在solaris环境,在11.2.0.4之后(或者Patch 16387058 on top of 11.2.0.3.5),Oracle自动把LGWR进程放到_high_priority_processes中,(不管是单实例还是RAC)。在这之前,需要手工运行priocntl -s FX -m 60 […]
10g的新进程以及not documented进程
昨天在群里面有人问到,10g的rac中 ora_pz99是啥进程,一开始也没查到资料,经朋友指点后,在metalink上找到了答案,原来这是属于not document的10g后台进程。在这里,干脆把10g新增的进程整理一下吧。
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SQL> select * from v$version; BANNER ---------------------------------------------------------------- Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - Prod PL/SQL Release 10.2.0.1.0 - Production CORE 10.2.0.1.0 Production TNS for Linux: Version 10.2.0.1.0 - Production NLSRTL Version 10.2.0.1.0 - Production SQL> !ps -ef |grep ora_ oracle 6296 1 0 Jul23 ? 00:00:07 ora_pmon_devdb1 oracle 6304 1 0 Jul23 ? 00:00:18 ora_diag_devdb1 oracle 6310 1 0 Jul23 ? 00:00:02 ora_psp0_devdb1 oracle 6315 1 0 Jul23 ? 00:01:26 ora_lmon_devdb1 oracle 6317 1 0 Jul23 ? 00:01:41 ora_lmd0_devdb1 oracle 6319 1 1 Jul23 ? 00:03:28 ora_lms0_devdb1 oracle 6329 1 0 Jul23 ? 00:00:01 ora_mman_devdb1 oracle 6331 1 0 Jul23 ? 00:00:07 ora_dbw0_devdb1 oracle 6333 1 0 Jul23 ? 00:00:15 ora_lgwr_devdb1 oracle 6337 1 0 Jul23 ? 00:00:15 ora_ckpt_devdb1 oracle 6341 1 0 Jul23 ? 00:00:13 ora_smon_devdb1 oracle 6351 1 0 Jul23 ? 00:00:00 ora_reco_devdb1 oracle 6359 1 0 Jul23 ? 00:00:33 ora_cjq0_devdb1 oracle 6365 1 0 Jul23 ? 00:00:18 ora_mmon_devdb1 oracle 6370 1 0 Jul23 ? 00:00:11 ora_mmnl_devdb1 oracle 6372 1 0 Jul23 ? 00:00:00 ora_d000_devdb1 oracle 6374 1 0 Jul23 ? 00:00:00 ora_s000_devdb1 oracle 6394 1 0 Jul23 ? 00:00:29 ora_lck0_devdb1 oracle 6422 1 0 Jul23 ? 00:00:01 ora_asmb_devdb1 oracle 6437 1 0 Jul23 ? 00:00:01 ora_rbal_devdb1 oracle 6840 1 0 Jul23 ? 00:00:01 ora_arc0_devdb1 oracle 6842 1 0 Jul23 ? 00:00:03 ora_arc1_devdb1 oracle 6895 1 0 Jul23 ? 00:00:01 ora_qmnc_devdb1 oracle 6916 1 0 Jul23 ? 00:00:00 ora_o003_devdb1 oracle 7065 1 0 Jul23 ? 00:00:00 ora_q001_devdb1 oracle 5327 1 0 Jul23 ? 00:00:30 ora_pz99_devdb1 oracle 16365 1 1 Jul23 ? 00:01:19 ora_j000_devdb1 oracle 23522 1 0 00:58 ? 00:00:00 ora_q002_devdb1 oracle 25680 1 0 01:00 ? 00:00:00 ora_q000_devdb1 oracle 26024 25845 0 01:00 pts/2 00:00:00 /bin/ksh -c ps -ef |grep ora_ oracle 26026 26024 0 01:00 pts/2 00:00:00 grep ora_ SQL> |
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031 study note-oracle的后台进程
oracle的后台进程: (1) db writer(DBWn):将dirty buffer写入数据文件中。启动的时候只有一个DBWn,即DBW0,最多可以有10个(DBW0~DBW9)。参数DB_WRITER_PROCESS可以设置启动的时候DBWn的数量。发生条件:(a)clean buffer […]