How to check if AIX fileset requires reboot or not

Go the location where the fileset is copied and run below command and see the last second column(Q -->Quiescent  column )and if u find b/B->bosboot (reboot required) and
apart from that others dont require reboot.

root@host::/export/lpp_source/AIX71/lppsource_71-01-04/installp/ppc> installp -l -d  .|grep -i  bos.rte.boot
  bos.rte.boot                7.1.1.15                   S  b usr,root ->This requires reboot as it has "b"


Other values of Q -->Quiescent  column

 Y indicates that running processes can be affected by the installation of this fileset.
 N indicates that running processes are not affected by the installation of this fileset.
 B indicates bosboot and quiescent.
 b indicates bosboot and not quiescent.