下面我们就来演示下相关操作:
[maclean@rh2 ~]$ ps -ef|grep ora_|grep -v grep
maclean 7281 1 0 16:35 00:00:00 ora_pmon_PROD
maclean 7283 1 0 16:35 00:00:00 ora_psp0_PROD
maclean 7285 1 0 16:35 00:00:00 ora_mman_PROD
maclean 7287 1 0 16:35 00:00:00 ora_dbw0_PROD
maclean 7289 1 0 16:35 00:00:00 ora_lgwr_PROD
maclean 7291 1 0 16:35 00:00:00 ora_ckpt_PROD
maclean 7293 1 0 16:35 00:00:00 ora_smon_PROD
maclean 7295 1 0 16:35 00:00:00 ora_reco_PROD
maclean 7297 1 0 16:35 00:00:00 ora_cjq0_PROD
maclean 7299 1 0 16:35 00:00:00 ora_mmon_PROD
maclean 7301 1 0 16:35 00:00:00 ora_mmnl_PROD
maclean 7303 1 0 16:35 00:00:00 ora_d000_PROD
maclean 7305 1 0 16:35 00:00:00 ora_s000_PROD
maclean 7313 1 0 16:35 00:00:00 ora_qmnc_PROD
maclean 7430 1 0 16:35 00:00:00 ora_q000_PROD
maclean 7438 1 0 16:36 00:00:00 ora_q001_PROD
/* lgwr是著名的Oracle后台进程，在这个启动的实例中其系统进程号为7289*/
[maclean@rh2 ~]$ ls -l /proc/7289/fd /* linux上的proc文件系统可以很方便我们探测进程信息*/
total 0
lr-x------ 1 maclean oinstall 64 Jul 26 16:38 0 -> /dev/null
lr-x------ 1 maclean oinstall 64 Jul 26 16:38 1 -> /dev/null
lr-x------ 1 maclean oinstall 64 Jul 26 16:38 10 -> /dev/zero
lr-x------ 1 maclean oinstall 64 Jul 26 16:38 11 -> /dev/zero
lr-x------ 1 maclean oinstall 64 Jul 26 16:38 12 -> /s01/rac10g/rdbms/mesg/oraus.msb
lrwx------ 1 maclean oinstall 64 Jul 26 16:38 13 -> /s01/rac10g/dbs/hc_PROD.dat
lrwx------ 1 maclean oinstall 64 Jul 26 16:38 14 -> /s01/rac10g/dbs/lkPROD
lrwx------ 1 maclean oinstall 64 Jul 26 16:38 15 -> /s01/rac10g/oradata/PROD/controlfile/o1_mf_64q6xphj_.ctl
lrwx------ 1 maclean oinstall 64 Jul 26 16:38 16 -> /s01/rac10g/flash_recovery_area/PROD/controlfile/o1_mf_64q6xpms_.ctl
lrwx------ 1 maclean oinstall 64 Jul 26 16:38 17 -> /s01/rac10g/oradata/PROD/onlinelog/o1_mf_1_64q6xrsr_.log
lrwx------ 1 maclean oinstall 64 Jul 26 16:38 18 -> /s01/rac10g/flash_recovery_area/PROD/onlinelog/o1_mf_1_64q6xsoy_.log
lrwx------ 1 maclean oinstall 64 Jul 26 16:38 19 -> /s01/rac10g/oradata/PROD/onlinelog/o1_mf_2_64q6xths_.log
l-wx------ 1 maclean oinstall 64 Jul 26 16:38 2 -> /s01/rac10g/admin/PROD/bdump/prod_lgwr_7289.trc
lrwx------ 1 maclean oinstall 64 Jul 26 16:38 20 -> /s01/rac10g/flash_recovery_area/PROD/onlinelog/o1_mf_2_64q6xv9o_.log
lrwx------ 1 maclean oinstall 64 Jul 26 16:38 21 -> /s01/rac10g/oradata/PROD/onlinelog/o1_mf_3_64q6xw1b_.log
lrwx------ 1 maclean oinstall 64 Jul 26 16:38 22 -> /s01/rac10g/flash_recovery_area/PROD/onlinelog/o1_mf_3_64q6xwv0_.log
lrwx------ 1 maclean oinstall 64 Jul 26 16:38 23 -> /s01/rac10g/oradata/PROD/datafile/o1_mf_system_64q6wd5j_.dbf
lrwx------ 1 maclean oinstall 64 Jul 26 16:38 24 -> /s01/rac10g/oradata/PROD/datafile/o1_mf_undotbs1_64q6wd7f_.dbf
lrwx------ 1 maclean oinstall 64 Jul 26 16:38 25 -> /s01/rac10g/oradata/PROD/datafile/o1_mf_sysaux_64q6wd5m_.dbf
lrwx------ 1 maclean oinstall 64 Jul 26 16:38 26 -> /s01/rac10g/oradata/PROD/datafile/o1_mf_users_64q6wd89_.dbf
lrwx------ 1 maclean oinstall 64 Jul 26 16:38 27 -> /s01/rac10g/oradata/PROD/datafile/o1_mf_temp_64q6xyox_.tmp
lr-x------ 1 maclean oinstall 64 Jul 26 16:38 28 -> /s01/rac10g/rdbms/mesg/oraus.msb
lr-x------ 1 maclean oinstall 64 Jul 26 16:38 3 -> /dev/null