先从oem上删除有关的所有target
target: RAC node1(instance,asm,crs,listener……)
用download脚本方式安装，在gc server机上验证ssh等价性先（保证安装过程不输密码）
$OMS_HOME/sysman/prov/resources/scripts/sshUserSetup.sh -hosts "rac01" -user oracle
时区已经设置过了，具体安装过程是参照这里的
http://www.linuxdiyf.com/viewarticle.php?id=23373
完了之后start agent，一启动马上down
$AGENT_HOME/sysman/log/emagent.trc里面报错：
FATAL_ERROR::500|ORA-20618: The specified agent is in the process of being deleted from the repository, wait for deletion to complete before restarting the agent.
看来是卸载不干净，上metalink一看，原来是bug 4960108，而且没有修正的版本
解决方法是在oms db中直接删除表里面没清除干净的target信息
sqlplus sysman@emrep
delete from MGMT_EMD_PING a where a.target_guid in (select target_guid from MGMT_TARGETS_DELETED);
delete from MGMT_EMD_PING_CHECK a where a.target_guid in (select target_guid from MGMT_TARGETS_DELETED);
delete from MGMT_TARGETS_DELETED;
commit;
再$AGENT_HOME/bin/emctl start agent，$AGENT_HOME/bin/emctl upload agent
oem console的target页面终于出现rac01了……
剩下的就是configure rac instance,asm这些了
metalink里面提到需要再重装agent，我没重装一样也好好的用
提示：刚装完agent需要upload到oms的东西比较多，会出现upload timeout，没关系，多upload几下就好了