APAR status
Closed as program error.
Error description
Error Message: No errors reported. Data corruption Issue seen. . Stack Trace: N/A .
Local fix
Problem summary
This issue happens on Java8 and Java7 for z/OS. The z/OS specific C function send_file is changing the file pointer position though as per the API documentation (http://w3.hursley.ibm.com/java/docs/java7/api/java/nio/channels /FileChannel.html#transferTo) the "Bytes may be read or written at an absolute position in a file in a way that does not affect the channel's current position."
Problem conclusion
Code for resetting the file position is already present but was not getting executed as the method transferToDirectlyNeedsPositionLock of FileDispatcherImpl.java, returned false for all platforms. The method transferToDirectlyNeedsPositionLock was modified to return true in case of z/OS. . This APAR will be fixed in the following Java Releases: 8 SR6 FP20 (8.0.6.20) 7 SR10 FP75 (7.0.10.75) 7 R1 SR4 FP75 (7.1.4.75) . 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
IJ28836
Reported component name
JAVA CLASS LIBS
Reported component ID
620700130
Reported release
800
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2020-10-20
Closed date
2020-10-21
Last modified date
2020-10-31
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
JAVA CLASS LIBS
Fixed component ID
620700130
Applicable component levels
R800 PSY
UP
R700 PSY
UP
[{"Business Unit":{"code":"BU059","label":"IBM Software w\/o TPS"},"Product":{"code":"SSNVBF","label":"Runtimes for Java Technology"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"8.0","Line of Business":{"code":"LOB36","label":"IBM Automation"}}]
Document Information
Modified date:
22 February 2022