I started getting this error recently:
internal gds software consistency check (CCH_precedence: block marked
(212), file: cch.cpp line: 3640)

Sometimes I also get "Deadlock" messages that follow the GDS:

PDD-STAN (Server) Fri Apr 06 11:37:33 2007
Database: db
internal gds software consistency check (CCH_precedence: block marked
(212), file: cch.cpp line: 3640)


PDD-STAN (Server) Fri Apr 06 11:39:33 2007
Database: db
deadlock


PDD-STAN (Server) Fri Apr 06 11:39:33 2007
Database: db
deadlock


PDD-STAN (Server) Fri Apr 06 11:39:33 2007
Database: db
deadlock

Does anyone know what could be the cause?

I understand that I have "deadlocks" but I am
handling them in the client code. I commit the
current transaction, start a new one, and retry my
queries. I am using default transaction parameters.

This happens under load (75+ concurrent connections)
All connections are doing selects and inserts using
stored procedures. No schema modifications.

I tried all the different GCPolicies (background, cooperative and
combined) This does not seem to effect this problem.

fbclient.dll (from the FB 2.0.1 release for the client code)
FB 2.0.1 SS
Windows XP SP2
Athlon X2 4400
2GB RAM

thanks,

stan