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ORA-01115 ORA-01110 ORA-27091 ORA-27072 Error: 5: I/O error (Doc ID 559697.1)

Last updated on AUGUST 11, 2020

Applies to:

Oracle Database - Enterprise Edition - Version 9.2.0.8 and later
Oracle Database Cloud Schema Service - Version N/A and later
Oracle Database Exadata Cloud Machine - Version N/A and later
Oracle Cloud Infrastructure - Database Service - Version N/A and later
Oracle Database Exadata Express Cloud Service - Version N/A and later
IBM AIX on POWER Systems (64-bit)
***Checked for relevance on 02-Jul-2016***

IBM AIX Based Systems (64-bit)



Symptoms

After patching the OS with Patch IBM Technology Level 6 (5300-06) or Level 7 (5300-07), the application log started reporting the following errors:

ORA-01115: IO error reading block from file <file id> (block # <block number>)
ORA-01110: data file <file id>: <file name>
ORA-27091: skgfqio: unable to queue I/O
ORA-27072: skgfdisp: I/O error
IBM AIX RISC System/6000 Error: 5: I/O error

- The errors are not reported in the alert log file.
- Running dbv against datafiles from the error messages shows no errors.
- All the mandatory OS patches are applied.
- Oracle patch for <Bug 5496862> - IO READING PROBLEMS AFTER INSTALLING IBM TECHNOLOGY LEVEL 5 (5300-05) was installed before patching the OS.


Changes

Patch IBM Technology Level 6 (5300-06) or higher was applied to the OS.

Cause

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In this Document
Symptoms
Changes
Cause
Solution
References

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