6.1.2 About Server Pools
When Oracle Clusterware is installed, two server pools are created automatically: Generic and Free.
All servers in a new installation are assigned to the Free server pool, initially. Servers move from Free to newly defined server pools automatically.
The Free Server Pool
The Free server pool contains servers that are not assigned to any other server pools.
The attributes of the Free server pool are restricted, as follows:
-
SERVER_NAMES
,MIN_SIZE
, andMAX_SIZE
cannot be edited -
IMPORTANCE
andACL
can be edited
The Generic Server Pool
The Generic server pool stores any Oracle Database that is not policy managed.
Additionally, the Generic server pool contains servers with names you
specified in the SERVER_NAMES
attribute of the server pools that
list the Generic server pool as a parent 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)
-
When DBCA or SRVCTL specifies a server name in the
HOSTING_MEMBERS
resource attribute, Oracle Clusterware only allows it if the server is:-
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
-
Parent topic: Policy-Managed Clusters and Server Pools