System administrators will often reboot their boxes because of certain need like patch installation and kernel parameter change. Below is a guide to properly shutdown and reboot the system. THE PRE-WORK 1. Get important system information: Common Information needed# hostname# date# model# uname -a# uptime# who -r2. Gather filesystem information # showmount -eshows all exported […]

No outage required , if you have online jfs. If you do not have online jfs , do all the following in LVM maintenance mode.Note: this will only work if SWAP is NOT the next lvol after / a. Login as root.b. Find out a free disk / un mirror the rootvg and make that

You can to use the /usr/contrib/Q4/bin/q4 utility. cd /var/adm/crash/crash.0 # /usr/contrib/Q4/bin/q4 -p . (note the “dot” at the end of the command) At the q4> prompt, type:q4> run Analyze AU > ana.out q4> run WhatHappened -HANG > what.out NOTE:  ctrl-c can interrupt these two commands, which may take several minutes to process. To exit q4:q4>

A quick guide to extend an LVM with a VXFS Filesystem. 1. Verify OnLineJFS is installed# swlist -l product | grep -i vxfs# swlist -l product | grep -i onlineLook for OnlineJFS or AdvJournalFS 2. It is a good practice to defrag the filesystem first before extending# fsadm -d – D -e – E /mountpoint

A World Wide Name (WWN) or World Wide Identifier (WWID) is a unique identifier which identifies a particular Fibre Channel, Advanced Technology Attachment (ATA) or Serial Attached SCSI (SAS) target. Each WWN is an 8 byte number derived from an IEEE OUI and vendor-supplied information. >There are two formats of WWN defined by the IEEE:

Starting in DB2 V9.1 when you create a database, automatic storage tablespaces are created by default. Therefore, users may unknowingly create an “automatic storage database” when they first create the database. When the database is backed up with the intention to restore it under a new instance or on another server, users maybe unaware of

Oracle Application Server 10g Installation.pdf Original post blogged on b2evolution.

If you suspect that hardware problems are the reason for errors in your installation, analyze the system log. To do this, enter the command:errpt -a | more Original post blogged on b2evolution.

To mount directories via NFS from the host on which the central instance runs, log on as user root and proceed as follows:On the host on which the main instance runs:1. Enter the command:/usr/sbin/share2. Edit the file /etc/dfs/dfstab to add file systems shared via NFS:vi /etc/dfs/dfstabAdd the following line for each file system, for example:share