ITPub博客

首页 > Linux操作系统 > Linux操作系统 > "library cache pin" Reference Note

"library cache pin" Reference Note

原创 Linux操作系统 作者:yanggq 时间:2018-12-07 18:57:03 0 删除 编辑
Oracle Library Cache Pin,

Definition:

  • Versions:7.0 - 9.2 Documentation:None
  • Library cache pins are used to manage library cache concurrency. Pinning an object causes the heaps to be loaded into memory (if not already loaded). PINS can be acquired in NULL, SHARE or EXCLUSIVE modes and can be considered like a special form of lock. A wait for a "library cache pin" implies some other session holds that PIN in an incompatible mode.

Individual Waits:

Parameters:

Wait Time:

The waiter waits up to 3 seconds (1 second if PMON) for the PIN to become available. If not available then the session waits again, incrementing SEQ# in .
Handle address

来自 “ ITPUB博客 ” ,链接:http://blog.itpub.net/26706/viewspace-64585/,如需转载,请注明出处,否则将追究法律责任。

上一篇: 没有了~
下一篇: 没有了~
请登录后发表评论 登录
全部评论

注册时间:2002-10-29

  • 博文量
    1
  • 访问量
    337