Oracle 11g RAC 服务器端TAF使用业务隔离功能失败问题 - Oracle数据库管理 - ITPUB论坛－专业的IT技术社区
Oracle RAC的自定义service自启动
原创 Oracle 作者：abstractcyj 时间：2020-06-04 12:33:43 718 0
我们在Oracle RAC上，可以创建针对数据库创建一个service，例如：
srvctl add service -d orcl -s test1 -i orcl1,orcl2 ...
srvctl modify service -d orcl -s test1 -y AUTOMATIC
crsctl modify res ora.orcl.test1.svc -attr "AUTO_START=always"
但是，这种方式，在节点重启的时候，service的状态不会自动变为online, 需要手动以srvctl start service -d orcl的方式将数据库的service_names修改。这样其实是不方便的。
可以直接将service_names参数修改成多个，以避免此种问题
ALTER SYSTEM SET service_names='orcl','test1' SCOPE=both SID='*';
1，手工添加service
su - oracle
[oracle@dtydb3 ~]$ srvctl add service -d epmdb -s srv_epm1 -r epmdb1 -a epmdb2 -P basic -e select -m basic -z 180 -w 5
2，查看service状态和属性
sys@EPMDB1(10.4.124.233)> select name, failover_method, failover_type, goal, clb_goal from dba_services;
NAME FAILOVER_M FAILOVER_TYPE GOAL CLB_G
-------------------- ---------- ---------------------------------------------------------------- ------------ -----
SYS$BACKGROUND NONE SHORT
SYS$USERS NONE SHORT
epmdb LONG
srv_epm1 BASIC SELECT NONE LONG
[grid@dtydb3 ~]$ crsctl status resource ora.epmdb.srv_epm1.svc -t
--------------------------------------------------------------------------------
NAME TARGET STATE SERVER STATE_DETAILS
--------------------------------------------------------------------------------
Cluster Resources
--------------------------------------------------------------------------------
ora.epmdb.srv_epm1.svc
1 ONLINE ONLINE dtydb3
[grid@dtydb3 ~]$ srvctl status service -d epmdb
Service srv_epm1 is running on instance(s) epmdb1
[grid@dtydb3 ~]$ srvctl config service -d epmdb -s srv_epm1
Service name: srv_epm1
Service is enabled
Server pool: epmdb_srv_epm1
Cardinality: 1
Disconnect: false
Service role: PRIMARY
Management policy: AUTOMATIC
DTP transaction: false
AQ HA notifications: false
Failover type: SELECT
Failover method: BASIC
TAF failover retries: 180
TAF failover delay: 5
Connection Load Balancing Goal: LONG
Runtime Load Balancing Goal: NONE
TAF policy specification: BASIC
Edition:
Preferred instances: epmdb1
Available instances: epmdb2
[grid@dtydb3 ~]$ lsnrctl status
LSNRCTL for Linux: Version 11.2.0.2.0 - Production on 13-JUN-2012 15:22:46
Copyright (c) 1991, 2010, Oracle. All rights reserved.
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=LISTENER)))
STATUS of the LISTENER
------------------------
Alias LISTENER
Version TNSLSNR for Linux: Version 11.2.0.2.0 - Production
Start Date 04-MAY-2012 14:36:04
Uptime 40 days 0 hr. 46 min. 42 sec
Trace Level off
Security ON: Local OS Authentication
SNMP OFF
Listener Parameter File /oracle/11.2.0/grid/network/admin/listener.ora
Listener Log File /oracle/app/oracle/diag/tnslsnr/dtydb3/listener/alert/log.xml
Listening Endpoints Summary...
(DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=LISTENER)))
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=10.4.124.243)(PORT=1521)))
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=10.4.124.233)(PORT=1521)))
Services Summary...
Service "+ASM" has 1 instance(s).
Instance "+ASM1", status READY, has 1 handler(s) for this service...
Service "epmdb" has 1 instance(s).
Instance "epmdb1", status READY, has 1 handler(s) for this service...
Service "srv_epm1" has 1 instance(s).
Instance "epmdb1", status READY, has 1 handler(s) for this service...
[grid@dtydb3 ~]$
3，修改服务，如果创建不正常的话
修改服务
---srvctl modify service -d epmdb -s srv_epm1 -r epmdb2 -a epmdb1 -P basic -e select -m basic -z 100 -w 2
--删除服务
srvctl remove service -d epmdb -s srv_epm1 -f
4，TAF测试
tnsname.ora配置
tydb_srv_epm1 =
(DESCRIPTION =
(LOAD_BALANCE = NO)
(ADDRESS = (PROTOCOL = TCP)(HOST = db1-vip)(PORT = 1521))
(ADDRESS = (PROTOCOL = TCP)(HOST = db2_vip)(PORT = 1521))
(CONNECT_DATA =
(SERVICE_NAME = srv_epm1)
)
)
关闭实例1
shutdown immediate
sqlplus system/oracle@tydb_srv_epm1
SQL> select instance_name from v$instance;
INSTANCE_NAME
----------------
epmdb2
成功切换到第二个节点
恢复还原
重启实例1 startup
切换service到实例1
su - oracle
srvctl relocate service -d epmdb -s srv_epm1 -i epmdb2 -t epmdb1
