The Generic server pool stores any server that is not in a top-level server pool and is not policy managed. Servers that host non-policy-managed applications, such as administrator-managed databases, are statically assigned to the Generic server pool.
The Generic server pool's attributes are restricted, as follows:
No one can modify configuration attributes of the Generic server pool (all attributes are read-only)
You can only create administrator-managed databases in the Generic Pool, if the server you want to create the database on is one of the following:
Online and exists in the Generic server pool
Online and exists in the Free server pool, in which case Oracle Clusterware moves the server into the Generic server pool
Online and exists in any other server pool and the user is either a cluster administrator or is allowed to use the server pool's servers, in which case, the server is moved into the Generic server pool
Offline and the user is a cluster administrator