In this post, you’ll learn more about the Oracle ErrorXOQ-01993: The data type of base attribute “string” or its mapped expression is incompatible with materialized views. with the details on why you receive this error and the possible solution to fix it.
Oracle Error Description
XOQ-01993: The data type of base attribute “string” or its mapped expression is incompatible with materialized views.
Reason for the Error XOQ-01993: The data type of base attribute “string” or its mapped expression is incompatible with materialized views.
Cause: The data type of the attribute or its mapped expression is not supported by materialized views.
How to fix the Error XOQ-01993: The data type of base attribute “string” or its mapped expression is incompatible with materialized views. ?
You can fix this error in Oracle by following the below steps
Action: Change the data type of the attribute or its mapped expression.
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