Now-a-days, we use virtual machines (VMs) a lot, to test operating systems, software, databases etc. as sandboxes - test, play, destroy ... repeat ! I had an interesting learning with Oracle virtualbox (issue & then solution discovery), which I'm sharing here ... it might help someone with similar situation : I had a VM in virtualbox, which I copied into a separate folder, while it was powered off. Now, after the original VM was gone, I wanted to add it as a separate VM with a different name. However, I was seeing this UUID conflict. (UUID already exists) What I did : 1) Created a new empty VM with the desired NAME. 2) Located the new folder, where copy of the VM was there. 3) Ran the commands to change the UUID for each disk-file (.vmdk or others) I had there : "C:\Program Files\Oracle\VirtualBox\vboxmanage.exe" internalcommands sethduuid disk1.vmdk (you have to be in the same directory as the disk files, to run this command. Easy, whereve
The Database Technology market is full of various products, even when we look at just Oracle's line of products - Advanced Security, Advanced Compression, Real Application Clusters (RAC), Real Application Testing (RAT), Exadata & so on ! However, we don't just go out and buy anything - we have to have a need to have certain helper software / features to make our lives easier. How do we assess whether I need one or another ? Here's my humble attempt today to make a checklist for these 4 products (To print-out or view the sheets fully, use the direct links) ... Exadata coming soon :-) : (1) Assessing the need for Oracle Real Application Clusters (RAC) : RAC checklist (2) Assessing the need for Oracle Advanced Security Option (ASO) : ASO checklist sheet1 ASO checklist sheet2 (3) Assessing the need for Oracle Advanced Compression Option (ACO) ACO checklist (4) Assessing the need for Oracle Real Application Testing (RAT) RAT checklist sheet1 RAT