Storage Foundation for Oracle® RAC 7.3.1 Administrator's Guide - Linux
- Section I. SF Oracle RAC concepts and administration
- Overview of Storage Foundation for Oracle RAC
- About Storage Foundation for Oracle RAC
- Component products and processes of SF Oracle RAC
- About Virtual Business Services
- Administering SF Oracle RAC and its components
- Administering SF Oracle RAC
- Starting or stopping SF Oracle RAC on each node
- Administering VCS
- Administering I/O fencing
- About the vxfentsthdw utility
- Testing the coordinator disk group using the -c option of vxfentsthdw
- About the vxfenadm utility
- About the vxfenclearpre utility
- About the vxfenswap utility
- Administering the CP server
- Administering CFS
- Administering CVM
- Changing the CVM master manually
- Administering Flexible Storage Sharing
- Backing up and restoring disk group configuration data
- Administering SF Oracle RAC global clusters
- Administering SF Oracle RAC
- Overview of Storage Foundation for Oracle RAC
- Section II. Performance and troubleshooting
- Troubleshooting SF Oracle RAC
- About troubleshooting SF Oracle RAC
- Troubleshooting I/O fencing
- Fencing startup reports preexisting split-brain
- Troubleshooting CP server
- Troubleshooting server-based fencing on the SF Oracle RAC cluster nodes
- Issues during online migration of coordination points
- Troubleshooting Cluster Volume Manager in SF Oracle RAC clusters
- Troubleshooting CFS
- Troubleshooting interconnects
- Troubleshooting Oracle
- Troubleshooting ODM in SF Oracle RAC clusters
- Prevention and recovery strategies
- Tunable parameters
- Troubleshooting SF Oracle RAC
- Section III. Reference
Configuring the VXFEN module parameters
After adjusting the tunable kernel driver parameters, you must reconfigure the VXFEN module for the parameter changes to take effect.
The following example procedure changes the value of the vxfen_min_delay parameter.
On each Linux node, edit the file /etc/sysconfig/vxfen to change the value of the vxfen driver tunable global parameters, vxfen_max_delay and vxfen_min_delay.
Note:
You must restart the VXFEN module to put any parameter change into effect.
To configure the VxFEN parameters and reconfigure the VxFEN module
- Shut down all Oracle service groups on the node.
# hagrp -offline oragrp -sys sys1
- Stop all Oracle client processes, such as sqlplus, svrmgrl, and gsd, on the node.
- Stop all the applications that are not configured under VCS. Use native application commands to stop the application.
- Stop VCS on all the nodes. Run the following command on each node:
# hastop -local
- Stop the VxFEN driver.
For RHEL 7, SLES 12, and supported RHEL distributions:
# systemctl stop vxfen
For earlier versions of RHEL, SLES, and supported RHEL distributions:
# /etc/init.d/vxfen stop
- Edit the /etc/sysconfig/vxfen file.
For example, change the entry from:
vxfen_min_delay=1
to:
vxfen_min_delay=30
- Start the VXFEN module.
For RHEL 7, SLES 12, and supported RHEL distributions:
# systemctl start vxfen
For earlier versions of RHEL, SLES, and supported RHEL distributions:
# /etc/init.d/vxfen start
- Bring the service groups online.
# hagrp -online oragrp -sys sys1
- Start all the applications that are not configured under VCS. Use native application commands to start the applications.
- Start VCS.
# hastart