IBM 000-8697 User Manual
1-50
IBM Informix OnLine Database Server Administrator’s Guide
Configuration Checklist
Configuration Checklist
is a checklist to help you verify that you have correctly completed
the initialization preparation tasks.
Figure 1-3
Checklist to
verify that the
preparation
tasks for OnLine
initialization
have been
completed
correctly
✔
Create user and group informix
The only member of the group informix is user informix. Perform OnLine
administrative actions as user informix.
administrative actions as user informix.
✔
Create raw devices
Do not mount raw devices. Raw devices should not include file systems.
✔
Set device permissions
Each raw device should display informix as its group and owner. Permissions
on each raw device are set to 660 (crw-rw----).
on each raw device are set to 660 (crw-rw----).
✔
Verify UNIX kernel parameters
The recommendations for UNIX kernel parameters included in the machine-
specific ONLINE_5.x file are compatible with your current UNIX kernel
parameters.
specific ONLINE_5.x file are compatible with your current UNIX kernel
parameters.
✔
Verify chunk offsets, if needed
If your system uses track 0 for control information and if the root dbspace or its
mirror is at the start of a partition, check that you included an offset into the
device.
mirror is at the start of a partition, check that you included an offset into the
device.
✔
Verify size of root dbspace
Check that the initial chunk of the root dbspace is large enough to contain the
physical log, all logical logs, and OnLine overhead requirements.
physical log, all logical logs, and OnLine overhead requirements.
✔
Verify OnLine shared-memory size
Check that the size you selected for OnLine shared memory fits within the amount
of shared memory available on your UNIX machine.
of shared memory available on your UNIX machine.