ORA-27063 and SVR4 ERROR: 5: I/O ERROR ON SUN SOLARIS OR ASM DISKGROUP NOT MOUNT WITH ORA-15036 AFTER UPGRADING TO >= 11.2.0.4

(Doc ID 1478482.1)

Last updated on OCTOBER 31, 2016

Applies to:

Oracle Database - Enterprise Edition - Version 11.2.0.1 to 11.2.0.4 [Release 11.2]
Sun SPARC Sun OS
Oracle Solaris on x86-64 (64-bit)

Symptoms

1. The following similar error occurs either in database alert.log or ASM alert.log
 

ORA-27063: number of bytes read/written is incorrect
SVR4 Error: 5: I/O error
Additional information: -1
Additional information: 1048576
WARNING: Read Failed. group:1 disk:5 AU:262110 offset:0 size:1048576
path:/dev/rdsk/c5t600601602AD02800E88955BE5942E111d0s6
     incarnation:0xd848f564 asynchronous result:'I/O error'
     subsys:System iop:0xffffffff7de80140 bufp:0xffffffff78c0fe00 osderr:0x0 osderr1:0x0

 


2. kfod output shows the size of the affected disk as bigger than the error location.
    - In this example, AU size for the affected diskgroup is 4M.
    - 262110 is an example location from the alert.log above.
    - error location is : 262110 * 4M = 1,048,440M


Actual size for slice 6: 2146894470 sectors for slice 6  * 512 byte ~= 1,048,288 M

Cause

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