Oracle10gR2ORA-3136错误解决来源

Oracle10gR2ORA-3136错误解决来源
最近一台新上线的Oracle10gR2数据库在警告日志文件中(alert.log)持续出现如下错误:

  Tue Jul 18 23:09:22 2006

  WARNING: inbound connection timed out (ORA-3136)

  Tue Jul 18 23:09:23 2006

  WARNING: inbound connection timed out (ORA-3136)

  Tue Jul 18 23:09:25 2006

  WARNING: inbound connection timed out (ORA-3136)

  Tue Jul 18 23:09:30 2006

  WARNING: inbound connection timed out (ORA-3136)

  Tue Jul 18 23:12:15 2006

  WARNING: inbound connection timed out (ORA-3136)

  同时在sqlnet.log中记录了如下错误:

  Fatal NI connect error 12170.

  VERSION INFORMATION:

  TNS for Linux: Version 10.2.0.2.0 - Production

  Oracle Bequeath NT Protocol tb Adapter for Linux: Version 10.2.0.2.0 - Production

  TCP/IP NT Protocol Adapter for Linux: Version 10.2.0.2.0 - Production

  Time: 19-JUL-2006 11:25:26

  Tracing not turned on.

  Tns error struct:

  ns main err code: 12535

  TNS-12535: TNS:operation timed out

  ns secondary err code: 12606

  nt main err code: 0

  nt secondary err code: 0

  nt OS err code: 0

  Client address: (ADDRESS=(PROTOCOL=tcp)(HOST=192.168.1.123)(PORT=58147))

  这是和网络连接相关的一个错误,Metalink上给出了如下的解决方案:

  1.set INBOUND_CONNECT_TIMEOUT_ =0 in listener.ora

  2. set SQLNET.INBOUND_CONNECT_TIMEOUT = 0 in sqlnet.ora of server.

  3. stop and start both listener and database.

  4. Now try to connect to DB and observe the behaviour

  这里重起数据库和Listener我认为是没有必要的,我们reload一下Listner应该就可以了.

  [oracle@order admin]$ lsnrctl

  LSNRCTL for Linux: Version 10.2.0.2.0 - Production on 19-JUL-2006 15:26:33

  Copyright (c) 1991, 2005, Oracle. All rights reserved.

  Welcome to LSNRCTL, type "help" for information.

  LSNRCTL> reload

  Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=172.16.9.11)(PORT=1521)))

  The command completed successfully

  LSNRCTL> services

  Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=172.16.9.11)(PORT=1521)))

  Services Summary...

  Service "order" has 2 instance(s).

  Instance "order", status UNKNOWN, has 1 handler(s) for this service...

  Handler(s):

  "DEDICATED" established:0 refused:0

  LOCAL SERVER

  Instance "order", status READY, has 1 handler(s) for this service...

  Handler(s):

  "DEDICATED" established:0 refused:0 state:ready

  LOCAL SERVER

  The command completed successfully

  LSNRCTL> show inbound_connect_timeout

  Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=172.16.9.11)(PORT=1521)))

  LISTENER parameter "inbound_connect_timeout" set to 0

  The command completed successfully

  LSNRCTL> exit

  修改之后,观察了一段时间,目前正常.

  关于SQLNET.INBOUND_CONNECT_TIMEOUT参数,Oracle建议修改该参数,以避免denial-of-service攻击.

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