Is it possible for data_engine to write to CA_UIM database in the secondary replica
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CA Unified Infrastructure Management
UIM - DATA_ENGINE:UIMDEG
Can I configure data_engine probe to connect to secondary replica via its data source address?
No, it is not possible since a secondary replica does not allow read-write access to the database in the group while data_engine will request write access to the CA_UIM database.
Normally data_engine probe is set to use listener address and port of a Availability Group as part of data source to connect to the primary replica of the group, according to:
Using a Listener to Connect to the Primary Replica
Also check explanations for all options of connection access to databases hosted on a secondary replica:
Readable secondary property of secondary replica
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