【转载】告警日志大量kewastUnPackStats(): bad magic 1 (0xffffffff7df9f1ae, 0)
2015-04-28 13:28 AlfredZhao 阅读(395) 评论(0) 编辑 收藏 举报原文作者:eygle 链接:http://www.eygle.com/archives/2012/06/kewastunpackstats.html
在告警日志中,可能遇到大量如下提示信息:
kewastUnPackStats(): bad magic 1 (0x000000002BC07DD9, 0)
kewastUnPackStats(): bad magic 1 (0x000000002BC07DD9, 0)
kewastUnPackStats(): bad magic 1 (0x000000002BC07DCF, 0)
kewastUnPackStats(): bad magic 1 (0x000000002BC07DCF, 0)
kewastUnPackStats(): bad magic 1 (0x000000002BC07DDF, 0)
kewastUnPackStats(): bad magic 1 (0x000000002BC07DDF, 0)
这是一个已知BUG导致的,主要是由于升级到11g后的一些变更导致的,以下是MOS的相关文档:
Kewastunpackstats(): Bad Magic 1 (0x1108f7b87, 0) In Alert Logfile After Upgrading to 11.2.0.1 (Doc ID 1227524.1)
文档提示,这是由于ASH信息读取出错导致的:
It is caused by the variable part of the Active Session History rows (the moduile, action program, etc. information) not being stored properly, causing any read-back of this data through views like (G)V$ACTIVE_SESSION_HISTORY to fail.
该BUG不会引起严重问题,在Oracle Database 12c或者11.2.0.2之后的补丁集中被修正。