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2008-8-8 00:40 lgydicanio
gather_stats_job问题

gather_stats_job 每天下午10点起来,运行到早6点
但是运行到一个表的INDEX时会产生library cache lock ,而且会持续很长时间,
请问是这个INDEX有问题还是其他问题,或者是正常现象!

2008-8-8 10:07 Ora-600
要不然那数据库重起,要不然把索引删除重建,要不然把共享池清空

2008-8-8 10:28 小虫08
建议你把那个索引重建了,再清空下共享池

2008-8-9 01:29 lgydicanio
今天产生一个情况,即在没有lock对象的情况下依然会发生library cache lock。
Oracle工程师给的回复是
GATHER_STATS_JOB is waiting for "library cache lock", but can't find the lock holder.
An instance might not be able to obtain a global enqueue after
hitting some earlier memory shortage issue at the master instance
on the same enqueue. This can show up as trying to get some
global enqueue but with no visible holder.
需要做的动作是 重启instance

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