Purpose
The acfsutil tune command displays the value of a specific tunable parameter or all Oracle ACFS tunable parameters, or sets the value of a tunable parameter in a persistent manner on a particular node.
Syntax and Description
acfsutil tune -h acfsutil tune [tunable_name] acfsutil tune tunable_name=value
acfsutil tune -h displays help text and exits.
Table 16-101 contains the options available with the acfsutil tune command.
Table 16-101 Options for the acfsutil tune command
| Option | Description |
|---|---|
|
|
Specifies the name of the tunable parameter. |
|
|
Specifies the value for a tunable parameter. |
The Oracle ACFS tunable parameter AcfsMaxOpenFiles limits the number of open Oracle ACFS files on Windows and AIX. Normally you do not have to change the value of this tunable parameter; however, you may want to consider increasing the value if you have a large working set of files in your Oracle ACFS file systems.
The Oracle ACFS tunable parameter AcfsMaxCachedFiles sets the maximum number of closed files that remain cached in memory on Windows and AIX. Normally you do not have to change value of this tunable parameter; however, you many to consider changing the value to get better performance.
Changing a tunable parameter has an immediate effect and persists across restarts. You must be a root user or the Windows Administrator to change the value of a tunable parameter.
Examples
The first command prints Oracle ACFS tunable parameters. The second command changes the value of a tunable parameter.