Error: DM0498: Invalid activity, database not available

Document ID : KB000093680
Last Modified Date : 01/05/2018
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Question:
How do we resolve the following error when we cannot find this in the Message Guide?
 
Error: DM0498: Invalid activity, database not available
Answer:
DM0498 means that the default database in z/OS DD DATABASE does not exist or the database that they are trying to USE was moved to a different location or renamed. (probably renamed, this is a popular possibility) 

You might try running a batch report and see if it works or review the CLIST that is being used by the customer.
Additional Information:
Link to product status
https://support.ca.com/us/product-content/status/support-life-cycle/indexes/ca-ramis-for-z-os-release-and-support-lifecycle-dates.html