今天照例开始学习oracle,实例启动了，但是listener却突然很奇怪，怎么都起不来。
我检查了下listener配置，网络配置，ssh服务，一切都正常，最后看防火墙开着，关了以后，问题还是照旧。
[oracle@oel log]$ lsnrctl
LSNRCTL for Linux: Version 10.2.0.1.0 - Production on 02-MAY-2013 12:11:38
Copyright (c) 1991, 2005, Oracle. All rights reserved.
sWelcome to LSNRCTL, type "help" for information.
LSNRCTL> tatus
Connecting to (ADDRESS=(PROTOCOL=tcp)(HOST=oel.oracle.com)(PORT=1521))
TNS-12541: TNS:no listener
TNS-12560: TNS:protocol adapter error
TNS-00511: No listener
Linux Error: 111: Connection refused
Connecting to (ADDRESS=(PROTOCOL=ipc)(KEY=PNPKEY))
start
TNS-12541: TNS:no listener
TNS-12560: TNS:protocol adapter error
TNS-00511: No listener
Linux Error: 111: Connection refused
LSNRCTL> Starting /u01/app/ora10g/product/10.2.0/db_1/bin/tnslsnr: please wait...
TNSLSNR for Linux: Version 10.2.0.1.0 - Production
System parameter file is /u01/app/ora10g/product/10.2.0/db_1/network/admin/listener.ora
Log messages written to /u01/app/ora10g/product/10.2.0/db_1/network/log/listener.log
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=oel.oracle.com)(PORT=1521)))
Error listening on: (ADDRESS=(PROTOCOL=ipc)(KEY=PNPKEY))
TNS-12555: TNS:permission denied
TNS-12560: TNS:protocol adapter error
TNS-00525: Insufficient privilege for operation
Linux Error: 1: Operation not permitted
Listener failed to start. See the error message(s) above...
最后各处查找，总算找到了问题根源。在 /var/tmp下的 .oracle权限有问题
[root@oel tmp]# ll -a
total 24
drwxrwxrwt 4 root root 4096 May 2 12:10 .
drwxr-xr-x 24 root root 4096 Jun 16 2012 ..
drwxrwxrwt 2 root root 4096 May 2 12:11 .oracle
drwx------ 2 oracle dba 4096 May 1 12:36 yum-oracle-n3UNcY
[root@oel tmp]# cd .oracle
[root@oel .oracle]# ll
total 0
srwxrwxrwx 1 oracle dba 0 Apr 1 16:44 s#16480.1
srwxrwxrwx 1 oracle dba 0 Apr 1 16:44 s#16480.2
srwxrwxrwx 1 ora11g dba 0 Apr 21 16:59 s#2171.1
srwxrwxrwx 1 ora11g dba 0 Apr 21 16:59 s#2171.2
srwxrwxrwx 1 ora11g dba 0 Apr 21 16:59 sPNPKEY
[root@oel .oracle]#
改正一下，应该是上次启动的时候用root来启动，之后再用oracle用户就启动不了了。
[root@oel tmp]# chown oracle:dba .oracle
[root@oel tmp]# ll
total 4
drwx------ 2 oracle dba 4096 May 1 12:36 yum-oracle-n3UNcY
[root@oel tmp]# ll -a
total 24
drwxrwxrwt 4 root root 4096 May 2 12:10 .
drwxr-xr-x 24 root root 4096 Jun 16 2012 ..
drwxrwxrwt 2 oracle dba 4096 May 2 12:11 .oracle
drwx------ 2 oracle dba 4096 May 1 12:36 yum-oracle-n3UNcY
修改以后，再启动一次试试。成功了。
LSNRCTL> status
Connecting to (ADDRESS=(PROTOCOL=tcp)(HOST=oel.oracle.com)(PORT=1521))
TNS-12541: TNS:no listener
TNS-12560: TNS:protocol adapter error
TNS-00511: No listener
Linux Error: 111: Connection refused
Connecting to (ADDRESS=(PROTOCOL=ipc)(KEY=PNPKEY))
startTNS-12541: TNS:no listener
TNS-12560: TNS:protocol adapter error
TNS-00511: No listener
Linux Error: 111: Connection refused
LSNRCTL>
Starting /u01/app/ora10g/product/10.2.0/db_1/bin/tnslsnr: please wait...
TNSLSNR for Linux: Version 10.2.0.1.0 - Production
System parameter file is /u01/app/ora10g/product/10.2.0/db_1/network/admin/listener.ora
Log messages written to /u01/app/ora10g/product/10.2.0/db_1/network/log/listener.log
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=oel.oracle.com)(PORT=1521)))
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=PNPKEY)))
Connecting to (ADDRESS=(PROTOCOL=tcp)(HOST=oel.oracle.com)(PORT=1521))
STATUS of the LISTENER
------------------------
Alias LISTENER
Version TNSLSNR for Linux: Version 10.2.0.1.0 - Production
Start Date 02-MAY-2013 12:15:07
Uptime 0 days 0 hr. 0 min. 0 sec
Trace Level off
Security ON: Local OS Authentication
SNMP OFF
Listener Parameter File /u01/app/ora10g/product/10.2.0/db_1/network/admin/listener.ora
Listener Log File /u01/app/ora10g/product/10.2.0/db_1/network/log/listener.log
Listening Endpoints Summary...
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=oel.oracle.com)(PORT=1521)))
(DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=PNPKEY)))
Services Summary...
Service "CUST01" has 1 instance(s).
Instance "CUST01", status UNKNOWN, has 1 handler(s) for this service...
The command completed successfully
LSNRCTL>
