ORA-15040 ORA-15042 with EXTERNAL redundancy Diskgroup
A colleague was working on an ASM issue (Standalone one, Version 11.2.0.3 on AIX) at one of the customer sites. Later on, I also joined him. The issue was that the customer added few news disks to an existing diskgroup. Everything went well and the rebalance kicked in. After some time, something happened and all of a sudden the diskgroup was dismounted. While trying the mount the diskgroup again, it was giving ...