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How do you check if database is RAC or not?
There are several ways to check the status of the RAC. The srvctl utility shows the current configuration and status of the RAC database. The V$ACTIVE_INSTANCES view can also display the current status of the instances.
How do I find my Oracle instance name Linux?
The easiest way of finding the database name is: select * from global_name; This view is granted to PUBLIC, so anybody can query it. Here first one “ORCL” is database name,may be your system “XE” and other what was given on oracle downloading time.
How do I know the number of nodes in RAC?
The olsnodes command provides the list of nodes and other information for all nodes participating in the cluster. You can use this command to quickly check that your cluster is operational, and all nodes are registered as members of the cluster.
What does TNS no listener mean?
The ORA-12541 message reads, “TNS no listener.” This happens if the listener is either down as it attempts to make a connection or if it has not been started or improperly configured. In addition, it may be caused by a connectivity problem with the network.
Where is listener Ora file located?
ORACLE_HOME/network/admin
ora file is located in the ORACLE_HOME/network/admin directory. The listener. ora file can also be stored the following locations: The directory specified by the TNS_ADMIN environment variable or registry value.
How many nodes are in RAC cluster?
Oracle RAC 11g supports up to 100 nodes.
How is sysrac used in Oracle Real Application Clusters?
SYSRAC facilitates Oracle Real Application Clusters (Oracle RAC) operations by connecting to the database by the Clusterware agent on behalf of Oracle RAC utilities such as SRVCTL. The SYSRAC administrative privilege cannot be granted to database users and is not supported in a password file.
Is there a sysrac group in Oracle 12c?
Oracle 12c Release 2 (12.2) has added an extra group called SYSRAC, which will be included in the following sections. If you are using Oracle 12.1, remember this group is not supported. The documentation discusses the following groups.
What is the purpose of sysbackup administrative privilege?
The SYSBACKUP administrative privilege is used to perform backup and recovery operations from either Oracle Recovery Manager (RMAN) and or through SQL*Plus. You can log in as user SYSDG with the SYSDG administrative privilege to perform Data Guard operations.