PI62470: Z/OS EXPLORER INTERNAL DEFECTS AND ENHANCEMENTS

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• Z/OS EXPLORER INTERNAL DEFECTS AND ENHANCEMENTS
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: 01.All zOS Explorer users                    *
  *                 02.All zOS Explorer users                    *
  *                 03.All zOS Explorer users                    *
  *                 04.All zOS Explorer users                    *
  *                 05.All zOS Explorer users                    *
  ****************************************************************
  * PROBLEM DESCRIPTION: 01.When running the RSE daemon, there   *
  *                         may be the ICH408I messages in the   *
  *                         syslog indicating INSUFFICIENT       *
  *                         AUTHORITY TO STATVFS                 *
  *                                                              *
  *                         When using a Remote z/OS search      *
  *                         from the zOS client, the RSE Daemon  *
  *                         will check for authority under the   *
  *                         RSE Daemon. The RSE Daemon may not   *
  *                         have execute authority on the        *
  *                         parent folder for the user.          *
  *                      02.In zOS Explorer, FEK221E errors may  *
  *                         be raised when generating FEKLOGS    *
  *                         using the operator command when      *
  *                         java code page is set to some        *
  *                         European code page.                  *
  *                      03.In zOS Explorer attempts to save a   *
  *                         PDS member may fail with error:      *
  *                         command C_RESET_MVS_FILE_SYSTEM is   *
  *                         not available.                       *
  *                      04.zOS Explorer daemon may raise an     *
  *                         abend 0C4 in function tfree and JNI  *
  *                         startProcess()                       *
  *                      05.Enqueued temporary datasets used by  *
  *                         RSE are not being released by the    *
  *                         RSE processes and therefore not      *
  *                         being able to cleanup while the RSE  *
  *                         processes are running.               *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  01.Some threads in the RSE server run in daemon's user id, as
     they are expected to run as the login user id. When these
     threads try to write user log output, the message is output.
  02.RSE server invokes a shell process to process a feklog
     request and it sends the shell process the command string
     including meta characters such as |(or). The code point for
     a meta character in European code page is not the same as US
     English code page (IBM-037 or IBM-1047). When JRE default
     code page is set to a European code page such as Cp1147, RSE
     generates the command string in the European code page and
     the shell process that is running in US English locale
     misunderstands the meta characters.
  03.There was a timing issue in the initialization of mvs file
     subsystem. That caused some command information not passed
     to client in heavily loaded environment.
  04.In zOS Explorer, the daemon process may raise an abend 0C4
     in function tfree and startProcess()
  05.Exclusive enqueues on SYSDSN are created for temporary files
     that are used by the RSE thread pool processes when filters
  01.When running the RSE daemon, there
     may be the ICH408I messages in the
     syslog indicating INSUFFICIENT
     AUTHORITY TO STATVFS
  
     When using a Remote z/OS search
     from the zOS client, the RSE Daemon
     will check for authority under the
     RSE Daemon. The RSE Daemon may not
     have execute authority on the
     parent folder for the user.
  02.In zOS Explorer, FEK221E errors may
     be raised when generating FEKLOGS
     using the operator command when
     java code page is set to some
     European code page.
  03.In zOS Explorer attempts to save a
     PDS member may fail with error:
     command C_RESET_MVS_FILE_SYSTEM is
  01.When running the RSE daemon, there
     may be the ICH408I messages in the
     syslog indicating INSUFFICIENT
     AUTHORITY TO STATVFS
  
     When using a Remote z/OS search
     from the zOS client, the RSE Daemon
     will check for authority under the
     RSE Daemon. The RSE Daemon may not
     have execute authority on the
     parent folder for the user.
  02.In zOS Explorer, FEK221E errors may
     be raised when generating FEKLOGS
     using the operator command when
     java code page is set to some
     European code page.
     are expanded. These enqueues are not being cleaned up until
     the RSE server is recycled.
  
     RSE server calls DYNALLOC macro to allocate a temporary data
     set on a specific volume serial at first. Then it calls
     RDJFCB and OPEN TYPE=J to override the data set name with a
     special name for vtoc (44X'04'). As the default, the
     replaced name is written back to the system JFCB but the
     previous temporary data set name is forgot without adjusting
     the enqueue status. Even if RSE server deallocates the file
     in JFCB, it is a vtoc name and the enqueue on a temporary
     data set remains.
  03.In zOS Explorer attempts to save a
     PDS member may fail with error:
     command C_RESET_MVS_FILE_SYSTEM is
     not available.
  04.zOS Explorer daemon may raise an
     abend 0C4 in function tfree and JNI
     startProcess()
  05.Enqueued temporary datasets used by
     RSE are not being released by the
     RSE processes and therefore not
     being able to cleanup while the RSE
     processes are running.
  

Problem conclusion

• 01.zOS Explorer server is updated to let the threads for mvs
     miner run as the login user id.
  02.RSE sever is updated to generate the command string in
     IBM-1047 to be passed to the shell process processing feklog
     request.
  03.RSE server is updated to pass client required command
     information in heavily loaded environment.
  04.RSE server code is updated to call tfree() only if the
     pointer points the allocated heap area.
  05.RSE server is changed to set the bit JFCNWRIT in the
     JFCBTSDM field to 1, not to write back the replaced JFCB to
     the system JFCB. Though setting JFCNWRIT to replace a
     regular data set name is not recommended as documented, it
     should not cause errors for vtoc data set name.
  

Temporary fix

Comments

APAR Information

• APAR is sysrouted FROM one or more of the following:

• APAR is sysrouted TO one or more of the following:

  UI38045

Modules/Macros

•    FEKFCORE FEKFCOR6 FEKFMAIN FEKFMAI6 FEKFMINE
  FEKFT002 FEKFZOS
  

Fix information

• Fixed component name

  EXP FOR Z/OS HO

• Fixed component ID

  5655EXP23

Applicable component levels

• R300 PSY UI38045

     UP16/06/01 P F702

Fix is available

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