All customers are recommended to apply the fix.
Summary: Reserved kernel memory amount
vm.min_free_kbytes may be set incorrectly. As a result, Oracle Database may report
ORA-27301: OS failure message: No buffer space available error with disruption to the database operation.
ORA-27301: OS failure message: No buffer space availableerror reported by the database
- On database nodes
sysctl -a | grep vm.min_free_kbytesreturns value of 524288, which is a default value from
/etc/sysctl.d/50-flashgrid.conf. On database nodes it should return a larger value.
- FlashGrid Storage Fabric
- FlashGrid cluster for Azure/AWS/GCP
flashgrid-sf RPM versions 19.5.x through 19.6.432
The issue will happen if kernel parameters are re-loaded manually after system boot. Also, on Azure it may be triggered by WALinux agent.
flashgrid-sf RPM to the version 19.6.448 or newer on all nodes
Note: Need to reboot each node after the RPM upgrade
The RPM update procedure must follow the recommended steps described in the knowledge base articles: