Oracle Real Application Clusters
This book provides comprehensive coverage of the features, technology and principles of RAC that is part of the Oracle9i release of Oracle's RDBMS product.
TABLE OF CONTENTS Oracle Real Application Clusters
Part IV: Appendices
Chapter List
- Appendix 1: Utilities
- Appendix 2: Scripts
- Appendix 3: References
- Appendix 4: Work Plan
A1.1 GSDCTL: Global service daemon control
In Oracle 9 i Release 2, Oracle has introduced another utility to manage the GSD process called the GSDCTL. Let us look at the GSD commands:
| gsdctl start | Start the GSD |
| gsdctl stop | Stop the GSD |
| gsdctl stat | Check status of the GSD. Check to ensure that GSD is running |
Usage
gsdctl stat
Example:
ora-db1:RAC1:oracle# gsdctl statGSD is running on the local nodeora-db1:RAC1:oracle#
A1.2 SRVCTL: Server control
In this section, let us look at the server control ( SRVCTL) commands provided by Oracle to manage the clustered databases from the command line. The SRVCTL replaces and extends the capabilities of the OPS tool called OPSCTL, which supported only the START and STOP subcom mands. In comparison to OPSCTL, the START and STOP subcommands have been extended with additional options and new subcommands have been added to support more functionality.
Unlike its predecessor, the SRVCTL utility also helps monitor the instances from the Oracle Enterprise Manager (OEM). It serves as a single point of control between the Oracle Intelligent Agent (OIA) and the nodes of the cluster. Only one node's OIA is used to communicate with the SRVCTL. That node communicates to the other nodes through Oracle Net.
Before invoking any commands to manage the RAC from the
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