wade@hobbes.ucsd.edu (Wade Blomgren) (01/17/91)
System: Sun 4, SunOS 4.0.3, Ingres release 6.3 patch level 1
We converted from Ingres release 5 to release 6 some number of months
ago. At that time we converted the dbdb to iidbdb and converted
some of our production databases. Other production databases remained
under release 5 pending porting of code by the programmers of applications
for those databases. Things have been working OK, however:
In the meantime, the iidbdb under release 6 has had to be rebuilt a few
times due to destructive failures of the journaling system under release
6 and subsequent ad-hoc recoveries (which is another story... let's just
say we aren't journaling any more).
So...now we need to convert some more release 5 databases. Unfortunately the
conversion fails because the release 6 iidbdb doesn't know about the
release 5 databases (since iidbdb was rebuilt after the original conversion.)
The solution according to the conversion guide is to run "cvsync" to indicate
to the release 6 iidbdb the presence of the "new" release 5 databases.
Unfortunately cvsync dumps core when run ("Memory Fault").
So the questions are these: has anyone successfully used cvsync on a Sun4?
And if not, what might the solution be? My current thought is to blow away
the current iidbdb, temporarily orphaning the current release 6 databases,
then convert the current release 5 dbdb, then run finddbs to collect the
release 6 databases, and try converting the release 5 databases again. What
do you think? (I'd like to know what ingres tech support thinks too, but
I'm still waiting for the call back and when it comes I expect I will probably
still be mired in the preliminary levels of the support people, who normally
don't know much about this sort of thing.)
Wade Blomgren
UCSD Instructional Computing Center
wade@hobbes.ucsd.edu