Handled a ntp issue these days and I want to share my learning here as I could not find the right and detail explanation until now. The error message was like the title and when I checked the ntp serv...

Long time ago, when I studied the Veritas LVM, I knew the PVG term which meant physical volume group and the physical volumes in the same PVG were from the same SAN or same disk. Usually there is a si...

On the day before last day, I helped my friend to handle an Oracle block corruption issue of her SAP system. From the alert log file, I found many error messages of corrupted blocks, and I tried to sc...