A manual or automatic rebalance may clear the problem if the disk group maintains redundancy. Check the background work status:
This will initiate a rebalance operation to resync the data. asm health checker found 1 new failures updated
The potential causes for such an alert are numerous, ranging from the benign to the catastrophic. It could be a transient I/O error caused by a hiccup in the storage area network (SAN), or it could be the early warning sign of a physical disk sector corruption. In some cases, it may relate to a mismatch in ASM attributes following a patch or a configuration drift. Regardless of the root cause, the Health Checker acts as the canary in the coal mine. By flagging the failure before the database crashes or data is corrupted, it provides the invaluable commodity of time. A manual or automatic rebalance may clear the
The health checker had already updated the status, signaling the ASM instance to prepare for a "drop and rebalance". The Turning Point It could be a transient I/O error caused