查看oracle rac的节点

可以借助gv$instance视图来查询，例如

SQL> desc gv$instance;
 名称                                      是否为空? 类型
 ----------------------------------------- -------- ---------------

 INST_ID                                            NUMBER
 INSTANCE_NUMBER                        NUMBER
 INSTANCE_NAME                             VARCHAR2(16)
 HOST_NAME                                     VARCHAR2(64)
 VERSION                                           VARCHAR2(17)
 STARTUP_TIME                                 DATE
 STATUS                                             VARCHAR2(12)
 PARALLEL                                         VARCHAR2(3)
 THREAD#                                           NUMBER
 ARCHIVER                                          VARCHAR2(7)
 LOG_SWITCH_WAIT                          VARCHAR2(15)
 LOGINS                                               VARCHAR2(10)
 SHUTDOWN_PENDING                       VARCHAR2(3)
 DATABASE_STATUS                          VARCHAR2(17)
 INSTANCE_ROLE                                VARCHAR2(18)
 ACTIVE_STATE                                   VARCHAR2(9)
 BLOCKED                                            VARCHAR2(3)
SQL> select instance_number,instance_name,host_name,status,version from gv$instance;

INSTANCE_NUMBER INSTANCE_NAME    HOST_NAME            STATUS       VERSION
--------------- ---------------- -------------------- ------------ -------------

              2 clus2            NODE1                OPEN         10.2.0.1.0
              1 clus1            NODE2                OPEN         10.2.0.1.0

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