When using OracleASM in normal or high redundancy, a failed disk is nothing to be concerned with. However, when using AFD, there are several additional actions you need to take into account in order to replace the disk quickly and easily. It is imperative to understand that when using AFD, there are some unavoidable tasks…
I have had a system with Oracle ASM diskgroup from which I needed some space. The idea was to release some disk space, reduce the size of existing partitions, add a new partition and use it – all online(!) This is a grocery list of tasks to do, with some explanation integrated into it. Overview…
When installing Oracle RAC (or in its more modern name – GI) version 11.2.0.1 and above, you can use Oracle ASM DiskGroup as your CRS+Voting file location. It is fairly simple changing the disk membership in Oracle ASM DiskGroup, however, when you face some unknown bugs which prevent you from doing just that, or when you are required…
The goal – connecting multiple Oracle ASM snapshots (same source LUNs, of course) to the same machine. The next process will demonstrate how to do it. Problem: ASM disks use a disk label called ASMLib to maintain access even when the logical disk path might change (like adding a LUN with a lower ID and…
Setting up an Oracle ASM disks is rather simple, and the procedure can be easily obtained from here, for example. This is nice and pretty, and works well for most environments. EMC PowerPath creates meta devices which utilize the underlying paths, as mod_scsi sees them in Linux, without hiding them (unlike IBM’s RDAC, for example)….
