以下是oracle服务器，2台小机做rac，近期检查，lsnr进程显示offline，但应用能正常使用数据库，请高手指教解决。
rac01:/#>su - oracle
$ bash
bash-3.2$ crs_stat -t
Name Type Target State Host
------------------------------------------------------------
ora.orcl.db application ONLINE ONLINE rac01
ora....l1.inst application ONLINE ONLINE rac01
ora....l2.inst application ONLINE ONLINE rac02
ora....SM1.asm application ONLINE ONLINE rac01
ora....01.lsnr application OFFLINE OFFLINE ora.rac01.gsd application ONLINE ONLINE rac01
ora.rac01.ons application ONLINE ONLINE rac01
ora.rac01.vip application ONLINE ONLINE rac01
ora....SM2.asm application ONLINE ONLINE rac02
ora....02.lsnr application OFFLINE OFFLINE ora.rac02.gsd application ONLINE ONLINE rac02
ora.rac02.ons application ONLINE ONLINE rac02
ora.rac02.vip application ONLINE ONLINE rac02
bash-3.2$ lsnrctl status
LSNRCTL for IBM/AIX RISC System/6000: Version 11.1.0.6.0 - Production on 31-AUG-2011 08:02:54
Copyright (c) 1991, 2007, Oracle. All rights reserved.
Connecting to (ADDRESS=(PROTOCOL=tcp)(HOST=)(PORT=1521))
STATUS of the LISTENER
------------------------
Alias LISTENER
Version TNSLSNR for IBM/AIX RISC System/6000: Version 11.1.0.6.0 - Production
Start Date 25-AUG-2011 10:22:40
Uptime 5 days 21 hr. 40 min. 13 sec
Trace Level off
Security ON: Local OS Authentication
SNMP ON
Listener Parameter File /opt/oracle/product/11.1/db_1/network/admin/listener.ora
Listener Log File /opt/oracle/diag/tnslsnr/rac01/listener/alert/log.xml
Listening Endpoints Summary...
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=rac01)(PORT=1521)))
Services Summary...
Service "+ASM" has 1 instance(s).
Instance "+ASM1", status READY, has 1 handler(s) for this service...
Service "+ASM_XPT" has 1 instance(s).
Instance "+ASM1", status READY, has 1 handler(s) for this service...
Service "orcl" has 2 instance(s).
Instance "orcl1", status READY, has 2 handler(s) for this service...
Instance "orcl2", status READY, has 1 handler(s) for this service...
Service "orclXDB" has 2 instance(s).
Instance "orcl1", status READY, has 1 handler(s) for this service...
Instance "orcl2", status READY, has 1 handler(s) for this service...
Service "orcl_XPT" has 2 instance(s).
Instance "orcl1", status READY, has 2 handler(s) for this service...
Instance "orcl2", status READY, has 1 handler(s) for this service...
The command completed successfully
bash-3.2$
以上是从网上看到的查看的部分状态，本人新手，请详细指点，谢谢
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