Extremely Slow I/O Performance On Disk Partitions Created Using fdisk DOS Compatible Mode
Last updated on JUNE 16, 2017
Applies to:Oracle Database as a Service - Version N/A to N/A [Release 1.0]
Oracle Compute Cloud Service - Version N/A and later
Information in this document applies to any platform.
Overall I/O performance of attached disks is extremely slow and degrades the performance of applications using such a partition.
View the partition table of the disk using the 'fdisk -ul" command.
A DOS-compatible partition will have a starting sector on a boundary NOT divisible by 1024. For example, if the first partition of a disk is created using DOS-Compatible mode, it will start at sector 63, not 1024 or 2048.
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