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ORA-15081 and ORA-15025: could not open disk (Doc ID 2940278.1)

Last updated on AUGUST 10, 2023

Applies to:

Gen 2 Exadata Cloud at Customer - Version All Versions to N/A [Release All Releases]
Information in this document applies to any platform.


Customer observing below errors in alert logs of all the database residing on the cluster

Errors in file /u02/app/oracle/diag/rdbms/xx/xx/trace/xxx_ora_337424.trc:
ORA-00202: control file: '+DATAC1/XXX/CONTROLFILE/current.848.1131395421'
ORA-15081: failed to submit an I/O operation to a disk
ORA-15081: failed to submit an I/O operation to a disk
ORA-15081: failed to submit an I/O operation to a disk
ORA-15025: could not open disk "o/xx.xx.xx.xx;xx.xx.xx.xx/DATAC1_CD_03_xxxxxexdcl05"
WARNING: Read Failed. group:1 disk:13 AU:34997 offset:16384 size:16384
path:Unknown disk
incarnation:0xf1752c22 synchronous result:'I/O error' ioreason:1811 why:7
subsys:Unknown library krq:0x7f958acf4a18 bufp:0x7f958a306000 osderr1:0xd3 osderr2:0x0 (mirrored read)
IO elapsed time: 0 usec Time waited on I/O: 0 usec
WARNING: failed to read mirror side 1 of virtual extent 0 logical extent 0 of file 848 in group [1.2270536131] from disk DATAC1_CD_03_XXXXEXDCL05 allocation unit 34997 reason error; if possible, will try another mirror side
WARNING: group 1 file 848 block 1 read failed, OSD error 211.


ASM-Scoped Security enabled


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