今天查看某台服务器的告警文件，看到很多trc文件，内容为：
Oracle Database 10g Enterprise Edition Release 10.2.0.3.0 - 64bit Production
With the Partitioning, OLAP and Data Mining options
ORACLE_HOME = /opt/oracle/product/10.2.0
System name: Linux
Node name: localhost.localdomain
Release: 2.6.18-164.15.1.el5
Version: #1 SMP Wed Mar 17 11:30:06 EDT 2010
Machine: x86_64
Instance name: orcl
Redo thread mounted by this instance: 1
Oracle process number: 6
Unix process pid: 15900, image: oracle@localhost.localdomain (LGWR)
*** SERVICE NAME:() 2011-03-17 17:40:00.584
*** SESSION ID:(166.1) 2011-03-17 17:40:00.584
Maximum redo generation record size = 609792 bytes
Maximum redo generation change vector size = 589876 bytes
*** 2011-03-17 17:40:17.259
Media recovery not enabled or manual archival only 0x10000
直接google之解释是oracle的bug
bug号：4591936
Abstract: KCCSGA_UPDATE_CKPT,KCCDEBUG_LEVEL,MEDIA RECOVERY MESSAGES ARE LOGGED AT STARTUP
Fixed In Ver: 11.0
Solution
These messages were added for debugging purpose and can be ignored.
Delete these files manually or use some job to clean up diskspace.
At the time of writing this note , there isn't any one-off patch to fix this issue on 10.2.
You can always raise a new SR requesting for a backport fix on top of 10.2 for your platform.
一个小BUG，至多占点磁盘空间，不会危害数据库。
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