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Thread Performance problem in multi-user mode
Tue, Jan 20 2015 4:29 AMPermanent Link

Thomas Brade

Hi,

we are programming with delphi 2010.
In our old program version we used paradox tables
and Borland Database Engine (BDE 5.01).
In our new program version we are using DBISAM 4.38.

We have a problem:
Multi-user performance on a network drops when a
second client accesses the data.

In our old program version (BDE) we solved the problem
by setting BDE-Parameters:
  LOCAL SHARE:    TRUE
  MAXBUFSIZE:    32768
  MAXFILEHANDLES:    2048
  MEMSIZE:    128
  MINBUFSIZE:    2048
  SHAREDMEMLOCATION: 0x5BDE
  SHAREDMEMSIZE:    32768

In our new program version (DBISAM) we still have the problem.

We are beginners with dbisam, can anyone help us to solve the problem?

Regards
Burkhard
Tue, Jan 20 2015 8:20 AMPermanent Link

Roy Lambert

NLH Associates

Team Elevate Team Elevate

Burkhard


AFAIK there isn't a way to fix it using file/server. The problem is down to Windows and oplocks, and there have been a lot of posts about it. What may work is moving over to client/server

Roy Lambert
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