Please refer MOS tech note Its relevant:
Failed to get printer info for <printer>: can't connect to spooler for <printer>: No such file or directory (Doc ID 1002791.1)
Also make sure that settings in printer.conf has not been changed after applying patch.
X A H E E R
NO , it didn't helped. we are using CUPS scheduler, any idea on that.
We support CUPS only since Solaris 11.