Identity Portal installation program reaches the database credentials step and fails to go beyond even when all details are correct.
This happens when the installer cannot create the JDBC data source
The data source has to be made manually.
Here are the steps to create the data source:
JNDI Name: java:jboss/datasources/jdbc/sigmadb
Connection URL: jdbc:sqlserver://<servername>:<port>;databaseName=<db_name>
Username: <your username>
Then Test Connection.
Edit sigma-ds connection tab, and disable "use CCM"
Go to Pool tab, and set Max Pool Size to 25
Enable data source and continue Identity Portal Installation