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7 Oracle RAC Administration > Managing the Oracle RAC Database with SRVCTL

Managing the Oracle RAC Database with SRVCTL

Oracle provides certain command line utilities that allow you to query and change the status, or change the configuration of your cluster and Oracle RAC components. Chapter 3 discussed crsctl, ocrcheck, and ocrconfig. You also learned about the use of SRVCTL to manage the SCAN and the listeners. In this section, we will focus on examples of how to use SRVCTL correctly to manage your database and ASM. Managing services and node applications with SRVCTL is discussed in Chapter 8.

The Server Control Utility (SRVCTL)

The Server Control Utility (SRVCTL) is a command-line utility to administer your ASM instance, Oracle RAC instances, node applications, and database services. The key point to remember when using SRVCTL in your cluster is that SRVCTL retrieves and writes configuration data from and into the Oracle Cluster Registry (OCR). You should be aware that on your nodes exist two SRVCTL utilities—one at RDBMS home and another one in the Grid Infrastructure (GI) home—and that both are owned by different users. If you need to manage a database or instance, you should use RDBMS user and the SRVCTL from the RDBMS home. For GI-related tasks, use GI user and SRVCTL from GI home. Also note that from Oracle Database 11g Release 2 on, ASM is controlled by the GI user, but at 10g Release 2 and 11g Release 1, it needs to be controlled by the ASM/RDBMS user.


  

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