WARNING:1 Oracle process running out of OS kernelI/O resources aiolimit=128
(Doc ID 1527983.1)
Last updated on APRIL 09, 2023
Applies to:
Oracle Database - Enterprise Edition - Version 10.2.0.5.0 to 10.2.0.5.0 [Release 10.2]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 Backup Service - Version N/A and later
Information in this document applies to any platform.
Symptoms
The ASM instance crashed and generated several errors in alert log
WARNING:1 Oracle process running out of OS kernelI/O resources aiolimit=128
$cold_ksfdgo()+688<-ksfdaio1()+2848<-kfkUfsIO()+4032<-kfkDoIO()+976<-kfkIOPriv()+624<-kfdIOPriv()+128<-kfdParallelIO()+3408<-kfdDiscoverDeep()+2640<-kfgDiscoverDeep()+512<-kfgDiscoverGroup()+736<-kfgTableCb()+5264<-kfgGrpTableCbInternal()+912<-kfgGrpTableCb()+128
word ksfdaiowt_ [60000000000C7648, 60000000000C764C) = 000000C6
ub4 ksfdaiolmt_ [60000000000C7654, 60000000000C7658) = 00000080 kcfaio * kcfeio_ [60000000000C87E0, 60000000000C87E8) = 00000000 00000000
ub4 kcblmaxaio_ [60000000000C8B24, 60000000000C8B28) = 00000000
Since the crash, multiple trace files with warnings are generated in the asm home:
-rw-r----- 1 ora10g dba 1352 Jan 17 14:40 +asm_ora_16813.trc
-rw-r----- 1 ora10g dba 1352 Jan 17 14:45 +asm_ora_18153.trc
{+ASM} /ora10g/admin/+ASM/udump > grep 'WARNING' *.trc
+asm_ora_16813.trc:WARNING:1 Oracle process running out of OS kernelI/O resources aiolimit=128
+asm_ora_18153.trc:WARNING:1 Oracle process running out of OS kernelI/O resources aiolimit=128
Cause
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In this Document
| Symptoms |
| Cause |
| Solution |