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主题： Oracle Net Services - Tracing and Logging at a Glance

yanghui

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发表于：

2015-7-13 16:25:01 | [全部帖] [楼主帖]

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一、Oracle trace的相关参数

TRACE_LEVEL_[CLIENT SERVER LISTENER]     = [0-16 USER ADMIN SUPPORT OFF]
TRACE_FILE_[CLIENT SERVER LISTENER]      = <FILE NAME>
TRACE_DIRECTORY_[CLIENT SERVER LISTENER] = <DIRECTORY>
TRACE_UNIQUE_[CLIENT SERVER LISTENER]    = [ON TRUE OFF FALSE]
TRACE_TIMESTAMP_[CLIENT SERVER LISTENER] = [ON TRUE OFF FALSE] #Oracle8i+
TRACE_FILELEN_[CLIENT SERVER LISTENER]   = <SIZE in KB> #Oracle8i+
TRACE_FILENO_[CLIENT SERVER LISTENER]    = <NUMBER> #Oracle8i+
LOG_FILE_[CLIENT SERVER LISTENER]        = <FILE NAME>
LOG_DIRECTORY_[CLIENT SERVER LISTENER]   = <DIRECTORY NAME>
LOGGING_LISTENER                         = [ON OFF]
TNSPING.TRACE_LEVEL                      = [0-16 USER ADMIN SUPPORT OFF]
TNSPING.TRACE_DIRECTORY                  = <DIRECTORY>
NAMES.TRACE_LEVEL                        = [0-16 USER ADMIN SUPPORT OFF]
NAMES.TRACE_FILE                         = <FILE NAME>
NAMES.TRACE_DIRECTORY                    = <DIRECTORY>
NAMES.TRACE_UNIQUE                       = [ON OFF]
NAMES.LOG_FILE                           = <FILE NAME>
NAMES.LOG_DIRECTORY                      = <DIRECTORY>
NAMES.LOG_UNIQUE                         = [ON OFF]
NAMESCTL.TRACE_LEVEL                     = [0-16 USER ADMIN SUPPORT OFF]
NAMESCTL.TRACE_FILE                      = <FILE NAME>
NAMESCTL.TRACE_DIRECTORY                 = <DIRECTORY>
NAMESCTL.TRACE_UNIQUE                    = [ON OFF]NOTES ON TRACING 11g AND NEWER CLIENT/SERVER/LISTENER/CMAN

对于Oracle 11g，使用传统的Oracle net tracing时，必须添加下列参数

Sqlnet.ora file on either client or server:
DIAG_ADR_ENABLED=OFF
Listener.ora file:
DIAG_ADR_ENABLED_<listener_name>=OFF
CMAN.ORA:
DIAG_ADR_ENABLED=OFF
ADR_BASE=c:\your_directory

二、oracle net trace的组件，参数文件及缺省的trace文件

Oracle Net Component     Configuration File            Default Trace File
-----------------------   ---------------------          --------------------------------
Oracle Net Listener       LISTENER.ORA                   LISTENER.TRC
Oracle Net - Client       SQLNET.ORA on client           CLI*.TRC
Oracle Net  - Server      SQLNET.ORA on server           SVR_*.TRC
TNSPING                   SQLNET.ORA on client server  TNSPING.TRC
Oracle Name Server        NAMES.ORA                      NAMES.TRC
Oracle NAMESCTL           SQLNET.ORA on server
Oracle Connection Manager CMAN.ORA

三、TRACE时的注意事项

1、确保所需trace组建的配置文件存在
缺省情况下，Oracle会从下列位置搜索网络配置文件

a.TNS_ADMIN environment variable (incl. Windows Registry Key)
b./etc or /var/opt/oracle (Unix)
c.$ORACLE_HOME/network/admin (Unix)
d.%ORACLE_HOME%/Network/Admin or %ORACLE_HOME%/Net80/Admin (Windows)
Note: User-specific Oracle Net parameters may also reside in $HOME/sqlnet.ora file.
An Oracle Net server installation is also a client itself.

2、确保trace文件所在的磁盘有足够的空间

3、当有关Oracle net故障解决后应立即禁用Oracle net trace特性

4、大型的跟踪日志文件使得进程开销过大，因此在无异常的情况下关闭trace特性，截断日志文件等以提高Oracle net整体性能

5、确保连接的用户对跟踪日志文件所在的路径用户有写权限

6、对于服务器端的trace，将其置为OFF后，并不能立即停止服务器端的trace，需要重启监听

7、Oracle Net本身也产生相关的日志，如监听日志,sqlnet日志等，Oracle Net trace则是在此基础之上提供更为详尽的故障诊断信息

--转自