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Disk Operations / RMAN / Datapump to NFS Slow After Applying 19.24 RU (Doc ID 3062229.1)

Last updated on DECEMBER 05, 2024

Applies to:

Oracle Database - Enterprise Edition - Version 19.24.0.0.0 to 19.25.0.0.0 [Release 19]
Information in this document applies to any platform.

Symptoms

Performance impact seen in operations (RMAN, Datapump) to NFS after applying 19.24 RU.

Datapump will show increased waits on the following SQL:

BEGIN
SYS.KUPW$WORKER.MAIN('SYS_EXPORT_TABLE_01', 'EXAMPLE', 0, 0);
END;

Event waited on                 Times     Max. Wait          Total Waited
------------------------------ Waited    ----------            ------------
Disk file operations I/O         22          0.03                    0.06
db file sequential read           7           0.00                    0.00
Datapump dump file I/O      202        10.02                  561.06

Performance discrepancy only appears with 19.24 RU and is resolved if reverted to 19.23.

Performance discrepancy only appears with NFS and is not present with operation to local drive.

Changes

Applying the 19.24 RU.

Cause

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In this Document
Symptoms
Changes
Cause
Solution
References


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