Oracle commonly uesd tables/views and processes（一）

标签：oca   trigger   byte   process   hat   rest   users   status   roc   

PMON :periodically check the status of the server process and restore abnormal processes 。
LGWR: to write the log  buffer contents to the redo log file,oracle writes the user chenges to the redo log file and then writes the data files.
CKPT:A checkpoint is an event that triggers DBWR to require dirty data to be written to a data file when a checkpoint occurs .LGWR writes to the log .
SMON:mandatory to perform  a recovery when the database is started . reclaim space to merge free and adjacent extents in the tablespace .clean up temporary tablespace/temporary segmentes.
ARCH:only started in archive mode .when the online redo logs  is full ,copy the log the spectfied location.
DBWR:writes the database buffer cache to the data files.

Oracle commonly uesd tables/views and processes（一）

标签：oca   trigger   byte   process   hat   rest   users   status   roc   

原文地址：https://blog.51cto.com/11298469/2450506