Solaris Troubleshooting : Define a Static Route using routed
In order to do this you must create entries in the /etc/gateways file. The /etc/gateways file has the format of
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Solaris 10 : Service Milestones
They provide a way to group services together. Solaris defines 3 of them (there are others) which roughly relate to the traditional Solaris runlevels: svc:/milestone/single-user >>> init S svc:/milestone/multi-user >>> init 2 svc:/milestone/multi-user-server >>> init 3 In addition, SMF has two pseudo milestones: none >>> Do...
VCS : Configure Oracle database in VCS environment
Configure an Oracle database on shared disks using the Database Configuration Assistant. You need to configure the database only once, from the node on which you installed Oracle first. If you configured ASM for Oracle database storage, configure the Oracle database on ASM disk groups.
RHEL : Examining Red Hat Linux kernel state using Sysrq key combinations
The internal state of a kernel based on Unix can provide valuable information on current system state. If a user process, or the kernel, is hanging, then the more information that can be gathered at that point, the greater the chance of a good diagnosis. Under...
Solaris X86 – SVM Root Mirroring
Step by Step procedure for SVM root mirroring: Root and mirror disks, are here referred to as primary and secondary disks respectively. 1. In this step, you will need to boot cdrom in single user mode off the Solaris media or network. You will need to...
Solaris Solstice DiskSuite: recover a metadevice that is in an unstable state OR how to recreate metadevice without losing data
When a metadevice goes into an undefined state, recovery of metadevice with meta commands is problematic. The workaround is to re-create the metadevice after carefully recording the current configuration from metastat -p. The procedure is a bit risky if not followed carefully, so keep the backup handy....
VCS : Sample VCS configuration File with Multiple Oracle Instances
Sample VCS configuration file for multiple Oracle instances (single listener)
Solaris Volume Manager (SVM) – Adding Mirror to a metadevice housing soft partitions.
To add a mirror to a metadevice with one or more soft partitions can be done with a short amount of downtime, but it’s a bit tricky. The best way to illustrate this procedure is with an example. In the example below, we’ll use the following...
Solaris Troubleshooting SDS/SVM: How to Replace a Disk which contained Soft Partitions with
When trying to access a soft partition after a disk replacement, the metareplace command or any direct I/O to a soft partition will fail with the following types of errors: In an instance where d68 is the mirror device, and d28 is a soft partition inside one of...
Solaris Troubleshooting : Display 3 timestamps ( at, ct, mt) for a file – in solaris
First, an explanation of the time stamps: mtime – time the contents of file was last modified (written to). atime – time the file was last used/accessed (read or executed) ctime – time the inode of the file was last changed (like changing permissions). ctime also...
