Hey hmaiida,
High paging faults is known as thrashing in UNIX enviroments and it's not a normal situation at all. In AIX there are some parameters you can set in order to prevent this behavior. Parameters like maxperm|minperm|maxclient in order to free real memory for specific use of file pages.
Before you go tuning anything, call IBM's AIX Support and talk to them regarding this.
Do post the output of below commands:-
Code:
#lsps -a
#vmo -a | egrep "maxperm|minperm|maxclient"
And by the way whats your real memory size?