error: "sqlcreatetls" while accessing database

Hello,

i have a strange behaviour with our SAP-DB:
when we have a lot of requests on the database in a batch then after around
1000 Requests we get an error:

sqlcreatetls [not enough memory...]

I found an entry in the maling list archive from December 2002:
http://listserv.sap.com/pipermail/sapdb.general/2002-December/016285.html

But it sadly doesn't explain when and why the error occures and how you can
solve it :-(
Does anyone have had the same problem and new insights on it?

Greetings
Florian Schmidt