Hi,
I'm pretty sure the sysmaster database is created in rootdbs & your rootdbs
may not be big enough.
Please check your $INFORMIXDIR/etc/onconfig file, what is the size of
ROOTSIZE?
I have no problems with ROOTSIZE = 120000, which is 30000 pages on an AIX box with 4k pages, and less that 2000 pages are in use.