7.22 temporary TBLspace problem

I'm receving the following error recently, when performing the engine shutdown and restart. 19:14:41 Dropping temporary TBLspace 30015b, recovering 8 pages. 19:14:41 Dropping temporary TBLspace 30015c, recovering 8 pages. 19:14:41 Dropping temporary TBLspace 30015d, recovering 8 pages. 19:14:41 Assert Failed: WARNING! Errors occurred while cleaning dbspace 'datadbs informix' 19:14:41 Who: Session(1, informix@j30, 0, 1074110484) Thread(8, main_loop(), 40038014, 3) 19:14:41 Results: Unused temp tables and/or deferred indexes may remain 19:14:41 Action: Cleanup will be reattempted during next initialization 19:14:41 See Also: /tmp/af.888a0 19:56:13 Assert Failed: WARNING! pthdrpage:ptalloc:bad partn page 19:56:13 Who: Session(16, informix@foobar, 100270, 1074112236) Thread(41, oncheck, 40039d9c, 1) 19:56:13 Results: Cannot use TBLSpace page for TBLSpace 3146019 19:56:13 Action: Run 'oncheck -pt 3146019' 19:56:13 See Also: /tmp/af.29925d So I follow the oncheck -pt <id> and still the same error. This is on IBM AIX v4 platform. Anyone knows how it may be cure and prevent? Thanks. Chris