OAB version 4 in Exchange 2003 service pack 2 (SP2)

Throttling the OAB

Eileen Brown's WebLog — Thu, 23 Mar 2006 16:04:21 GMT

Heck, I've wanted to throttle the OAB lots of times - but that's not the reason for this blog entry :-).&nbsp;...

Deploying the Offline Address book (OAB) with SMS

Eileen Brown's WebLog — Wed, 31 Aug 2005 20:17:00 GMT

I blogged about deploying Windows&nbsp;2003 SP1 with SMS last week, and completely missed this document...

Offline Address Book Version 4

Exchange Blog Latino — Sat, 20 Aug 2005 22:33:09 GMT

Offline Address Book Version 4

Exchange Blog Latino — Sat, 20 Aug 2005 22:28:41 GMT

re: OAB version 4 in Exchange 2003 service pack 2 (SP2)

Neil Shipp — Thu, 11 Aug 2005 03:41:17 GMT

I know the Outlook team spent a lot of time tuning the OAB V4 update code on limited memory machines. I've been running V4 on my own laptop with 384meg of ram for some time now and the performance and usability is much much better than it was for V2 or V3. I rarely even notice when the OAB is being updated.

Part of the problem with V2 and V3 was that the underlying file formats required large numbers of random disk updates to merge in the changes which tanked the machine for long periods of time. The V4 format, reads the file in sequentially, streams out the new file sequentially and uses a fixed amount of memory that grows linearly with the number of change files being applied. After that is finished, the client then reindexes the file using a new tuned algorithm.

Weekend reading

subject: exchange — Fri, 05 Aug 2005 13:13:04 GMT

re: OAB version 4 in Exchange 2003 service pack 2 (SP2)

dgoldman — Fri, 05 Aug 2005 07:00:32 GMT

The binpatch technology will help with most of the common download problems (these are referenced in the blog). If you have a very large oab, you are most likely going to still have this problem.

In regard to SP2, your assumption is correct. You will need to have both Exchange Server 2003 Service Pack 2 and Office/Outlook SP2 in place before you can use any of the new features.

re: OAB version 4 in Exchange 2003 service pack 2 (SP2)

Matt S. — Wed, 03 Aug 2005 20:39:40 GMT

With the size of our OAB we have noticed that on laptops with less than 512 MB of RAM merging the changes in the OAB severly degrades the laptops performance, sometimes to the point where the laptop in not usable. Will the use of the binpatch files lessen this impact?

Also, I assume that the when clients upgrade to SP2 they will get a full OAB download if the OAB 4 folder exists, so we should make sure we have the OAB generation server to Exchange SP2 before we have a large number of OL2003 SP2 machines out there and impact our network?

re: OAB version 4 in Exchange 2003 service pack 2 (SP2)

dgoldman — Wed, 03 Aug 2005 20:11:32 GMT

If you are talking about copying them from one profile to another, no. If the client detects that one of the oab files is missing, it will start a full download of the oab.

It would be easier to just do a new download for this new profile, this way the oab files will be current.

re: OAB version 4 in Exchange 2003 service pack 2 (SP2)

philmara — Wed, 03 Aug 2005 15:10:40 GMT

As lot of people used OL2K3 cache mode on bad network,for a new outlook profil is there any possibility to copy the oab (even a part of)?

Philmara