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Wrong Disk I/O when review using OEM

in Enterprise Manager Generic (MOSC) 3 commentsAnswered ✓

Oracle 19.21

OEM Enterprise Manager Cloud Control 13c Release 5 Update 19

When I review the top Disk I/O Hosts across all the hosts. Some of the hosts have more than 100K / second disk I/O performance.

When I dug further into this issue, found the disk I/O calculated for all the disks irrespective of the actual disk/LVM/soft links.

For example: It reports on SDB, SDB1, and DM-1. SDB1 is created under SDB. SDB1 is linked to the Oracle Home file system. DM-1 is a soft link to the Oracle Home file system.

sdb                                                                        8:16     0   775G  0 disk

└─sdb1                                                                     8:17     0   775G  0 part

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