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
About GAB load-time or static tunable parameters
Table: GAB static tunable parameters lists the static tunable parameters in GAB that are used during module load time. Use the gabconfig -e command to list all such GAB tunable parameters.
You can modify these tunable parameters only by adding new values in the GAB configuration file. The changes take effect only on reboot or on reload of the GAB module.
Table: GAB static tunable parameters
GAB parameter | Description | Values (default and range) |
---|---|---|
numnids | Maximum number of nodes in the cluster | Default: 128 Range: 1-128 |
numports | Maximum number of ports in the cluster | Default: 32 Range: 1-32 |
flowctrl | Number of pending messages in GAB queues (send or receive) before GAB hits flow control. This can be overwritten while cluster is up and running with the gabconfig -Q option. Use the gabconfig command to control value of this tunable. | Default: 128 Range: 1-1024 |
logbufsize | GAB internal log buffer size in bytes | Default: 48100 Range: 8100-65400 |
msglogsize | Maximum messages in internal message log | Default: 256 Range: 128-4096 |
isolate_time | Maximum time to wait for isolated client Can be overridden at runtime | Default: 120000 msec (2 minutes) Range: 160000-240000 (in msec) |
kill_ntries | Number of times to attempt to kill client Can be overridden at runtime | Default: 5 Range: 3-10 |
conn_wait | Maximum number of wait periods (as defined in the stable timeout parameter) before GAB disconnects the node from the cluster during cluster reconfiguration | Default: 12 Range: 1-256 |
ibuf_count | Determines whether the GAB logging daemon is enabled or disabled The GAB logging daemon is enabled by default. To disable, change the value of gab_ibuf_count to 0. The disable login to the gab daemon while cluster is up and running with the gabconfig -K option. Use the gabconfig command to control value of this tunable. | Default: 8 Range: 0-32 |
kstat_size | Number of system statistics to maintain in GAB | Default: 60 Range: 0 - 240 |