What does RAC mean?

Source: Internet
Author: User

What does RAC mean?

RAC: Real Application Clusters
1 CRS management command
1. Start crs (both nodes need to be executed)
/Etc/init. crs start
2. query the current crs status.
/Opt/oracle/crs/bin/crs_stat-t
3. Stop crs (both nodes need to be executed)
/Etc/init. crs stop

Root user:
NODE1:
/Oracle/crs/bin/crsctl check crs <check the crs status. We recommend that you check the status command before each operation.
/Oracle/crs/bin/crsctl stop crs <disable the crs service on this node
NODE2:
/Oracle/crs/bin/crsctl check crs <check the crs status. We recommend that you check the status command before each operation.
/Oracle/crs/bin/crsctl stop crs <disable the crs service on this node

2. Options for disabling/starting db, instance, and listener with crs automatically
Run the command on any node.
$ ORA_CRS_HOME/bin/crs_register resource_name-update-o as = never
$ ORA_CRS_HOME/bin/crs_register resource_name-update-o as = 1
Resource_name can be found through $ ORA_CRS_HOME/bin/crs_stat-p
$ ORA_CRS_HOME/bin/crs_register ora. ora11g. db-update-o as = never
$ ORA_CRS_HOME/bin/crs_register ora. ora11g. ora11g1. inst-update-o as = never
$ ORA_CRS_HOME/bin/crs_register ora. ora11g. ora11g2. inst-update-o as = never
$ ORA_CRS_HOME/bin/crs_register ora. rac01.LISTENER _ RAC01.lsnr-update-o as = never
$ ORA_CRS_HOME/bin/crs_register ora. rac02.LISTENER _ RAC02.lsnr-update-o as = never
$ ORA_CRS_HOME/bin/crs_register ora. ora11g. db-update-o as = 1
$ ORA_CRS_HOME/bin/crs_register ora. ora11g. ora11g1. inst-update-o as = 1
$ ORA_CRS_HOME/bin/crs_register ora. ora11g. ora11g2. inst-update-o as = 1
$ ORA_CRS_HOME/bin/crs_register ora. rac01.LISTENER _ RAC01.lsnr-update-o as = 1
$ ORA_CRS_HOME/bin/crs_register ora. rac02.LISTENER _ RAC02.lsnr-update-o as = 1
 


Oracle RAC

Real Application Cluster (RAC) is a new technology used in Oracle9i database, and is also the core technology that Oracle Database supports the grid computing environment. The emergence of this solution solves an important problem faced by traditional data warehouse applications: the contradiction between high performance, high scalability and low price.

Oracle RAC

Real Application Cluster (RAC) is a new technology used in Oracle9i database, and is also the core technology that Oracle Database supports the grid computing environment. The emergence of this solution solves an important problem faced by traditional data warehouse applications: the contradiction between high performance, high scalability and low price.

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