oracle rac ora 12537,解决11gR2 Rac ORA-12537: TNS:connection closed 一例
Solaris 10, oracle 11.2.0.3, RAC, 非ASM, 使用SCAN和DNS
狀況：
# tnsping ISUITE
TNS Ping Utility for Solaris: Version 11.2.0.3.0 - Production on 12-JUN-2012 08:04:45
Copyright (c) 1997, 2011, Oracle.? All rights reserved.
Used parameter files:
Used TNSNAMES adapter to resolve the alias
Attempting to contact (DESCRIPTION= (LOAD_BALANCE=on) (ADDRESS=(PROTOCOL=TCP)(HOST=us1s-istordb03-scan)(PORT=1521)) (CONNECT_DATA=(SERVICE_NAME=ISUITE)))
OK (10 msec)
# tnsping ISUITE1
TNS Ping Utility for Solaris: Version 11.2.0.3.0 - Production on 12-JUN-2012 08:04:55
Copyright (c) 1997, 2011, Oracle.? All rights reserved.
Used parameter files:
Used TNSNAMES adapter to resolve the alias
Attempting to contact (DESCRIPTION= (LOAD_BALANCE=on) (ADDRESS=(PROTOCOL=TCP)(HOST=us1s-istordb03a-vip)(PORT=1521)) (ADDRESS=(PROTOCOL=TCP)(HOST=us1s-istordb03b-vip)(PORT=1521)) (CONNECT_DATA=(SERVICE_NAME=ISUITE)))
OK (0 msec)
# sqlplus
SQL*Plus: Release 11.2.0.3.0 Production on Tue Jun 12 06:12:38 2012
Copyright (c) 1982, 2011, Oracle.? All rights reserved.
ERROR:
ORA-12537: TNS:connection closed
# sqlplus
SQL*Plus: Release 11.2.0.3.0 Production on Tue Jun 12 06:12:38 2012
Copyright (c) 1982, 2011, Oracle.? All rights reserved.
ERROR:
ORA-12537: TNS:connection closed
tnsping可以通說明tnsnames.ora寫的沒問題，但是怎么還回有連接問題呢？
由于是11G的RAC，listener不歸oracle用戶管，是grid用戶管的。查了GI下listener相關，也沒發現異常。
在metalink上找到一篇，ID 1069517.1相關的，開始檢查
1. 用listener的owner用戶檢查rdbms_home目錄下是否有權限
# ls -l /xxx/app/oracle/product/11.2.0.3/db/bin/oracle
-rwsr-s--x?? 1 oracle?? oinstall 233186712 May 10 09:00 /xxx/app/oracle/product/11.2.0.3/db/bin/oracle
這項沒有問題。
2. 查看該目錄權限 是否是6751：
-rwsr-s--x??也沒有問題，如果這里不是這樣，請使用：
chmod 6751? /xxx/app/oracle/product/11.2.0.3/db/bin/oracle
修改。
3. 檢查oracle軟件目錄的文件系統是否支持setuid/suid，或者是被設置成了nosetuid。我開始流汗了。。。。
# mount| grep /xxx
/xxx on /dev/md/dsk/d56 read/write/nosetuid/nodevices/intr/largefiles/logging/xattr/οnerrοr=panic/dev=1540038 on Fri May 11 23:22:40 2012
我靠，居然中招了，系統組的同事，我要吐槽！！！
@*((*&(*&(!(&$))%)*(&
發郵件，15分鐘反饋，改好了，變成setuid了。問題解決。
# mount| grep /xxx
/xxx on /dev/md/dsk/d56 read/write/setuid/devices/intr/largefiles/logging/xattr/οnerrοr=panic/dev=1540038 on Tue Jun 12 07:43:59 2012
# sqlplus xxx
SQL*Plus: Release 11.2.0.3.0 Production on Tue Jun 12 07:50:30 2012
Copyright (c) 1982, 2011, Oracle.? All rights reserved.
Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - 64bit Production
With the Partitioning, Real Application Clusters and Real Application Testing options
SQL>
MOS ID 1069517
總結
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