Exchange error 629

By Maximum Error
in Microsoft (Windows)

 Share

Recommended Posts

Experienced

Maximum Error

Posted
Posted

So after deleting a large number of mailboxes during a tidy out of our AD we are seeing error 629 pop up twice a day with the details below. 

 

Information Store (796) Mailbox Database (X): Database 'path to DB': While attempting to move to the next or previous node in a B-Tree, the database engine skipped over 30299 non-visible nodes in 117 pages. In addition, since this message was last reported 7 hours ago, 0 other incidents of excessive non-visible nodes were encountered (a total of 0 nodes in 0 pages were skipped) during navigation in this B-Tree. It is likely that these non-visible nodes are nodes which have been marked for deletion but which are yet to be purged. The database may benefit from widening the online maintenance window during off-peak hours in order to purge such nodes and reclaim their space. If this message persists, offline defragmentation may be run to remove all nodes which have been marked for deletion but have yet to be purged from the database. 
Name: MSysObjects 
Owning Table: MSysObjects 
ObjectId: 2 
PgnoRoot: 4 
Type: 2 
Unversioned Deletes: 30299 
Uncommitted Deletes: 0 
Committed Deletes: 0 
Non-Visible Inserts: 0 

I have obviously tried increasing our maintenance window to over 48 hours over Friday, Saturday and Sunday but this hasn't fixed it. The only two options I can see now are:

  1. Take the database offline and perform an offline defrag. Any ideas how long this will take on a 250GB database? 
  2. Migrate everyone (in stages) to a new database.

Before I take either one of these options I wanted to check here and see if anyone has come across this error before? 

 

Thanks guys.

 

Link to comment
https://www.neowin.net/forum/topic/1236957-exchange-error-629/
Share on other sites
Grand Master

sc302 Veteran

Posted
  • Veteran
Posted

Yes you will need to run a defrag or a repair on the db to get things back in order.  eseutil will defrag 9 GB an hour so around 28 hours.  You are honestly better off migrating to a new database if you want it to be faster.

  • Maximum Error
  • Like 1
Experienced

Maximum Error

Posted
  • Author
Posted

Yes you will need to run a defrag or a repair on the db to get things back in order.  eseutil will defrag 9 GB an hour so around 28 hours.  You are honestly better off migrating to a new database if you want it to be faster.

 

Ouch....... 9GB an hour would be a totally unacceptable level of downtime. I've never ran an offline defrag so didn't know. I will definitely be going down the migration route. Do you know any more detail on what causes this to happen? My guess is that when it came to purge the 200+ mailboxes we deleted (a tidy up had not been done for years) it just couldn't cope with the massive amount of data to be purged. 

This topic is now closed to further replies.
 Share
Go to topic listing

  • Posts

    • WhatsApp slams Isreali firm, NSO Group, for trying to spy on its users

      By Lamp Post · Posted

      Pure racism.
    • Google Chrome is killing all uBlock Origin bypasses, Microsoft Edge, Opera to follow

      By Nas · Posted

      FWIW StatCounter has been trash for over 25+ years! Back in the day (circa 2000 and GeoCities pre-Blogger era), it was useful to paste a number on your webpage indicating how many visitors you had. In the ensuing 25+ years, they've grown in reputation and changed their ways... but their overall consumer value has remained abysmal. Serious marketing agencies only cite StatCounter when there's literally no other sources available to support any marketing claims! They are the absolute lowest threshold serious companies use to push any sort of narrative about this-or-that happening. Besides their credibility being what it is, they are forever subject to quality issues. They're so bad that my DNS-level ad-filter prevents me from even viewing their main website! HA!
    • Microsoft had to shut down 70+ GitHub repos after getting hacked, brings back some

      By Aditya Tiwari · Posted

      Microsoft had to shut down 70+ GitHub repos after getting hacked, brings back some by Aditya Tiwari The self-replicating malware campaign known as Miasma took the open-source world by storm. It was reported that almost 73 Microsoft GitHub repositories were infected by the worm and had to be temporarily shut down to determine how attackers compromised projects and stuffed password-stealing malware in the code. These GitHub repos span across different organizations, including Microsoft Azure, Azure-Samples, Microsoft, and MicrosoftDocs. The malware enabled attackers to steal passwords and credentials when compromised tools were opened in popular AI coding apps, including Claude Code, Gemini CLI, VS Code, and Cursor. The security firm Cloudsmith, malware analysis site OpenSourceMalware, and 404 Media were among the first to report the hack. For background, Miasma is a variant of the Mini Shai-Hulud worm, open-sourced by the threat group TeamPCP. It started its journey by compromising a Red Hat employee's GitHub account to attack the @redhat-cloud-services npm namespace. Earlier this month, Microsoft Threat Intelligence reported that the Miasma attackers published 32 malicious packages across more than 90 versions under the @redhat-cloud-services npm scope to steal cloud credentials. The worm didn't take long to start attacking source repos directly rather than package registries. It is known to skip the npm registry entirely for several targets and plant malicious code straight into public repos like "icflorescu/mantine-datatable." The delivery approach was designed to weaponize AI coding tools. Miasma's malicious payload embedded into projects can trigger automatic code execution when the infected repo is opened in an AI coding tool or IDE. The list of affected projects includes "durabletask", a Python package compromised by TeamPCP a month earlier to deliver an information stealer designed for Linux systems. That said, Microsoft has begun restoring some repos affected by the malware campaign, The Hacker News reports. A company spokesperson stated the following: Microsoft will continue to investigate the attack. It has notified a small number of customers who may have removed their content from the affected repos. The company will reach out to customers again through established support channels "if anything further is identified that requires customer action."
    • Google Chrome is killing all uBlock Origin bypasses, Microsoft Edge, Opera to follow

      By RejZoR · Posted

      Why is Opera doing this notification at all? They have their own extension store. They don't have to obey anything dictated by Google. Others like Brave and Vivaldi that rely on Chrome's extension store, not so much. Firefox is entirely separate as well with its own extensions store. I honestly don't understand why entire world is just insisting on Chrome. Like, why? It's a stupid fat browser with barely any functionality. But sure, it's installed on everything by default. I don't understand how people even use web that's filled with tracking garbage and ads all over the place.
    • Politically funny images of the World

      By Steven P. · Posted

  • Recent Achievements

    • Week One Done
      rubentuben8 earned a badge
      Week One Done
    • Week One Done
      ARaclen earned a badge
      Week One Done
    • One Year In
      jojodbn earned a badge
      One Year In
    • One Month Later
      jojodbn earned a badge
      One Month Later
    • Week One Done
      jojodbn earned a badge
      Week One Done

  • Popular Contributors

    1. 1
      +primortal
      529
    2. 2
      PsYcHoKiLLa
      231
    3. 3
      +Edouard
      131
    4. 4
      ATLien_0
      88
    5. 5
      Steven P.
      82
    Show More

  • Tell a friend

    Love Neowin? Tell a friend!