Quick Beginnings for DB2 Universal Database for UNIX

Step 2. Update the Kernel Configuration Parameters

To run DB2 for SCO UnixWare 7, you may have to update some kernel configuration parameters; the following minimum values are recommended:

Table 26. SCO UnixWare 7 Kernel Configuration Parameters (Recommended Values)

Kernel Parameter	Recommended Value
msgmax msgmnb msgssz msgmni shmmax shmmni shmseg semmi	65535 (1) 65535 (1) 524288 256 268435456 300 15 1024

Notes:

1. Parameters msgmax and msgmnb should be set at least to 65535.

2. To maintain the interdependency among kernel parameters, change parameters in the same sequence in which they appear in the preceding table.

3. Parameter shmmax should be set to the suggested value in the above table or 90% of the physical memory (in bytes), whichever is higher. For example, if you have 196 MB of physical memory in your system, set shmmax to 184968806 (176*1024*1024).

To change a value, do the following:

1. Enter the scoadmin command to start the System Administration tool.

2. Double-click on the System folder.

3. Double-click on the System Tuner icon.

4. Click on the drop down box and select the Inter-Process Communication (IPC) Parameters.

5. Select the parameter to be changed and enter the new value.

6. Click on OK when you have finished changing all the parameters.

7. Click on the Yes push button to rebuild the kernel.

8. Reboot the system so that the changes can take effect.

[ DB2 List of Books | Search the DB2 Books ]