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How to generate a Java thread dump on Linux/Unix?

We always need to Java Therad dump to troubleshoot application server issues. You can use the following command to generate Java thread dump. kill -QUIT or kill -3 You can find more ...

Enable disk in Veritas Volume Manager

Enabling a disk If you move a disk from one system to another during normal system operation, VxVM does not recognize the disk automatically. The enable disk task enables VxVM to identify ...

Reattaching Failed Disks in Veritas Volume Manager

Veritas volume manager troubleshooting guide info. Reattaching failed disks You can perform a reattach operation if a disk could not be found at system startup, or if VxVM is started ...

How do I create a bootable USB pen drive to start a Red Hat Enterprise Linux installation?

The following steps configure a USB pen drive as a boot medium to start the installation of Red Hat Enterprise Linux. 1.Attach the USB pen drive to a system which is already running ...

Solaris Live Upgrade Reference

man pages for all the listed command-line utilities. Activate an inactive boot environment. luactivate Cancel a scheduled copy or create job. lucancel Compare an active boot environment ...

Example to update the boot archive via failsafe boot on sparc systems with configured SVM root mirror

system is configured with Solaris Volume Manager (SVM) root mirror then attention is necessary if using the failsafe boot (boot -F failsafe) on the ‘ok prompt’ environment. In ...

Killing process by name except root

How to kill apache process which are not owned by root. Kill -9 `ps -eaf | grep apache | grep -v root | awk ‘{print $2}’`

HBA port status on Solaris

How to find status of Solaris fcinfo hba-port mpathadm lu

Convert Solaris block to bytes

You always deal with blocks on solaris and if you want to convert to bytes. Here is the size for a block. 512 bytes = 1 block

solaris boot problem with metadb and quick fix – boot with one metadb

If your sun solaris using SVM and if there is a boot problem due to state database, you can do a quick fix. The system will panic if fewer than half of the state database replicas available. ...
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