[Zope] Database adapter connections

[Michal Bukovjan]

This is a cryptographically signed message in MIME format.

--------------ms020901010904060507020904
Content-Type: text/plain; charset=ISO-8859-2; format=flowed
Content-Transfer-Encoding: 7bit

Hello,

I have a database adapter, Level3 (inheriting from Shared.DC.ZRDB.TM).
All documentation I have found claims that such an adapter should be 
able to open multiple connections to the database, I see always one though.

What am I missing?

More detail : ----------------------
I have a folder, a database connection object, ZSQL method and a DTML 
document, that renders the ZSQL method.
Zope is running in 12 threads.
I call the DTML document from 8 simultaneous clients, the DTML document 
however renders one at a time (it takes a while to render), apparently 
serialized by the database access.
There is only one (!) physical connection to the database, I would 
expect at least 8.
How do I speed things up?

I looked at DCOracle2DA as reference, cannot see a difference.

Thanks for any hint,

Michal Bukovjan


--------------ms020901010904060507020904
Content-Type: application/x-pkcs7-signature; name="smime.p7s"
Content-Transfer-Encoding: base64
Content-Disposition: attachment; filename="smime.p7s"
Content-Description: S/MIME Cryptographic Signature
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--------------ms020901010904060507020904--