Hi,

I'm using Firebird SS 1.5.5 (default settings) on Windows Server 2003 R2
PL Standard Edition with SP2. HP Proliant DL180 G5 with Intel Xeon E5420
and 4 GB RAM, RAID 1+0 on SmartArray P400.

I'm using 5 database and on every database I set Page Buffers to maximum
65535. So it's 65535 * 8k (page size) = 512 MB for each database. It's
look like I need 2560 MB for all database witch gave me some margin for
sorting and others operation.

Bud when I try to connect to this databases I get error "internal gds
software consistency check (cannot start thread)". In firebird log i see:

SYDELSERVER (Server) Wed Jul 30 13:03:04 2008
Database: D:\SYDEL\DANE\BAZYT\TURZADZENIA.FDB
Allocated 13101 page buffers of 32767 requested

SYDELSERVER (Server) Wed Jul 30 13:03:04 2008
Database: D:\SYDEL\DANE\BAZYT\TURZADZENIA.FDB
internal gds software consistency check (cannot start thread)

It's looks like firebird can't allocate more than 2GB of RAM. When I
decrease Page Buffers to lower values so my fb memory usage is below 2GB
every thing look fine bud sometimes I get error that I have not enough
memory for sort operation but I see that I have at least 1,5 GB free RAM
and a lot of disc space.

I switch to firebird 2.1.1.17910 and I had the same problem.

I try to keep pages in memory (as more as I can) because disc operation
is my only bottleneck.

What could be the reason of this behavior ? Any help appreciated.

Regards,
Grzegorz