Database in RAC or not?

Question

Hi all,
Can anyone tell me, how to find whether my DB is RAC or not? Its bit urgent. Thanks in advance!!!
Regards,
Mithra.

Answer 1

Following is the extract from the link posted:
1.)The primary and standby databases must be running Oracle Database 10g (10.2) and each can be installed in either a single-instance or multi-instance environment. The database must be licensed for Oracle Enterprise Edition or Personal Edition.
2.)You must use a server parameter file (SPFILE) to ensure the broker can persistently reconcile values between broker properties and any related initialization parameter values.
3.)The value of the DG_BROKER_START parameter must be set to TRUE. (Enterprise Manager sets this parameter automatically.)
4.)If any of the databases in the configuration is a RAC database, you must set up the DG_BROKER_CONFIG_FILEn initialization parameters for that database such that they point to the same shared files for all instances of that database. The shared files could be files on a cluster file system, if available, on raw devices, or stored using Automatic Storage Management (ASM).
5.)Oracle Net Services network files must be set up on the primary database and on the standby database if you configure an existing standby database into the broker configuration. Otherwise, Enterprise Manager automatically sets up the network files when it creates a standby database.
6.)If you are using a nondefault port number (for example, something other than port 1521) for the local listener address, you must set the LOCAL_LISTENER initialization parameter on each instance that is part of a broker configuration to a listener address that is reachable by all members of the configuration. See the Oracle Database Reference and the Oracle Database Net Services Administrator's Guide for additional information.
7.)To enable DGMGRL to restart instances during the course of broker operations, a service with a specific name must be statically registered with the local listener of each instance. The value for the GLOBAL_DBNAME attribute must be set to a concatenation of db_unique_name_DGMGRL.db_domain. For example, in the LISTENER.ORA file:
LISTENER = (DESCRIPTION =
(ADDRESS_LIST=(ADDRESS=(PROTOCOL=tcp)(HOST=host_name)
(PORT=port_num))))
SID_LIST_LISTENER=(SID_LIST=(SID_DESC=(SID_NAME=sid_name)
(GLOBAL_DBNAME=db_unique_name_DGMGRL.db_domain)
(ORACLE_HOME=oracle_home)))
8.)Any database, including instances of the database, managed by the broker must be mounted.
9.)If any of the databases in the configuration is a RAC database, the START_OPTIONS for that database must be set to MOUNT in the Oracle Cluster Repository (OCR) using srvctl as follows:
srvctl add database -d <db_unique_name> -o <$oracle_home> -s mount
or
srvctl modify database -d <db_unique_name> -o <$oracle_home> -s mount
The primary database must be opened in ARCHIVELOG mode.
10.)You must set the COMPATIBLE initialization parameter to 9.2.0.1.0 or higher for both the primary and standby databases. However, if you want to take advantage of new Oracle Database 10g features, set the COMPATIBLE parameter to 10.2.0.0.Regards.