syssyntable broken up!

We have a problem with ad IDS 2000 9.21.UC2 running on HP-UX 10.20 (PA-RISC,32bits). The syssyntable is broken up and some synonym is actually not droppable nor accessible. We tried "oncheck -cc" but the program gave us about 10 message like the following: Validating syssyntable for database veggia ERROR: No table found for syssynonyms record. ISAM error: no record found. Tabid 610327 Server name Database name Owner Table name Tabid of base table 0 I think this table is not critical for the engine to run (One can have no synonyms at all!); I succeeded in unloading all the table content so I could drop and create back that table, eventually dropping alla synonyms or deleting from systables all rows with tabtype set to "P" (we have only private synonyms). ...but the engine does not permit to drop or rename syssynonyms stating an error #-510 even if I am the informix user. I know the obvious thing to do is create a new database and then put all data from the old to the new one, but this is a very time consuming solution for an apparently so little problem... Any Hint ? Thanks Peter Peter Komanns SINDATA S.p.A. Italia E-Mail: p.komanns@sindata.it