Oracle11.2.0.3 ORA-3136 连接超时错误解决

1.问题现象
alert日志文件报如下错误
WARNING: inbound connection timed out (ORA-3136)
Mon Oct 20 14:33:52 2008
WARNING: inbound connection timed out (ORA-3136)
Mon Oct 20 14:34:46 2008
WARNING: inbound connection timed out (ORA-3136)

sqlnet.log中记录了如下错误:
Fatal NI connect error 12170.

  VERSION INFORMATION:
        TNS for Linux: Version 11.2.0.3.0 - Production
        Oracle Bequeath NT Protocol Adapter for Linux: Version 11.2.0.3.0 - Production
        TCP/IP NT Protocol Adapter for Linux: Version 11.2.0.3.0 - Production
  Time: 20-OCT-2008 14:34:46
  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=192.168.123.103)(PORT=3124))

2.Metalink上给出了如下的解决方案
1）set INBOUND_CONNECT_TIMEOUT_<listenername>=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

如果不重启只是进行reload也可以修改成功
通过如下方式验证是否修改成功
LSNRCTL> show inbound_connect_timeout

修改listener的inbound_connect_timeout参数的方法
方法一:
$ lsnrctl

LSNRCTL for IBM/AIX RISC System/6000: Version 11.2.0.3.0 - Production on 29-OCT-2007 10:00:57

Copyright (c) 1991, 2006, Oracle.  All rights reserved.

Welcome to LSNRCTL, type "help" for information.

LSNRCTL> help
The following operations are available
An asterisk (*) denotes a modifier or extended command:

start               stop                status
services            version             reload
save_config         trace               spawn
change_password     quit                exit
set*                show*

LSNRCTL> show
The following operations are available after show
An asterisk (*) denotes a modifier or extended command:

rawmode                     displaymode
rules                       trc_file
trc_directory               trc_level
log_file                    log_directory
log_status                  current_listener
inbound_connect_timeout     startup_waittime
snmp_visible                save_config_on_stop
dynamic_registration

LSNRCTL> show inbound_connect_timeout
Connecting to (ADDRESS=(PROTOCOL=tcp)(HOST=)(PORT=1521))
LISTENER parameter "inbound_connect_timeout" set to 60
The command completed successfully

LSNRCTL> set inbound_connect_timeout 0
Connecting to (ADDRESS=(PROTOCOL=tcp)(HOST=)(PORT=1521))
LISTENER parameter "inbound_connect_timeout" set to 0
The command completed successfully

LSNRCTL> show inbound_connect_timeout
Connecting to (ADDRESS=(PROTOCOL=tcp)(HOST=)(PORT=1521))
LISTENER parameter "inbound_connect_timeout" set to 0
The command completed successfully

LSNRCTL> set save_config_on_stop on   #表示修改参数永久生效，否则只是临时生效，下次重启监听又还原为原来的值了

LSNRCTL> exit


方法二：

修改listener.ora文件，加入:  INBOUND_CONNECT_TIMEOUT_LISTENER_NAME=0