As Richard said, we do not recommend sharing the ITCM MDB with other products. This is for performance reasons as well as other concerns around maintenance, upgrades, etc. ITCM is a VERY heavy database user, and will impact the performance of the other products.
The recommended method to have ITCM share its data with other products is to use the SQL Bridge. This procedure replicates the ITCM database into the other product’s MDB so it can be used. Since the replicated data is only being updated by ITCM as it changes, the impact on the other product is minimal. Also, if you start with a Domain and find at a later time you need an Enterprise, the process to remove the replicated data from the Domain and replace it with data from the Enterprise is relatively simple and has minimal impact on either product, though it does take several hours.
PLEASE listen to this advice. We have seen this scenario many times in the past, and I personally have been involved with many projects to fix this scenario, which is not a simple task and involves considerable disruption to both products.
Steve McCormick, ITIL
CA Technologies
Principal Services Consultant
Stephen.McCormick@ca.com
<mailto:Stephen.McCormick@ca.com>