Oracle是很多開發人員所使用的數據庫之一，與Oracle相關的進程也非常多，我們平時就可以通過ps命令來查看這些相關的進程。
具體方法如下：
Oracle Listener
這個命令會列出Oracle Net Listener的進程
[oracle@ www.linuxidc.com ~]$ ps -ef | grep tnslsnr
oracle 1999 29986 0 09:47 pts/2 00:00:00 grep tnslsnr
oracle 3647 1 0 Jul03 ? 00:00:34 /u01/oracle/mc3yd213/db/tech_st/11.1.0/bin/tnslsnr mc3yd213 -inherit
oracle 6431 1 0 Jul03 ? 00:00:00 /u01/oracle/mc3yd213/apps/tech_st/10.1.2/bin/tnslsnr APPS_mc3yd213 -inherit
oracle 13616 1 0 May27 ? 00:00:40 /u01/oracle/mc3yd213/apps/tech_st/10.1.2/bin/tnslsnr LISTENER -inherit
[oracle@ www.linuxidc.com ~]$
Oracle Background Process
[oracle@ www.linuxidc.com ~]$ ps -ef | grep -i "ora_"
oracle 1887 1 0 09:42 ? 00:00:00 ora_w000_mc3yd213
oracle 2159 1 0 09:54 ? 00:00:00 ora_j000_mc3yd213
oracle 2167 29986 0 09:55 pts/2 00:00:00 grep -i ora_
oracle 3516 1 0 Jul03 ? 00:02:00 ora_pmon_mc3yd213
oracle 3518 1 0 Jul03 ? 00:02:08 ora_vktm_mc3yd213
oracle 3522 1 0 Jul03 ? 00:00:27 ora_diag_mc3yd213
oracle 3524 1 0 Jul03 ? 00:00:18 ora_dbrm_mc3yd213
oracle 3526 1 0 Jul03 ? 00:00:35 ora_psp0_mc3yd213
oracle 3528 1 0 Jul03 ? 00:05:59 ora_dia0_mc3yd213
oracle 3530 1 0 Jul03 ? 00:00:19 ora_mman_mc3yd213
oracle 3532 1 0 Jul03 ? 00:01:06 ora_dbw0_mc3yd213
oracle 3534 1 0 Jul03 ? 00:02:53 ora_lgwr_mc3yd213
oracle 3536 1 0 Jul03 ? 00:02:08 ora_ckpt_mc3yd213
oracle 3538 1 0 Jul03 ? 00:01:36 ora_smon_mc3yd213
oracle 3540 1 0 Jul03 ? 00:00:06 ora_reco_mc3yd213
oracle 3542 1 0 Jul03 ? 00:02:01 ora_mmon_mc3yd213
oracle 3544 1 0 Jul03 ? 00:03:20 ora_mmnl_mc3yd213
oracle 3564 1 0 Jul03 ? 00:00:09 ora_fbda_mc3yd213
oracle 3569 1 0 Jul03 ? 00:00:16 ora_qmnc_mc3yd213
oracle 3584 1 0 Jul03 ? 00:00:36 ora_q000_mc3yd213
oracle 3586 1 0 Jul03 ? 00:00:15 ora_q001_mc3yd213
oracle 3690 1 0 Jul03 ? 00:02:30 ora_cjq0_mc3yd213
oracle 3707 1 0 Jul03 ? 00:00:28 ora_smco_mc3yd213
oracle 7676 1 0 Jul03 ? 00:42:49 ora_m000_mc3yd213
[oracle@ www.xitongzhijia.net~]$
eg.ora_pmon_mc3yd213 is PMON process,PMON (Process MONitor) is an Oracle background process created when you start a database instance. The PMON process will free up resources if a user process fails (eg. release database locks).
這些後台進程，從數據庫裡也是能查到的，可以使用下邊這個SQL來查後台進程，在program列中，你就能看到SMON,MMON,CKPT,PMON,MMAN,MMNL...後台進程
select * FROM v$session WHERE type ='BACKGROUND';
Oracle Management Agent
[oracle@ www.linuxidc.com ~]$ ps -ef | grep emagent
oracle 2097 29986 0 09:51 pts/2 00:00:00 grep emagent
oraem 3130 1 0 May24 ? 00:08:57 /opt/oracle/oraem/agent10g/perl/bin/perl /opt/oracle/oraem/agent10g/bin/emwd.pl agent /opt/oracle/oraem/agent10g/sysman/log/emagent.nohup
oraem 3150 3130 0 May24 ? 00:25:56 /opt/oracle/oraem/agent10g/bin/emagent
[oracle@ www.xitongzhijia.net ~]$
以上就是Linux通過ps命令查看Oracle相關進程的方法了，常常需要查找這些進程的友友們，就趕緊收藏本教程吧，定能大大提高你的操作速度。
