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As many of us wind down for the festive season, now is a great time to think about the maintenance of the systems your business relies on, and get organised for next year. Next year, we see new trends emerging including Evergreen updates for Microsoft Dynamics 365, so use the end of the year to ensure you are prepared for changes to come.

There are significant differences in the actions you can take to maintain Dynamics 365 and Dynamics AX 2012 and older. Here’s our handy guide to the actions you should take now in order to maintain your systems:


Your checklist for Microsoft AX 2012 and older:

1. Patch your servers

- Non-production first then, after sufficient testing PROD
- Security updates should go in ASAP, the rest one month behind

2. Unique rebuild/reorganise index jobs

- Standard SQL out the box is not very efficient
- Minimum best practice
      > Ignore 0-33% Fragmented
      > Reorganise 34-66% Fragmented
      > Rebuild 67-100% Fragmented

Every version of the AX system fragments in different ways and speeds, so it is recommended that you run a check index fragmentation script to an output file/DB for a few weeks evaluate the collected data to see which your key tables are and tweak the above job to fit your exact system.

3. Update status

This should be run in accordance with the frequency of the index jobs. If you have highly transactional tables it would generally be beneficial to run more frequently but you can run jobs that only target fragmented tables.

4. Data purging

- Use the standard module clean up batch jobs to maintain and keep your database growth in order. For example:
- Target and frequently check the following tables for large growth:
      > Dbo.batchjobhistory
      > Dbo.batchhistory
      > Dbo.eventcud (there is a job in AX to cleanse this but often still grows due to the criteria of the clean-up job)
      > Dbo.sysdatabaselog

Example of clean up

5. Batch job setup

User will set up more and more batch jobs as time goes on, ensure that they are configured with only say history ‘errors only’ as if you have 30 batch jobs running every 10 mins and logging history upon competition it will soon be millions of records and exponential DB growth.

6. Save ERP downtime

Setup Application Object Server (AOS) to have windows service auto restart 3 times before no action (most restarts a day) often saves ERP downtime.

7. Stop processes crashing

Setup AOS config to have garbage collector set to false, this will release RAM faster and stop processes crashing out the AOS if AX gets itself in a mess.

8. Auto log-off

Have auto log off on thin clients for anything over a few hours as AX sessions can become corrupt if a user tries to reconnect.

9. Test your disaster recovery plan on a regular basis

- Know your RTO (Recovery time objective) how long your business can live without ERP
- Know your RPO (Recovery point objective) how much data can be lost during the disaster recovery process
- Test this process to make sure you can hit both of the above

10. Consistency check job

- Can run in either check or fix mode against modules:
      > Check mode may well hit the 1000 limit of info log messages
      > Fix mode can fix missing data and orphaned data
- This can take a long time and should only be ran infrequently but still a planned activity
- For example: to fix inventory management

Example of Consistency check

11. Test your backups regularly

- Perform full backups minimum daily
- Log backups as often as the customer needs

12. Check for users last login dates - so you can disable any unused accounts for License saving

- There is a last login report but this does not bring back just the last one per user, it has multiple entries per user
- SQL script can be easier to get this info. Below find an example which will only return one record per user:




group by USERINFO.ID

13. Allow security allocations to be audited

- Microsoft address the common request from customers to be able to audit security allocations made for users in Dynamics AX 

Your checklist for Microsoft Dynamics 365:

Microsoft Dynamics 365 is a completely different animal to Microsoft AX, but there are still steps you can take to maintain your system by:

  • Patching your servers
  • Preparing for Evergreen updates, which are set to hit Microsoft Dynamics 365 for Finance and Operations in April 2019. it’s not too early to begin to manage the process of ensuring your systems will still function post-April 
evergreen updates for microsoft dynamics

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