IBM Support

IV65049: ONLY 8192 FILE DESCRIPTORS MAY BE REGISTERED WITH A SELECTOR OBJ ECT ON AIX

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APAR status

  • Closed as program error.

Error description

  • Error Message: On AIX, only 8192 file descriptors may be
    registered with a Selector i.e with a java.nio.Channels.Selector
    object. Registration of file descriptors beyond this limit does
    not lead to failure. However, no (valid) ready events are
    returned for all such file descriptors.
    .
    Stack Trace: N/A
    .
    It is possible to set the limit on the number of file
    descriptors registered with a Selector to be equal to the
    maximum number of open file descriptors per process.
    

Local fix

Problem summary

  • The NIO Selector implementation on AIX allowed only 8192
    file-descriptor registrations.
    

Problem conclusion

  • This limit was wrongly applied and it has been removed. Now,
    OPEN_MAX(the maximum open descriptors allowed by the underlying
    operating system) registrations may be done.
    .
    This APAR will be fixed in the following Java Releases:
       7    SR9       (7.0.9.0)
       7 R1 SR3       (7.1.3.0)
    .
    Contact your IBM Product's Service Team for these Service
    Refreshes and Fix Packs.
    For those running stand-alone, information about the Service
    Refreshes and Fix Packs can be found at:
               https://www.ibm.com/developerworks/java/jdk/
    

Temporary fix

Comments

APAR Information

  • APAR number

    IV65049

  • Reported component name

    JAVA CLASS LIBS

  • Reported component ID

    620700130

  • Reported release

    700

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2014-09-19

  • Closed date

    2014-11-24

  • Last modified date

    2014-11-24

  • 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

  • R700 PSY

       UP



Document information

More support for: Runtimes for Java Technology
Java Class Libraries

Software version: 700

Reference #: IV65049

Modified date: 24 November 2014