Checking processes memory usage

Sometimes your server would have a heavy load because there is one or many processes consuming a lot of memory, and when there is no more physical memory (RAM) available the system begins using virtual memory (swap), and as long as RAM is thousands times faster than normal hard disks you'll notice for sure when your system begins to swap memory. Therefore, if you're a sysadmin or an Oracle DBA running instances in your own AIX server that doesn't run anything else, it would be good to pinpoint the top processes consuming the system's memory in an easy and quick way like this:

myserver> ps auwx|sort -k 5b,5nr|more
USER         PID %CPU %MEM   SZ  RSS    TTY STAT    STIME  TIME COMMAND
oracle   5669038  0.1  2.0 1536176 743136      - A      Jan 21 18:43 oraclemyoradb (LOCAL=NO) 
oracle   4755538  0.0  2.0 1472752 719680      - A      Jan 15 16:44 oraclemyoradb (LOCAL=NO) 
oracle   5922916  0.0  1.0 1463404 518768      - A      Jan 21  9:05 oraclemyoradb (LOCAL=NO) 
oracle   4575476  0.0  2.0 1419100 692160      - A    16:05:55  2:25 oraclemyoradb (LOCAL=NO) 
oracle   2752638  0.0  2.0 1405344 692960      - A      Jan 20 11:35 oraclemyoradb (LOCAL=NO) 
oracle   6070354  0.1  2.0 1338124 736024      - A    16:03:06  5:23 oraclemyoradb (LOCAL=NO) 
oracle   3518588  0.0  2.0 1273420 704220      - A      Jan 20 10:56 oraclemyoradb (LOCAL=NO) 
oracle   5390404  0.1  2.0 1272972 814148      - A      Jan 22 13:47 oraclemyoradb (LOCAL=NO) 
oracle   2371620  0.0  2.0 1259332 685920      - A      Jan 20  7:40 oraclemyoradb (LOCAL=NO) 
oracle   4784328  0.0  2.0 1259024 774984      - A      Jan 20 11:02 oraclemyoradb (LOCAL=NO) 
oracle   5877918  0.1  2.0 1200360 730492      - A      Jan 24  5:12 oraclemyoradb (LOCAL=NO) 
oracle   4374602  0.0  2.0 1193800 771632      - A      Jan 21  9:35 oraclemyoradb (LOCAL=NO) 
oracle   5804038  0.0  2.0 1178616 681944      - A      Jan 20 19:32 oraclemyoradb (LOCAL=NO) 
oracle   4931756  0.3  2.0 1156880 786928      - A    10:58:49  1:45 oraclemyoradb (LOCAL=NO) 
oracle   3100862  0.0  2.0 1146228 664368      - A      Jan 18  6:54 oraclemyoradb (LOCAL=NO) 
oracle   1880168  0.0  2.0 1043492 709820      - A      Jan 20 16:53 oraclemyoradb (LOCAL=NO) 
oracle   3858452  0.0  2.0 1035528 723960      - A      Jan 20 12:24 oraclemyoradb (LOCAL=NO) 
oracle   4050954  0.0  2.0 1027828 678236      - A      Jan 22 10:00 oraclemyoradb (LOCAL=NO) 
oracle   3510290  0.0  2.0 1010724 610948      - A      Jan 14 11:22 oraclemyoradb (LOCAL=NO) 

As you can see, there is a lot of oracle processes related to myoradb database that are consuming too much memory and chocking the system.