Down SUN Cluster all node

#scshutdown –y –g 0

command to shutdown all cluster nodes to OK prompt

save collect log to USB flash disk

XSCF>snapshot -d usb0   

Sun cluster add mountpoint more 256 character

on sun cluster if you add mountpoint by #clsetup
you can not add more 256 character to mountpoint but you can save it by
#clresource set -p FilesystemMountPoints="(any old mountpoint),(new mount point ) " Resource-name
Ex:
#clresource set -p FilesystemMountPoints="/oradata1/database1,/oradata2/database1,/oradata20/database1 " database1-rs

then:
/oradata20/database1 is a new mountpoint
database1-rs is resource name
.....

Find WWN on Linux

# systool -c fc_host -v
# systool -c fc_transport -v

stop-start sendmail on AIX

1. Verify if sendmail is running. “ps -ef | grep sendmail“.
2. Stop sendmail. “stopsrc -s sendmail”
3. Verify if sendmail is running. “ps -ef | grep sendmail“.
No process should be returned.
4. Start sendmail. “startsrc -s sendmail -a “-bd -q30m”“.
-bd will start the sendmail as a SMTP mail relay router.
-q will the the interval in which the sendmail daemon will process save messages. If none is provided the daemon will default to instant processing.
5. Verify if sendmail is running. “ps -ef | grep sendmail“.

mirror witch not cylinder 0

If you have a mirrored file system in which the first submirror attached does not start on cylinder 0, all additional submirrors you attach must also not start on cylinder 0. If you attempt to attach a submirror starting on cylinder 0 to a mirror in which the original submirror does not start on cylinder 0, the following error message displays ==>

: can't attach labeled submirror to an unlabeled mirror
..
..

Force DCPROMO

if cannot demote (dcpromo) you can use
dcpromo /Forceremoval
and next you must manual remove from AD