APAR status
Closed as program error.
Error description
Error Message: IBM Health Center profiles shows up the hottest methods being invoked from sun/nio/cs/ext/ExtendedCharset.isSwapLF(). System.getProperty - System.getProperty (100%) - Boolean.getBoolean (100%) - GetBooleanAction.run (100%) - ExtendedCharsets.isSwapLF (100%) . Stack Trace: N/A .
Local fix
Problem summary
sun/nio/cs/ext/ExtendedCharset.isSwapLF() method is expected to check for the change of value of ibm.swapLF property every time as it can get set any time programmatically. This makes it a performance bottleneck. Prior to this APAR, if the value of the ?ibm.swapLF? property was set as ?true?, either through the command line or programmatically, it was cached and a change to it did not take effect. However, if the value was not set, or set explicitly as ?false?, it was repeatedly checked for by ExtendedCharset.isSwapLF().
Problem conclusion
This APAR introduces a new value for the ?ibm.swapLF? property, called ?disable?. The new value is to be used if the user does not want to enable the swapLF functionality at all. Note that this is different from setting the value as ?false?, or to not setting it explicitly, in which cases it must be possible to change it to ?true? by setting the property programmatically. . This APAR will be fixed in the following Java Releases: 8 SR6 FP25 (8.0.6.25) . 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
IJ29286
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
2020-11-12
Closed date
2021-01-27
Last modified date
2021-01-27
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
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Document Information
Modified date:
21 February 2022