MMON Slave日志[KDL_TRIM]: NEWLEN: MESSAGES

有网友反映windows 2003 上的10.2.0.4数据库,MMON的Slave后台进程报带有NEWLEN: MESSAGES的相关日志,如:


*** ACTION NAME:(Auto ADDM Slave Action) 2011-09-09 18:00:12.053
*** MODULE NAME:(MMON_SLAVE) 2011-09-09 18:00:12.053
*** SERVICE NAME:(SYS$BACKGROUND) 2011-09-09 18:00:12.053
*** SESSION ID:(797.606) 2011-09-09 18:00:12.053
[kdl_trim]: newlen: 0
[kdl_trim]: newlen: 0
[kdl_trim]: newlen: 0
[kdl_trim]: newlen: 0
[kdl_trim]: newlen: 0
[kdl_trim]: newlen: 0
[kdl_trim]: newlen: 0
[kdl_trim]: newlen: 0
[kdl_trim]: newlen: 0
[kdl_trim]: newlen: 0
[kdl_trim]: newlen: 0
[kdl_trim]: newlen: 0

这一般是由于10.2.0.4上已经confirmed的bug:”Bug 6972843 – Unnecessary trace files with “[kdl_trim]: newlen” text in them [ID 6972843.8]”所引起的,在bug目前确认仅在10.2.0.4上发生,而到10.2.0.4.1中已经被修复了。

主要是MMON的辅助slave进程会不必要地输出如”[kdl_trim]: newlen: 0″的日志信息:


Unnecessary trace files may be generated with entries that read:'[kdl_trim]: newlen: '.
 
Hdr: 9600827 10.2.0.4 RDBMS 10.2.0.4 RAM LOBS PRODID-5 PORTID-212
Abstract: [KDL_TRIM]: NEWLEN: MESSAGES IN MMON SLAVES TRACES

PROBLEM:
--------
MMON slave processes traces contains the following entries despite patch 
6972843 applied

*** NAME:(Auto ADDM Slave Action) 2010-04-14 06:00:42.899
*** NAME:(MMON_SLAVE) 2010-04-14 06:00:42.899
*** NAME:(SYS$BACKGROUND) 2010-04-14 06:00:42.899
*** ID:(2472.45569) 2010-04-14 06:00:42.899
[kdl_trim]: newlen: 0
[kdl_trim]: newlen: 0
[kdl_trim]: newlen: 0
[kdl_trim]: newlen: 0
[kdl_trim]: newlen: 0
[kdl_trim]: newlen: 0
[kdl_trim]: newlen: 0
[kdl_trim]: newlen: 0

DIAGNOSTIC ANALYSIS:
--------------------
- Opatch contains patch 6972843 applied

WORKAROUND:
-----------
none

RELATED BUGS:
-------------
Bug 6972843 - HOURLY TRACE FILE CREATED IN BDUMP FOR AUTO ADDM SLAVE ACTION

该bug可以被忽略,但是如果日志产生过于频繁的话可以考虑升级10.2.0.4的PSU或者直接升级到10.2.0.5。

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