Patch requires reboot or not ?? How to verify ??

You can verify a patch's reboot requirement with below command:

# swlist -d -l fileset -a is_reboot *.*,c=patch @ /tmp/depot | grep true

Here i consider that /tmp/patch is my depot path.

You want manual reboot after install the patch ? then follow below steps

If a patch requires a reboot AND you do not want the system to reboot automatically
at the end of the swinstall THEN you set autoreboot=false though you must then reboot manually later.

#swinstall -x autoreboot=false -s /tmp/depot