MartyConnelly
martyconnelly at shaw.ca
Thu Jan 27 15:22:02 CST 2005
You need to be registered twice to get access second as IBM Developer partner what a rigamarole. http://www-1.ibm.com/support/docview.wss?uid=swg21079970 ADO Connection String for using the Informix OLEDB Provider Programs that use the Microsoft ActiveX Data Object (ADO) library require a connection string to connect to IBM Informix databases. Here is the proper connection string format to use when you want to connect through the IBM Informix OLEDB Provider. Tom Bolton wrote: >Mark (and Jim) > >Sorry for the delay, had a bit on yesterday. There are indeed ADO/OLEDB >drivers for Informix, a colleague has installed one but is having a little >difficulty with the connection string. Try http://www.connectionstrings.com > > >Mark - instead of using APPEND queries, would it not be any faster to pull >the data from Informix in an ADO recordset - I'm doing this via ODBC as this >is how our Terminal Servers are set up >:¬( - then open a DAO recordset on >your Access table, and loop round in a do...while copying the records from >one to the other? Jim has an excellent link explicitly explaining how to do >just this. However, I've a sneaking suspicion that he's right, and ODBC is >at the bottom of your woes - definitely worth exploring OLEDB, as methinks >ODBC is a little old-hat these days. > >It might just be me (ASP/Oracle/SQL Server background) but I like to try and >avoid letting Jet anywhere near anything that's not solely concerned with >Access FE tables (for which, of course, it's excellent). > >Cheers >Tom > > >-----Original Message----- >From: Jim Lawrence [mailto:accessd at shaw.ca] >Sent: 27 January 2005 04:48 >To: 'Access Developers discussion and problem solving' >Subject: RE: [AccessD] Data from Informix to Access - dirty reads? > >Hi Mark: > >Your bottle-neck is ODBC. The only way around that is if there is a direct >ADO-OLE equivalent. I am sure there are ADO drivers for every version of >Informix...check these out: > >http://www.gold-software.com/LuxenadbExpressdriverforInformixPro-review9342. >htm (ADO type driver... shareware. > >You can download the driver from IBM at: >http://www.ibm.com/products/finder/us/en/finders?pg=ddfinder > >To then use it the code is something like this: > >Dim objConn As ADODB.Connection >Dim gsConnectionString as String > >gsConnectionString = "Provider=Ifxoledbc;Password=pass; Persist Security >Info=True;User ID=user;Data Source=market_report;" > >objConn.connectionstring = gsConnectionString >objConn.Open > >HTH >Jim > > >-----Original Message----- >From: accessd-bounces at databaseadvisors.com >[mailto:accessd-bounces at databaseadvisors.com] On Behalf Of Mark A Matte >Sent: Tuesday, January 25, 2005 6:49 AM >To: accessd at databaseadvisors.com >Subject: RE: [AccessD] Data from Informix to Access - dirty reads? > >Hello All, > >Every week I do pulls from Informix to A97 using ODBC. 1 of my pulls now is > >around 1 million records. I use temp tables and append queries. This can >take a few hours. Some of the replies in this thread imply there is a much >'better/faster' way. Without changing versions of Access...is there a way >to 'tweak'/'speed up' this data pull? > >Thanks, > >Mark > > > >>From: Roz Clarke <roz.clarke at donnslaw.co.uk> >>Reply-To: Access Developers discussion and problem >>solving<accessd at databaseadvisors.com> >>To: "'Access Developers discussion and problem >>solving'"<accessd at databaseadvisors.com> >>Subject: RE: [AccessD] Data from Informix to Access - dirty reads? >>Date: Tue, 25 Jan 2005 09:52:19 -0000 >> >>Informix doesn't support XML afaik >< >> >>We did think about this as a way around connection issues for SQL Server >>when we thought that we would have our main db replicating to SQL Server >>rather than Informix - our recordsets are going to be up to about 50k rows >>I >>think. I don't know how XML would perform with that volume of data but it's >>academic for now. >> >>Roz >> >>-----Original Message----- >>From: John W. Colby [mailto:jwcolby at colbyconsulting.com] >>Sent: 24 January 2005 20:58 >>To: 'Access Developers discussion and problem solving' >>Subject: RE: [AccessD] Data from Informix to Access - dirty reads? >> >> >>How much data? Can it export it to an XML file in a location where your fe >>can use it? XML has a high overhead but can be useful in cases like this. >> >>John W. Colby >>www.ColbyConsulting.com >> >>Contribute your unused CPU cycles to a good cause: >>http://folding.stanford.edu/ >> >>-----Original Message----- >>From: accessd-bounces at databaseadvisors.com >>[mailto:accessd-bounces at databaseadvisors.com] On Behalf Of Roz Clarke >>Sent: Monday, January 24, 2005 10:23 AM >>To: 'Access Developers discussion and problem solving' >>Subject: [AccessD] Data from Informix to Access - dirty reads? >> >> >>Hi all >> >> >>We have a bit of a problem with getting data out of our Informix server >>since we recently turned on transaction logging for replication. When >>extracting data with an Access XP MDE using pass-through queries, Access >>locks entire tables in the Informix database, which causes transaction >>errors and makes the Informix database scarily unstable. >> >>Our Informix suppliers told us that the way to avoid these locking issues >>was to set the connection to 'dirty read' before running the SQL. However, >>Access cannot execute 2 statements in a pass-through query and it does not >>hold the connection open between the execution of 1 statement and the next. >>Thus when the query is processed the 'dirty read' setting is no longer in >>effect. >> >>We have been racking our brains trying to come up with a workaround. Some >>further options that we have considered are: >> >>* Stick the data in a temp table in Informix. This is no good because >>the temp table is destroyed automatically when the connection is closed and >>there's no way to make it persist long enough to bind it to a report. >>* Use a view in Informix. This is no good because views in Informix >>cannot be set read-only. >>* Create a permanent table in Informix and destroy it when finished >>with it. This is far from ideal because Informix does not support SELECT >>INTO and therefore a table would have to be explicitly constructed with >>names columns etc. We really need the system to be flexible so that the >>queries can be easily changed. >>* Use an ADO recordset. This is a PITA because you cannot bind a >>report to a recordset in an MDE and we cannot build the report on the fly - >>we are a Terminal Services site so we will have up to 20 users in one FE. >>* Create a table in Access and destroy it when finished with it. Can't >>think of a better way to induce bloating... >> >>Has anyone faced this kind of problem before? Any bright ideas? Our >>foreheads are starting to bleed... >> >>TIA >> >>Roz (and Tom) >> >> >>-- >>AccessD mailing list >>AccessD at databaseadvisors.com >>http://databaseadvisors.com/mailman/listinfo/accessd >>Website: http://www.databaseadvisors.com >> >>The contents of this message and any attachments are the property of Donns >>Solicitors >>and are intended for the confidential use of the named recipient only. >>They may be legally >> privileged and should not be communicated to, or relied upon, by any >>other party without >>our written consent. If you are not the addressee, please notify us >>immediately so that we >>can make arrangements for its return. You should not show this e-mail to >>any person or >> take copies as you may be committing a criminal or civil offence for >>which you may be >> liable. The statement and opinions expressed in this e-mail message are >>those of the >>writer, and do not necessarily represent that of Donns Solicitors. >>Although any files attached >> to this e-mail will have been checked with virus protection software >>prior to transmission, >>you should carry out your own virus check before opening any attachment. >>Donns Solicitors does not accept any liability for any damage or loss which >> >> > > > >>may be caused >>by software viruses... >>-- >>AccessD mailing list >>AccessD at databaseadvisors.com >>http://databaseadvisors.com/mailman/listinfo/accessd >>Website: http://www.databaseadvisors.com >> >> > > > > >------------------------------------------------------------------------ > > >The contents of this message and any attachments are the property of Donns Solicitors >and are intended for the confidential use of the named recipient only. They may be legally > privileged and should not be communicated to, or relied upon, by any other party without >our written consent. If you are not the addressee, please notify us immediately so that we >can make arrangements for its return. You should not show this e-mail to any person or > take copies as you may be committing a criminal or civil offence for which you may be > liable. The statement and opinions expressed in this e-mail message are those of the >writer, and do not necessarily represent that of Donns Solicitors. Although any files attached > to this e-mail will have been checked with virus protection software prior to transmission, >you should carry out your own virus check before opening any attachment. >Donns Solicitors does not accept any liability for any damage or loss which may be caused >by software viruses... > > -- Marty Connelly Victoria, B.C. Canada