What are some of the RAC specific parameters?

Published by Charlie Davidson on

What are some of the RAC specific parameters?

init parameters in Oracle RAC

  • instance_number. Oracle Real Application Clusters (RAC) parameter specifies a unique number that maps the instance.
  • instance_group.
  • thread.
  • cluster_database.
  • cluster_database_instances.
  • cluster_interconnects.
  • remote_listener.
  • local_listener.

What are the different types of parameters in Oracle?

The Oracle database server has the following types of initialization parameters:

  • Derived Parameters.
  • Operating System-Dependent Parameters.
  • Variable Parameters (these can be dynamic parameters or any of the preceding ones)

What are parameters in Oracle?

In general, parameter is a placeholder for a variable that contains some value of some type when executing a general-purpose query, or arguments and return values when a stored procedure is executed. Parameter is represented by Oracle.

What are Oracle RAC components?

At a very high level, RAC architecture consists of these components:

  • Physical Nodes or Hosts.
  • Physical Interconnects and interconnect protocols.
  • Cluster Manager Software and Cluster Ready Services.
  • Oracle Instances and Cache Fusion.
  • Shared Disk System.
  • Clustered File System, Raw Devices, Automatic Storage Management.

How do I change the compatible parameter in Oracle 12c RAC?

After the upgrade is complete, you can increase the setting of the COMPATIBLE initialization parameter to the maximum level for Oracle Database.

  1. Change parameter value. SQL> ALTER SYSTEM SET COMPATIBLE = ‘11.0.0’ SCOPE=SPFILE;
  2. Shutdown database.
  3. Start database.
  4. Cross check for parameter for new value.

What are the different types of parameters in SQL?

Input parameters allow the caller to pass a data value to the stored procedure or function. Output parameters allow the stored procedure to pass a data value or a cursor variable back to the caller. User-defined functions cannot specify output parameters.

What is a parameter file?

A parameter file is a file that contains a list of initialization parameters and a value for each parameter. You specify initialization parameters in a parameter file that reflect your particular installation. Oracle supports the following two types of parameter files: Server Parameter Files.

How does Oracle RAC work?

Oracle RAC allows multiple computers to run Oracle RDBMS software simultaneously while accessing a single database, thus providing clustering. In a non-RAC Oracle database, a single instance accesses a single database. The database consists of a collection of data files, control files, and redo logs located on disk.

What is RAC architecture?

RAC Architecture. Oracle Real Application clusters allows multiple instances to access a single database, the instances will be running on multiple nodes. In an standard Oracle configuration a database can only be mounted by one instance but in a RAC environment many instances can access a single database.

How do you set a compatible parameter?

What does RAC stand for in Oracle Database?

What is Oracle RAC? What is Oracle RAC? Oracle Database with the Oracle Real Application Clusters (RAC) choice enables multiple instances operating on diverse servers to access a similar physical database stored with distributed Storage.

Why are there different initialization parameters in Oracle RAC?

Different values for instances in your Oracle RAC database are likely to increase overhead because of additional automatic synchronization performed by the database processing.

What does Oracle Real Application Clusters ( RAC ) do?

Oracle Database with the Oracle Real Application Clusters (RAC) choice enables multiple instances operating on diverse servers to access a similar physical database stored with distributed Storage. The database covers multiple hardware devices, however, it shows up as a single specific database towards the application.

How many instances can a RAC database have?

Oracle RAC environments, however, have a one-to-many relationship between the database and instances. An Oracle RAC database can have up to 100 instances, Foot 1 all of which access one database. All database instances must use the same interconnect, which can also be used by Oracle Clusterware.

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