And ....WLS uses myrealm by default and embedded LDAP is used as the data store for this.
And the "fileRealm.properties" is not used by WLS unless and untill customer do not activate the "CompatibilityRealm"
So I guess fileRealm.properties file can be removed from domain if customer doesn’t use “compatibility realms”.fileRealm.properties files are only used with compatibility realms and adapter authenticator.
The reason to have the config wiz create filerealm.properties is that it allows the customer to reconfigure the domain later.
The file "fileRealm.properties" may be treated as a dummy example file. This file is not used by weblogic unless and untill you do not activate the "CompatibilityRealm"