今天查詢V$ARCHIVE_PROCESSES時發現兩台機器的值不一樣
Serve A：
SQL> select * from V$ARCHIVE_PROCESSES;
PROCESS STATUS LOG_SEQUENCE STATE
---------- ------------------------------ ------------ ------------
0 ACTIVE 0 IDLE
1 ACTIVE 0 IDLE
2 ACTIVE 0 IDLE
3 ACTIVE 0 IDLE
4 STOPPED 0 IDLE
5 STOPPED 0 IDLE
[root@oel62 ~]# ps -ef |grep arc
oracle 2505 1 0 07:46 ? 00:00:01 ora_arc0_testdb
oracle 2515 1 0 07:46 ? 00:00:01 ora_arc1_testdb
oracle 2517 1 0 07:46 ? 00:00:01 ora_arc2_testdb
oracle 2519 1 0 07:46 ? 00:00:01 ora_arc3_testdb
root 4413 2989 0 09:43 pts/2 00:00:00 grep arc
從Table與Linux來看，有四個Processes在執行
Server B：
SQL> select * from V$ARCHIVE_PROCESSES;
PROCESS STATUS LOG_SEQUENCE STATE
---------- ------------------------------ ------------ ------------
0 ACTIVE 0 IDLE
1 ACTIVE 0 IDLE
2 STOPPED 0 IDLE
testfh:/home/mgr>ps -ef |grep arc
cloneora 6862 1 0 Jul 25 ? 2:49 ora_arc0_CLONE
cloneora 6864 1 0 Jul 25 ? 0:21 ora_arc1_CLONE
clonemgr 6435 6196 1 09:44:02 pts/tb 0:00 grep arc
從Table與Linux來看，有兩個Processes在執行。
原因是參數log_archive_max_processes，它是指定arhcive processes的最大數量。