CHAPTER 3 Configuring the Operating System

 

 

 

 

4

At the UNIX prompt, execute the following statements as “root”. The user

 

 

ID of the user who is starting Adaptive Server and Backup Server must be

 

 

the owner of the /dev/async directory.

HP-UX 11.23

This step is mandatory for HP users.

 

To improve I/O performance on character or raw block devices, enable

 

asynchronous I/O by installing the HP asynchronous I/O driver from SAM. For

 

help with installing this driver, contact your operating system administrator or

 

HP technical support.

 

 

 

Note Before executing the following instructions, shut down Adaptive Server

 

(or SQL Server).

 

 

 

 

1

To launch the Kernel Configuration use kcweb -F.

 

2

Select Modules.

 

3

Select asyncdsk and change the next boot to static.

 

4

Rebuild the kernel, and reboot the system.

 

5

Execute the following commands using the userid root:

 

 

#/etc/mknod/dev/async c 101 4

 

 

#chmod 0660/dev/async

 

 

#chown <uid> /dev/async

 

 

#/etc/setprivgrp <ugrp> MLOCK

 

 

Where:

 

 

<uid> is the identification (user ID) used by the user that is booting

 

 

Adaptive Server.

 

 

<ugrp> is the user group for the sybase userid.

 

6

At the UNIX prompt, execute the following statements as “root”. The user

 

 

ID of the user who is starting Adaptive Server and Backup Server must be

 

 

the owner of the /dev/async directory.

HP-UX on Itanium

To verify that the async I/O is active on the Itanium machine:

 

1

Log in as root.

 

2

Issue the command:

 

 

# kcmodule -a grep aync

 

 

Result: asyncdsk static required

 

 

or you can also use the following:

Configuration Guide

39

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Sybase DC35823-01-1500-04 manual Owner of the /dev/async directory, To launch the Kernel Configuration use kcweb -F, Where