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| Using ODM, Cached ODM, Quick IO, and Cached IO for the Oracle database in a VVR environment | ||
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| Prev | Deploying Storage Foundation for Databases (SFDB) tools in a replicated environment | Next |
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| Using ODM, Cached ODM, Quick IO, and Cached IO for the Oracle database in a VVR environment | ||
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| Prev | Deploying Storage Foundation for Databases (SFDB) tools in a replicated environment | Next |
Fast IO methods such as ODM, Cached ODM, Quick IO and Cached Quick IO are used for better application performance.
When using SFDB tools in a global environment replicated by VVR:
Using ODM and Quick IO for Oracle at the remote site does not require replicating the SFDB repository and hence there is no need to replicate the repository.
It is not necessary to use the same IO method at the primary and the remote sites. However if you need the same application performance at the remote site you may want to use same IO method at remote site.
There is no need to run SFDB commands qio_getdbfiles and qio_convertdbfiles because the Quick IO files are replicated.
Best practices for using ODM or Quick IO with Oracle:
Make sure you use same version of Oracle at the primary and the remote site.
Make sure you enable ODM by linking the proper ODM library at the remote site.
Quick IO files will be replicated as Quick IO files at the remote site and hence no extra configuration is required. However, if you are using Cached Quick IO, and you would like to use Cached Quick IO at the remote site, then you need to change the mount properties using the qioadmin command and also need to copy the /etc/vx/qioadmin file from the primary to the remote.