APAR status
Closed as program error.
Error description
Error Message: * ** ASSERTION FAILED ** at MemorySubSpace.cpp:188: ((false && (reason > LOA_EXPAND_LAST_RESIZE_REASON))) . Stack Trace: N/A .
Local fix
The issue can be prevented by disabling LOA(Large Object Area) by adding -Xnoloa as JVM command line argument or it can be avoided by setting minimum heap size to 8MB(-Xms8m) or above
Problem summary
The assertion is thrown when GC is trying to increase the LOA size smaller than minimum LOA size(64K)
Problem conclusion
The GC code has been updated to maintain LOA size as 0, when calculated LOA size is smaller than 64K . This APAR will be fixed in the following Java Releases: 8 SR5 FP21 (8.0.5.21) Except with z/OS where this APAR is fixed in: 8 SR5 FP22 (8.0.5.22) . Contact your IBM Product's Service Team for these Service Refreshes and Fix Packs. For those running stand-alone, information about the available Service Refreshes and Fix Packs can be found at: https://www.ibm.com/developerworks/java/jdk/
Temporary fix
Comments
APAR Information
APAR number
IJ07997
Reported component name
J9 COMMON CODE
Reported component ID
620700127
Reported release
270
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2018-07-24
Closed date
2018-07-31
Last modified date
2018-09-19
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
Fix information
Fixed component name
J9 COMMON CODE
Fixed component ID
620700127
Applicable component levels
R270 PSY
UP
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Document Information
Modified date:
22 February 2022