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Paradox Lock Files...

Posted on 2001-06-25
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Last Modified: 2007-12-19
Hi Guys,
   Does anyone know how I can find out how many locks paradox has at any one time?

I think there is a 64 limit or something.  I would like to check the count so I can see what portion of some code (rather crap code) is locking more tables.

Cheers
Woody.
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Question by:WoodyJ007
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Accepted Solution

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kretzschmar earned 100 total points
ID: 6224482
just found this, at borland, and somewhere i have a sample too

BDE API Examples (DbiOpenLockList)
Creates an in-memory table containing a list of locks acquired on the table.
--------------------------------------------------------------------------------

Return a list of locks acquired on a specific table:

This example is included with Delphi in the BDE32.HLP file.


meikl ;-)
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LVL 27

Expert Comment

by:kretzschmar
ID: 6224724
from the mentioned helpfile, don't forget to add the bde-unit into the uses clause

Return a list of locks acquired on a specific table.

This example uses the following input:

  fDbiOpenLockList(Table1, LockList);

The procedure is:

procedure fDbiOpenLockList(Tbl: TTable; var LockList: TStringList);

var
  TmpCursor: hdbicur;
  Lock: LOCKDesc;
  rslt: dbiResult;
begin
  Check(DbiOpenLockList(Tbl.handle, True, True, TmpCursor));
  Check(DbiSetToBegin(TmpCursor));
  LockList.Clear;
  repeat
    rslt:= DbiGetNextRecord(TmpCursor, dbiNOLOCK, @Lock, nil);
    if (rslt <> DBIERR_EOF) then begin
      LockList.Add('Lock Type: ' + IntToStr(Lock.iType));
      LockList.Add('User Name: ' + StrPas(Lock.szUserName));
      LockList.Add('Net Session: ' + IntToStr (Lock.iNetSession));

      LockList.Add('Session: ' + IntToStr (Lock.iSession));
      LockList.Add('Record Number: ' + IntToStr (Lock.iRecNum));
    end;
  until (rslt <> DBIERR_NONE);
  Check(DbiCloseCursor(TmpCursor));
end;
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LVL 27

Expert Comment

by:kretzschmar
ID: 6225390
about the limt, it depends on the paradoxversion but is about 1024 for one table
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Author Comment

by:WoodyJ007
ID: 6226759
Just the job.

I was trying to close this yesterday but the EE server was down for ages!

Cheers
Woody.
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