Edward,
I have something similar at only one site. They get transaction already
started error. And only they do. I have gone through the code several
times - every query is try/finally and try/except bracketed and all
transaction starts/commits/rollbacks are correct.
It just occurs to me that if the sql server uses tcpip (which firebird
does and I am using firebird) then it could be windows dropping the
tcpip transactions. I know it is stupid in many other situations where
it clears the stack. I suppose this could also happen due to window
updates.
As John says, closing the query prior to use may be the answer. I dont
like the idea myself, but I may have to do rollback before start :-(
On 21/02/2011 8:54 p.m., Edward Huang wrote:
Hi,
I'm having a strange error recently. We have a program that has been
running on a Win2003 server for a long time, and suddenly from last
week it comes up 'Object was open' errors.
Typically, the program uses 2 TADOQuery, one will select/Edit/Post,
another one with an 'Insert into xxx' query, both pointing to a same
SQL Server 2005 table. The pattern appears on many places.
Disregard the nicety of the logic, it has been done that way for over
5 years, first on Win 2000 server with SQL Server 2000, and later on
Win 2003 server with SQL Server 2005, and was all fine, until about a
week ago.
I have tried Google, but couldn't really find any useful link to my
situation, although there are lots of link to the same error. I'm
suspecting some kind of OS patch or such which changed behaviour of
ADO or MDAC or SQL Server.
Anyone has a suggestion to my situation? I'm not keen on changing all
the code to use different logic, as it would require fair amount of
coding and testing.
Thanks,
Edward
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