The GUI package manager is called “swmgr”.
The GUI Printer tool is called “printers”. (funnily enough, but I always expect it to be called lpadmin or prntconfsupergui or something)
uname -R will tell you the OS patchlevel / revision number. E.g. 6.5.13f

File Descriptor Limits

Change the following lines /var/sysgen/stune :

rlimit_nofile_cur=
rlimit_nofile_max=

Then on login, run ulimit -n 2048 (or whatever you want the limit to be, upto the hard limit).

Kernel Tunables for Oracle

Populate /var/sysgen/stune with the following and then reboot.

rlimit_rss_max  = 1073741824 ll
rlimit_rss_cur  = 1073741824 ll
ipforwarding    = 0
restricted_chown        = 1
semmns  = 2048
semmni  = 100
semmsl  = 25
rlimit_nofile_cur = 4096
rlimit_nofile_max = 8192