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Exadata: Cell Service crash with RS-7445 [SERV CELLSRV HANG DETECTED] during a flash disk failure (Doc ID 2486713.1)

Last updated on FEBRUARY 26, 2019

Applies to:

Exadata X3-2 Hardware - Version All Versions and later
Oracle Exadata Storage Server Software - Version to [Release 12.1 to 12.2]
Exadata X6-2 Hardware - Version All Versions and later
Exadata X5-2 Hardware - Version All Versions and later
Exadata X4-2 Hardware - Version All Versions and later
Information in this document applies to any platform.


Customers may see Cell Service crash on Storage cells during the flash disk failure. The issues will start with lot of "NO IO COMPLETION ON DISK" messages written for the failing flash disk and Cell service eventually restart. Since the flash disk failed, the subsequent Cell Service restart would detect the failed flash disk as missing. This can result in the drop of the grid disks mapped to the failed flashdisk, in a write-back configuration.





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