Hi all...

Berkeley 4.4.16 compiled with VC7.1, WinXP

I have encountered a problem while iterating over my database(size
about 765M, more than 760k records).
I am using cursor as the Using Cursors example in C++ Getting Started,
like this:

featureDb->cursor(NULL, &cursorp, 0);
while ((ret = cursorp->get(&key, &data, DB_PREV)) == 0)
{
...........
}

This only have iterated 9089 records and then get stop at cursorp->get,
and only 19567 records while replaced DB_PREV with DB_NEXT. It seems
that cursorp->get has falled into a dead loop.

can anyone tell me why?

Hi Jerry,

What do you mean by "then get stop at cursorp->get". Does the call
return a non-zero error code, and if so, which one?

If the call does not return, can you get a stack trace with a debugger?
It could be blocked on a lock, if there is some concurrent activity,
or if some earlier operation was not completed (so that locks are still
being held by an old cursor or transaction).

Regards,
Michael.

Thanks Michael.

I meant "cursorp->get" does not return. I was using the release
version of dll and lib, so I could not step into the "get" function.
There has no concurrent user to access my database. I simply opened the
Env and Db, and then tried to iterate over all records. But failed.

Hi Jerry,

Does the same code fail if you first run the db_recover utility in the
environment directory?

Regards,
Michael.

I rebuild the database and the same code run.

Thanks for your helps.