> We are now running into bottlenecks and we would like to implement connection 
>pooling using ODBC. 

What exactly are your bottlenecks? Number of concurrent connections, 
connection timouts?

> Is Sap DB compatible with other products (e.g. SQLRelay,  unixODBC)
>> which (claim) to provide these facilities?
> 
> 
> SAP DB works with unixODBC, once you've got your odbcinst.ini file 
> correctly and made a symlink from /var/spool/sql/ini/odbc.ini to the 
> real location of this file on any Linux system, that is /etc/odbc.ini.

SAP DB should work with e.g. unixODBC connection pooling. Unfortunatly, 
connection pooling
works only on a per process basis, you can't share connections between 
processes.
Since Apache 1.3 is a multi process webserver connection pooling won't work 
as expected:
You'd have a connection pool for each and every apache process. The only 
situation where this would make sense is when your connection overhead to 
the database is large - you would setup a connection pool with a maximum of 
one connection that gets reused. The downside would be that the total number 
of concurrent connections to the database would raise and be at max equal to 
the number of Apache Server processes running.

Without investigating the reason for your bottleneck, I doubt connection 
pooling will buy you anything.

-Andreas
-- 
Andreas Karajannis
mediaworx berlin  AG

Fon (0 30) 2 75 80 - 266
Fax (0 30) 2 75 80 - 200


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