Oracle has released a critical patch for storage server versions 22.214.171.124.x through 126.96.36.199.1. While 188.8.131.52.1 was released last week, there were a few oneoff patches from 184.108.40.206.0 that didn't seem to make it in to the release. Oracle has since released 220.127.116.11.2 (patch #13513611, supplemental note #1388400.1). Similar to 18.104.22.168.1, this release looks to patch several outstanding issues. Here's the list of bugs fixed from the readme for 22.214.171.124.2:
12764521 INFINIBAND DIAG COMMANDS (LIKE IBDIAGNET AND IBNETDISCOVER) ARE NOT WORKING 13083530 10 GB-E BONDED INTERFACES FAILING- EXADATA 13410353 AFTER UPGRADE TO 126.96.36.199 INFINIBAND CMDS IBDIAGNET, IBNETDISCOVER NOT WORKING 13489032 CHECKHWNFWPROFILE DOES NOT DETECT FAILED FLASH FDOM 13489445 ORA-600 [OSSMISC:OSSMISC_TIMER] WHEN NTPD DETECTED 6 MILLISECOND TIME DIFFERENCE 13512932 FIX INSTALLED WORKAROUND FOR NTP UPDATE BUG 13489445
As you can see, the previously mentioned bugs have been fixed. There's another bug that was fixed in 188.8.131.52.1 that could be an issue for anybody running 184.108.40.206.x through 220.127.116.11.0. This bug (13454147) can remove the flashcache from a cell that has an uptime of 6 months or greater. Fortunately, Oracle has released a patch that includes these critical issues in the event that you can't quickly upgrade to 18.104.22.168.2 - I wouldn't advise running this version for at least a couple weeks...I always advise clients to wait that long for the early adopters to weed out any major issues.
Applying the critical patch only takes a minute, and doesn't take the storage servers or database instances offline. After it's done, a restart of cellsrv needs to be scheduled, but that can be done in a rolling fashion. Read on for an example of applying this patch. As always, do not apply any patch to a production system before appropriately testing against a non-production system!