Locking a Connection
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To lock a specific database connection configuration in
the pdwdata.xml file, check the Locked parameter.

Notice that none of the parameters can be changed, you can only
test the connection, and you can't unlock a configuration once it
is locked.
To unlock a connection you will need to do so manually in the
pdwdata.xml file and change the Locked tab of the connection to
false.
To find the location of the pdwdata.xml file look at the
connection path in the Login screen with More expanded. See also Configuration.