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Use PS command to view Oracle-related processes under Linux

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You can use the PS command to view Oracle-related processes under Linux

Oracle Listener

This command lists the processes of the Oracle Net Listener

  2. [Email protected] www.linuxidc.com ~]$ Ps-ef | grep Tnslsnr
  4. Oracle 1999 29986 0 09:47 pts/2 00:00:00 grep Tnslsnr
  6. Oracle 3647 1 0 Jul03? 00:00:34/u01/oracle/mc3yd213/db/tech_st/11.1.0/bin/tnslsnr Mc3yd213-inherit
  8. Oracle 6431 1 0 Jul03? 00:00:00/u01/oracle/mc3yd213/apps/tech_st/10.1.2/bin/tnslsnr Apps_mc3yd213-inherit
  10. Oracle 13616 1 0 May27? 00:00:40/u01/oracle/mc3yd213/apps/tech_st/10.1.2/bin/tnslsnr Listener-inherit
  12. [Email protected] www.linuxidc.com ~]$

Oracle Background Process
  2. [Email protected] www.linuxidc.com ~]$ Ps-ef | Grep-i "Ora_"
  4. Oracle 1887 1 0 09:42? 00:00:00 ora_w000_mc3yd213
  6. Oracle 2159 1 0 09:54? 00:00:00 ora_j000_mc3yd213
  8. Oracle 2167 29986 0 09:55 pts/2 00:00:00 grep-i Ora_
  10. Oracle 3516 1 0 Jul03? 00:02:00 ora_pmon_mc3yd213
  12. Oracle 3518 1 0 Jul03? 00:02:08 ora_vktm_mc3yd213
  14. Oracle 3522 1 0 Jul03? 00:00:27 ora_diag_mc3yd213
  16. Oracle 3524 1 0 Jul03? 00:00:18 ora_dbrm_mc3yd213
  18. Oracle 3526 1 0 Jul03? 00:00:35 ora_psp0_mc3yd213
  20. Oracle 3528 1 0 Jul03? 00:05:59 ora_dia0_mc3yd213
  22. Oracle 3530 1 0 Jul03? 00:00:19 ora_mman_mc3yd213
  24. Oracle 3532 1 0 Jul03? 00:01:06 ora_dbw0_mc3yd213
  26. Oracle 3534 1 0 Jul03? 00:02:53 ora_lgwr_mc3yd213
  28. Oracle 3536 1 0 Jul03? 00:02:08 ora_ckpt_mc3yd213
  30. Oracle 3538 1 0 Jul03? 00:01:36 ora_smon_mc3yd213
  32. Oracle 3540 1 0 Jul03? 00:00:06 ora_reco_mc3yd213
  34. Oracle 3542 1 0 Jul03? 00:02:01 ora_mmon_mc3yd213
  36. Oracle 3544 1 0 Jul03? 00:03:20 ora_mmnl_mc3yd213
  38. Oracle 3564 1 0 Jul03? 00:00:09 ora_fbda_mc3yd213
  40. Oracle 3569 1 0 Jul03? 00:00:16 ora_qmnc_mc3yd213
  42. Oracle 3584 1 0 Jul03? 00:00:36 ora_q000_mc3yd213
  44. Oracle 3586 1 0 Jul03? 00:00:15 ora_q001_mc3yd213
  46. Oracle 3690 1 0 Jul03? 00:02:30 ora_cjq0_mc3yd213
  48. Oracle 3707 1 0 Jul03? 00:00:28 ora_smco_mc3yd213
  50. Oracle 7676 1 0 Jul03? 00:42:49 ora_m000_mc3yd213
  52. [Email protected] www.linuxidc.com ~]$

eg.ora_pmon_mc3yd213 is Pmon process,Pmon (Process MONitor) is a Oracle background process created when you star t a database instance. The Pmon process would free up resources if a user process fails (eg. release database locks).

These background processes, from the database can also be found, you can use the SQL below to check the background process, in the program column, you can see SMON,MMON,CKPT,PMON,MMAN,MMNL ... Background process

    1. Select * from v$session WHERE type =' BACKGROUND ';

For background processes, refer to Oracle Background processes

Oracle Management Agent
      1. [[email protected] Www.linuxidc.com ~]$ ps -ef | grep  emagent  
      2. oracle    2097 29986  0 09:51  pts/2    00:00:00 grep emagent  
      3. 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  
      4. Oraem      3150  3130  0 May24 ?         00:25:56 /opt/oracle/oraem/agent10g/bin/emagent  
      5. [ [email protected] www.linuxidc.com ~]$ 

Using the PS command under Linux to view Oracle-related processes

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