/app/11.2.0/grid/cdata/scan-cluster/week.ocr
  PROT-25: Manual backups for the Oracle Cluster Registry are not available
  10、启、停集群数据库
  1)停止RAC数据库
  node1-> srvctl stop database -d devdb
  2)停止集群服务
  [root@node1 ~]# cd /u01/app/11.2.0/grid/bin
  [root@node1 bin]# ./crsctl stop cluster -all
  3)启动集群服务
  [root@node1 bin]# pwd
  /u01/app/11.2.0/grid/bin
  [root@node1 bin]# ./crsctl start cluster -all
  4)启动RAC数据库
  node1-> srvctl start database -d devdb