inbound connect timout - INBOUND_CONNECT_TIMEOUT参数

---------- Forwarded message ----------
From: XIE WEN-MFK346 <wenxie at motorola.com>
Date: 2008/10/13
Subject: inbound_connect_time参数
To: xiewenxiewen at gmail.com


1. sqlnet.ora 参数 SQLNET.INBOUND_CONNECT_TIMEOUT
表示等待用户认证超时的时间，单位是秒，缺省值是60秒
如果用户认证超时了，服务器日志alert.log显示出错信息
"WARNING: inbound connection timed out (ORA-3136)"

举例：
连接监听器，不输入用户名/密码
sqlplus /@test

[oracle@MGT ~]$ sqlplus /@test

SQL*Plus: Release 10.2.0.4.0 - Production on Tue Jan 20 07:53:42 2009

Copyright (c) 1982, 2007, Oracle. All Rights Reserved.

ERROR:
ORA-01017: invalid username/password; logon denied


Enter user-name:

等一分钟后,alert.log报ora-3136错

Tue Jan 20 07:54:42 2009
WARNING: inbound connection timed out (ORA-3136)

编辑$ORACLE_HOME/network/admin/sqlnet.ora，设置参数SQLNET.INBOUND_CONNECT_TIMEOUT等于12秒
grep SQLNET.INBOUND_CONNECT_TIMEOUT $ORACLE_HOME/network/admin/sqlnet.ora

[oracle@MGT ~]$ grep SQLNET.INBOUND_CONNECT_TIMEOUT $ORACLE_HOME/network/admin/sqlnet.ora
SQLNET.INBOUND_CONNECT_TIMEOUT=12
[oracle@MGT ~]$

再连接监听器，不输入用户名/密码
sqlplus /@test

[oracle@MGT ~]$ sqlplus /@test

SQL*Plus: Release 10.2.0.4.0 - Production on Tue Jan 20 07:59:39 2009

Copyright (c) 1982, 2007, Oracle. All Rights Reserved.

ERROR:
ORA-01017: invalid username/password; logon denied


Enter user-name:

过了12秒，alert.log又报错了

Tue Jan 20 07:59:51 2009
WARNING: inbound connection timed out (ORA-3136)

这个参数只要修改了sqlnet.ora配置文件，便立即生效，不需要重启监听器/数据库


2. listener.ora的参数 inbound_connect_timeout_监听器名
表示等待用户连接请求超时的时间，单位是秒，缺省值是60秒
如果连接请求超时了，监听器日志listener.log显示出错信息
"TNS-12525: TNS:listener has not received client's request in time allowed"
服务器日志alert.log里不报错

举例:
用telnet命令在监听器端口建立连接
time telnet localhost 1521
过一分钟后，连接被断开

[oracle@MGT ~]$ time telnet localhost 1521
Trying 127.0.0.1...
Connected to localhost.
Escape character is '^]'.
Connection closed by foreign host.

real 1m0.015s
user 0m0.001s
sys 0m0.002s
[oracle@MGT ~]$

同时监听器日志报错

20-JAN-2009 08:01:29 * 12502
TNS-12502: TNS:listener received no CONNECT_DATA from client
20-JAN-2009 08:02:32 * * (ADDRESS=(PROTOCOL=tcp)(HOST=127.0.0.1)(PORT=3871)) * establish * * 12525
TNS-12525: TNS:listener has not received client's request in time allowed
TNS-12535: TNS:operation timed out
TNS-12606: TNS: Application timeout occurred

把参数修改成9秒
lsnrctl set inbound_connect_timeout 9

[oracle@MGT ~]$ lsnrctl set inbound_connect_timeout 9

LSNRCTL for Linux: Version 10.2.0.4.0 - Production on 20-JAN-2009 08:03:06

Copyright (c) 1991, 2007, Oracle. All rights reserved.

Connecting to (ADDRESS=(PROTOCOL=tcp)(HOST=)(PORT=1521))
LISTENER parameter "inbound_connect_timeout" set to 9
The command completed successfully
[oracle@MGT ~]$

再试
time telnet localhost 1521

[oracle@MGT ~]$ time telnet localhost 1521
Trying 127.0.0.1...
Connected to localhost.
Escape character is '^]'.
Connection closed by foreign host.

real 0m9.004s
user 0m0.000s
sys 0m0.002s
[oracle@MGT ~]$

20-JAN-2009 08:03:28 * * (ADDRESS=(PROTOCOL=tcp)(HOST=127.0.0.1)(PORT=3891)) * establish * * 12525
TNS-12525: TNS:listener has not received client's request in time allowed
TNS-12535: TNS:operation timed out
TNS-12606: TNS: Application timeout occurred

连接超时缩短为9秒

这个参数也是立即生效的，不需要重启监听器或数据库

也可以修改listener.ora配置文件，然后reload监听器，使新的参数生效
grep INBOUND_CONNECT_TIMEOUT $ORACLE_HOME/network/admin/listener.ora
lsnrctl reload

[oracle@MGT ~]$ grep INBOUND_CONNECT_TIMEOUT $ORACLE_HOME/network/admin/listener.ora
INBOUND_CONNECT_TIMEOUT_LISTENER=5
[oracle@MGT ~]$ lsnrctl reload

LSNRCTL for Linux: Version 10.2.0.4.0 - Production on 20-JAN-2009 08:05:44

Copyright (c) 1991, 2007, Oracle. All rights reserved.

Connecting to (ADDRESS=(PROTOCOL=tcp)(HOST=)(PORT=1521))
The command completed successfully
[oracle@MGT ~]$

指定时间后连接超时

[oracle@MGT ~]$ time telnet localhost 1521
Trying 127.0.0.1...
Connected to localhost.
Escape character is '^]'.
Connection closed by foreign host.

real 0m5.006s
user 0m0.002s
sys 0m0.002s
[oracle@MGT ~]$

20-JAN-2009 08:06:06 * * (ADDRESS=(PROTOCOL=tcp)(HOST=127.0.0.1)(PORT=3916)) * establish * * 12525
TNS-12525: TNS:listener has not received client's request in time allowed
TNS-12535: TNS:operation timed out
TNS-12606: TNS: Application timeout occurred

外部链接:
ORA-12525
ORA-03136
SQLNET.INBOUND_CONNECT_TIMEOUT
Connections that Used to Work in Oracle 10.1 Now Intermittently Fail with ORA-3113,ORA-3106 or ORA-3136 in 10.2
Troubleshooting ORA - 3136 WARNING Inbound Connection Timed Out
When do SQLNET.ORA changes take effect ?



Xie Wen (谢文)
Network & Operations,
Multimedia Applications & Services (MDB)
MOTOROLA Inc.
NO.104 mail box, 8th floor, Motorola Tower,
No. 1 Wang Jing East Road, Chao Yang District,
Beijing 100102 P. R. China
e-mail wenxie at motorola.com


-fin-