Veritas Storage Foundation™ for Oracle 5.0.1 Administrator's Guide

Recreating Quick I/O files using qio_recreate
You can use the qio_recreate command to automatically recreate Quick I/O
files when the database is recovered.
Before converting files to Quick I/O, the following conditions must be met:
■ To use this command for Oracle, the ORACLE_SID environment
variable must be set.
■ You may be logged in as either the database administrator or root.
Prerequisites
■ The command expects to find a file named in the directory where
the command is run. The mkqio.dat file contains a list of the Quick
I/O files used by the database and their sizes. If the file is not in
the directory, you will be prompted to create it using .
■ The qio_recreate command supports conventional Quick I/O
files only (that is, Quick I/O files in the following form: file -->
.file::cdev:vxfs:). In creating a Quick I/O file, the
qio_convertdbfiles command renames the regular VxFS file,
file, to .file with the Quick I/O extension (:cdev::vxfs:)
and creates a symbolic link to it. By default, the symbolic link uses
a relative path name.
■ There are no options for the qio_recreate command and no
output is returned when the command runs successfully.
■ See the qio_recreate(1M) manual page for more information.
Usage notes
The qio_recreate command follows these rules in recreating Quick I/O files when
a database is recovered:
■ If a Quick I/O file (.file::cdev:vxfs:) is missing, then qio_recreate recreates
it.
■ If both a symbolic link (file) and its associated Quick I/O file
(.file::cdev:vxfs:) are missing, qio_recreate recreates both the symbolic
link and the Quick I/O file.
■ If a symbolic link (file) from a regular VxFS file to its associated Quick I/O
file (.file::cdev:vxfs:) is missing, then qio_recreate recreates the symbolic
link.
■ If a Quick I/O file (.file::cdev:vxfs:) is missing and the regular VxFS file
that is symbolically linked to it is not the same one that originally created it,
then qio_recreate issues a warning message and does not recreate the Quick
I/O file.
■ If a Quick I/O file (.file::cdev: vxfs:) is smaller than the size listed in
mkqio.dat, qio_recreate issues a warning message.
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