Managing Database Configuration with SRVCTL

SRVCTL, or the server control utility, is a command-line utility. The functions performed by SRVCTL can be divided into two major groups:

Database configuration tasks

Database instance control tasks

Oracle stores database configuration information in a repository. In Oracle 9i, the repository is located in a file stored as srvConfig.loc. The file itself should be located on a shared storage device so that it can be accessed from all the nodes. In Oracle 10g, the repository information is stored in the Oracle Cluster Registry (OCR) that is created while CRS is being installed and must be located on shared storage. In Oracle 11g R2, there is another repository that stores a local copy of OCR data. It is known as the Oracle Local Repository (OLR).