Edit report at https://bugs.php.net/bug.php?id=22986&edit=1
ID: 22986
Updated by: kalle@php.net
Reported by: ray at unreal64 dot net
Summary: Unhappily 'conection cache' handling
-Status: Open
+Status: Analyzed
-Type: Feature/Change Request
+Type: Bug
Package: ODBC related
Operating System: Windows NT4.0
PHP Version: 4.x
Block user comment: N
Private report: N
New Comment:
I would argue that this is more a bug, gonna re-classify it as such as by looking at the code of
ext/odbc it still seems to be present today
Previous Comments:
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[2003-05-18 22:31:01] kalowsky@php.net
Updating the verison since this effects ALL PHP4 installations. Hopefully this won't be the
case with 5 if I can get things done :)
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[2003-05-18 22:30:15] kalowsky@php.net
Yes yes, this is on my TODO list. In fact it's kind of working already, I just haven't
commited any code. Moving this from a bug to a feature request, because it's not really a bug.
You are correct though that you can change the password/user to get around this, but an even easier
solution is to change the cursor type.
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[2003-04-24 01:16:59] ray at unreal64 dot net
I didn't try binaries, but I looked on current sources and checked changes on ODBC files.
I didn't find anything in php_odbc.c (odbc_do_connect) which solves cache problem. I expected
adding connection 'flag' or 'odbc_connect_nocache' or something.
Still there is 'connection' handling which setups hash array and ALWAYS search array and
reuse connections. It causes problems with transactions and more physical connections.
Let me know, if I missed something :)
R.
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[2003-03-31 11:57:46] why at email dot address dot com
Pgsql solves this trouble by 'connection flags' and PGSQL_CONNECT_FORCE_NEW.
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[2003-03-31 11:51:22] ray at unreal64 dot net
Hi !
ODBC function "odbc_do_connect" caches connection. It setup "hashed_details"
variable and tries to reuse physical DB connection if new PHP connection is being created.
It brings BIG problem while creating more complicated things. Imagine, you have some long server
side action over database running in transaction (allready get point ? :) Thin client need to show
procedure progress. Details are not important, but client 'shows' progress bar. So, inside
'big' server side action, need to be updated 'progress' table which is used by
another HTTP request to show real progress to user (action can take tenths seconds).
So, if I need to open 2 separate connections, I am in the trouble. Ofcourse, the same user, the same
password, the same cursor type. I think it is ugly to create separate user do to this :) [even it is
temporary solcution ofcourse]
So, I suggest to add parameter to PHP's odbc_connect/pconnect - something like "I am not
soo stupid as I look and I really need 2 connections" or add 'flag' to 'cursor
type' (and declare this last parameter as 'connection flags' rather 'cursor
type') - something like SQL_FLG_NO_CONN_CACHE.
Would be nice feature :) If it is 'someway' possible, please, let me know. I didn't
find how.
Thank you,
Have a niceday
Ray
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Edit this bug report at https://bugs.php.net/bug.php?id=22986&edit=1