You administer a six-instance, policy-managed, multitenant RAC database CDB1 with three PDBs: PDB_1, PDB_2 and PDB_3.
Server pool prod_pool has a cardinality of three and all six hosts of the cluster app.
Examine these commands executed on HOST01:
$ srvctl add service db CDB1 pdb PDB_1 service AR serverpool prod_pool cardinality singleton
$ srvctl start service db CDB1 service AR
Which two statements are true regarding the AR service?
The AR service is configured as a singleton in the server pool prod_pool, meaning it will be available on only one CDB1 instance at a time in that server pool. Therefore, it is true that AR is available on any one available CDB1 instance in prod_pool at any one time. Additionally, since it runs as a singleton, if the current instance running the AR service fails, it can fail over to any other available CDB1 instance in prod_pool. This ensures high availability and resilience of the service.
completely wrong, BE
BE is correct
A no; a singleton service runs in only one instance B no; a singleton service is available in only one instance, though it's true that the instances of CDB1 runs all in hosts in prod_pool C yes: a singleton service runs in only one instance, though it can failover to only one same database instance D no; service creation and service starting does not have to take place in the same node of command execution E yes; can fail over to any other instance of CDB1 database, and this database runs in the three hosts that belong to prod_pool
sorry b and E not b and c
it is B,C it is cardinality singleton mean that will be run on only one instance at a time and choose from server pool active then failover if instance fails
I think is BE