Archive for 8月 15th, 2005

Oracle后台进程

Bright Posted on 2005-8-15 17:00 | Views(889) | Comments (0) | Category: Oracle | Tags: oracle, 后台进程

1.DBW0(DBWn):Database Writer Process
Checkpoint occur
Dirty buffers threshold reached
Not free buffers
Timeout
RAC ping request
Tablespace offline
Tablespace read only
Table Drop or Truncate
Tablespace BEGIN BACKUP
2.LGWR:Log Writer Process
At commit
When one-third full
When there is 1 MB of redo
Every 3 seconds
Before DBWn writes

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