[root@invoppsqldb03 ~]# cat /var/log/messages | grep postgres
Jul 29 12:16:38 invoppsqldb03 su[3483573]: (to postgres) root on pts/1
Jul 29 17:02:01 invoppsqldb03 kernel: [3483783]    26 3483783  4365039    88416   868352        0             0 postgres
Jul 29 17:02:01 invoppsqldb03 kernel: [3483784]    26 3483784    70372      456   102400        0             0 postgres
Jul 29 17:02:01 invoppsqldb03 kernel: [3483785]    26 3483785  4365205   509161  4251648        0             0 postgres
Jul 29 17:02:01 invoppsqldb03 kernel: [3483786]    26 3483786  4365084    34281   425984        0             0 postgres
Jul 29 17:02:01 invoppsqldb03 kernel: [3483788]    26 3483788  4365039     4620   155648        0             0 postgres
Jul 29 17:02:01 invoppsqldb03 kernel: [3483789]    26 3483789  4365466      812   167936        0             0 postgres
Jul 29 17:02:01 invoppsqldb03 kernel: [3483790]    26 3483790  4365453      745   139264        0             0 postgres
Jul 29 17:02:01 invoppsqldb03 kernel: [3501834]    26 3501834  7454356  3553444 28983296        0             0 postgres
Jul 29 17:02:01 invoppsqldb03 kernel: [3501836]    26 3501836  7251239  3348709 27348992        0             0 postgres
Jul 29 17:02:01 invoppsqldb03 kernel: [3501975]    26 3501975  7362364  3459745 28241920        0             0 postgres
Jul 29 17:02:01 invoppsqldb03 kernel: [3501976]    26 3501976  7322236  3420160 27926528        0             0 postgres
Jul 29 17:02:01 invoppsqldb03 kernel: [3501977]    26 3501977  7466146  3558503 29077504        0             0 postgres
Jul 29 17:02:01 invoppsqldb03 kernel: [3509265]    26 3509265  4674654   765307  6701056        0             0 postgres
Jul 29 17:02:01 invoppsqldb03 kernel: [3510945]    26 3510945  4365738     4521   364544        0             0 postgres
Jul 29 17:02:01 invoppsqldb03 kernel: [3510963]    26 3510963  4366862     5781   372736        0             0 postgres
Jul 29 17:02:01 invoppsqldb03 kernel: [3511025]    26 3511025  4365220     1065   180224        0             0 postgres
Jul 29 17:02:01 invoppsqldb03 kernel: [3511027]    26 3511027  4365476      969   180224        0             0 postgres
Jul 29 17:02:01 invoppsqldb03 kernel: [3511031]    26 3511031  4365114      489   126976        0             0 postgres
Jul 29 17:02:01 invoppsqldb03 kernel: [3511033]    26 3511033  4365363      585   131072        0             0 postgres
Jul 29 17:02:01 invoppsqldb03 kernel: oom-kill:constraint=CONSTRAINT_NONE,nodemask=(null),cpuset=/,mems_allowed=0-1,global_oom,task_memcg=/user.slice/user-0.slice/session-1097.scope,task=postgres,pid=3501977,uid=26
Jul 29 17:02:01 invoppsqldb03 kernel: Out of memory: Killed process 3501977 (postgres) total-vm:29864584kB, anon-rss:12379920kB, file-rss:12kB, shmem-rss:1854080kB, UID:26 pgtables:28396kB oom_score_adj:0