z OS Basics Q amp A on a Dump using IPCS

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Trademarks, The following are trademarks of the International Business Machines Corporation in the United States and or other. z Architecture,Registered trademarks of IBM Corporation. The following are trademarks or registered trademarks of other companies. Java and all Java related trademarks and logos are trademarks of Sun Microsystems Inc in the United States and other countries. Linux is a registered trademark of Linus Torvalds in the United States other countries or both. Microsoft Windows and Windows NT are registered trademarks of Microsoft Corporation. UNIX is a registered trademark of The Open Group in the United States and other countries. SET and Secure Electronic Transaction are trademarks owned by SET Secure Electronic Transaction LLC. All other products may be trademarks or registered trademarks of their respective companies. Performance is in Internal Throughput Rate ITR ratio based on measurements and projections using standard IBM benchmarks in a controlled environment The actual throughput that any user will experience will vary depending upon. considerations such as the amount of multiprogramming in the user s job stream the I O configuration the storage configuration and the workload processed Therefore no assurance can be given that an individual user will achieve throughput. improvements equivalent to the performance ratios stated here. IBM hardware products are manufactured from new parts or new and serviceable used parts Regardless our warranty terms apply. All customer examples cited or described in this presentation are presented as illustrations of the manner in which some customers have used IBM products and the results they may have achieved Actual environmental costs and performance. characteristics will vary depending on individual customer configurations and conditions. This publication was produced in the United States IBM may not offer the products services or features discussed in this document in other countries and the information may be subject to change without notice Consult your local IBM business. contact for information on the product or services available in your area. All statements regarding IBM s future direction and intent are subject to change or withdrawal without notice and represent goals and objectives only. Information about non IBM products is obtained from the manufacturers of those products or their published announcements IBM has not tested those products and cannot confirm the performance compatibility or any other claims related to non. IBM products Questions on the capabilities of non IBM products should be addressed to the suppliers of those products. Prices subject to change without notice Contact your IBM representative or Business Partner for the most current pricing in your geography. SHARE Session August 2010 2010 IBM Corporation,A quick IPCS review. Q A s on a Dump using IPCS,SHARE Session August 2010 2010 IBM Corporation. You are a beginner in using IPCS,You were given a dump to review.
How do you start to investigate the problem,How do you answer common questions on the dump. using IPCS,SHARE Session August 2010 2010 IBM Corporation. The purpose of this presentation is not to provide you with a comprehensive procedure for. diagnosing problems but rather to familiarize you with some of the IPCS commands that can be. used on a dump,IPCS Basic Navigation,Main menu after invoking IPCS dialog from ISPF. Customizable like other ISPF dialogs, z Panels shipped by default in SYS1 SBLSPNL0 pointed to by ISPPLIB. z OS 01 11 00 IPCS PRIMARY OPTION MENU,0 DEFAULTS Specify default dump and options.
1 BROWSE Browse dump data set,2 ANALYSIS Analyze dump contents. 3 UTILITY Perform utility functions,4 INVENTORY Inventory of problem data. 5 SUBMIT Submit problem analysis job to batch,6 COMMAND Enter subcommand CLIST or REXX exec. T TUTORIAL Learn how to use the IPCS dialog,X EXIT Terminate using log and list defaults. SHARE Session August 2010 2010 IBM Corporation, This is the main menu that s presented when IPCS is invoked in ISPF Dialog Mode We ll discuss.
some of the options during this presentation Note that the z OS release level is at the top of the. menu You should use the same level of IPCS as the dump. You can jump to an OPTION from any IPCS command line by entering n where n is the. OPTION For example entering 0 on the IPCS command line will jump to IPCS OPTION 0. IPCS Commands,There are 2 basic types of IPCS commands. IPCS Subcommands,z used to analyze and format data from the dump. z can be issued from IPCS Primary Option 6 or from the command. line prefixed by IP,IPCS Dialog Primary Commands, z used to process the data from the current IPCS output. z can be issued from the command line with no IP prefix required. SHARE Session August 2010 2010 IBM Corporation, Instead of navigating through some of the IPCS panels one can invoke IPCS commands to. accomplish the same tasks on a dump, There are 2 basic types of IPCS commands subcommands and primary commands Subcommands.
work on the dump and primary commands work on the current IPCS output. IPCS Option 6 COMMAND Panel,Lists many of the IPCS subcommands available. IPCS Subcommand Entry, Enter a free form IPCS subcommand or a CLIST or REXX exec invocation below. IPCS Subcommands and Abbreviations,ADDDUMP DROPDUMP DROPD LISTMAP LMAP RUNCHAIN RUNC. ANALYZE DROPMAP DROPM LISTSYM LSYM SCAN,ARCHECK DROPSYM DROPS LISTUCB LISTU SELECT. ASCBEXIT ASCBX EQUATE EQU EQ LITERAL SETDEF SETD,ASMCHECK ASMK FIND F LPAMAP STACK.
CBFORMAT CBF FINDMOD FMOD MERGE STATUS ST,CBSTAT FINDUCB FINDU NAME SUMMARY SUMM. CLOSE GTFTRACE GTF NAMETOKN SYSTRACE,COPYDDIR INTEGER NOTE N TCBEXIT TCBX. COPYDUMP IPCS HELP H OPEN VERBEXIT VERBX,COPYTRC LIST L PROFILE PROF WHERE W. CTRACE LISTDUMP LDMP RENUM REN,IPCS subcommands can also be entered from. any IPCS Command line with prefix of IP,SHARE Session August 2010 2010 IBM Corporation.
IPCS subcommands can be entered from IPCS Option 6 IPCS Subcommand Entry or they can be. issued on any command line with the prefix of IP short form of IPCS Details about these IPCS. subcommands can be found in the z OS MVS IPCS Commands manual. Stacking IPCS Subcommands,issue subcommand on command line prefixed by IP. IPCS OUTPUT STREAM Line 31 Cols 1 78,Command IP LIST 8FDB90 SCROLL CSR. Time of Error Information, PSW 070C0000 87A19A94 Instruction length 04 Interrupt code 0004. Failing instruction text B0509620 F01945E0 C6AC947F. Registers 0 7, GR 00000004 00005FD0 008FDB90 008E6E90 87A19A8C 87A327F8 87A19580 008E6E90. AR 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000. Registers 8 15, GR 00000000 008FDB90 00000000 008E6E90 87A19580 008E6E90 87A19A8C 00000000.
AR 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000. IPCS OUTPUT STREAM Line,Command SCROLL PF3,TOP OF DATA. LIST 008FDB90 ASID X 0279 LENGTH 4 AREA,008FDB90 00001B20. END OF DATA,SHARE Session August 2010 2010 IBM Corporation. To be able to stack IPCS subcommands SYS1 SBLSTBL0 must be concatenated to ISPTLIB and. ISPF keyword NEWAPPL BLSG must be used when invoking IPCS initially. In this example the IPCS LIST subcommand is issued while viewing the output of a command The. output of the LIST command will be displayed next Hitting PF3 will return IPCS to the previous. output screen,Specifying the data descr in IPCS,Subcommands. There are 3 basic attributes of a data descriptor,data descr.
z Virtual Address in Hex required, address that begins with an alphabet must end with a period. z Length optional default is 4 bytes, z ASID optional default depends on type of dump and what is. z For example,IP LIST 123458 ASID X 20 LEN 100,IP WHERE FE1268. SHARE Session August 2010 2010 IBM Corporation, If you look into the IPCS Commands manual you will see that some of the IPCS subcommands. accept data descr as a parameter Basically this is the virtual address that needed to be supplied to. the command There are many attributes of the data descr The most common ones are the virtual. address length and ASID, If you don t specify the length the default is 4 bytes If you don t specify ASID IPCS will use the.
one in its default table To see the default values issue the IPCS subcommand SETDEF or IP. SETD and look at the bottom section for Local Defaults The default ASID is in the last line. You can change the default ASID by using the SETDEF subcommand For example IP SETD. Using a IPCS Primary command,Issue Primary command on command line. IPCS OUTPUT STREAM Line 31 Cols 1 78,Command FIND 8FDB90 SCROLL CSR. Time of Error Information, PSW 070C0000 87A19A94 Instruction length 04 Interrupt code 0004. Failing instruction text B0509620 F01945E0 C6AC947F. Registers 0 7, GR 00000004 00005FD0 008FDB90 008E6E90 87A19A8C 87A327F8 87A19580 008E6E90. AR 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000. Registers 8 15, GR 00000000 008FDB90 00000000 008E6E90 87A19580 008E6E90 87A19A8C 00000000.
AR 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000. SHARE Session August 2010 2010 IBM Corporation, FIND is a great example of an IPCS Primary command Note that no IP prefix is required when a. primary command is issued,1 What type of dump is it. The following unformatted dumps require IPCS for viewing. z Recovery initiated dump,z Console dump,z SLIP dump. Standalone dump, Knowing the type of dump will give you an idea of why the dump. was taken and how you should start your investigation. SHARE Session August 2010 2010 IBM Corporation, The most common type of dump is the SVC Dump SYSMDUMP is very much like an SVC Dump.
but with less contents Standalone dumps represents a system outage and is more complicated to. work with If you hear of a Transaction Dump it is similar in contents to a SYSMDUMP. We will focus more on SVC dumps in this session, A recovery initiated dump is taken due to an error So one would need to find out what is the error. and why it occurred, Console dumps are taken via the DUMP command on the operator s console It is usually due to a. problem with a job or address space One would need to analyze the units of work in the address. space This will require reviewing the TCBs and RBs in the address space We will touch on this. near the end of the session, SLIP dumps are taken for a purpose One would need to find out the SLIP trap that caused the dump. to be taken then get the PSW registers information and investigate accordingly. IP ST SYSTEM,Can be used to verify type of dump,Program producing dump can be. z SVCDUMP SLIPDUMP SYSMDUMP SADUMP,SYSTEM STATUS,Nucleus member name IEANUC01.
I O configuration data,IODF data set name MVSR IODF00. IODF configuration ID CG21,Sysplex name TEST, TIME OF DAY CLOCK C1CF7E24 10F88549 01 17 2008 09 24 58 942344 local. TIME OF DAY CLOCK C1CF70BA D6B88549 01 17 2008 08 24 58 942344 GMT. Program Producing Dump SVCDUMP,Program Requesting Dump IEAVTSDT. Incident token TEST P1N4 01 17 2008 08 24 43 288934 GMT. SHARE Session August 2010 2010 IBM Corporation, The time of the dump is the time that global data capture completed This is an example of an SVC. Note that SVCDUMP in the ST SYSTEM output can mean a recovery initiated SVC dump or a. Console dump To distinguish these types of dumps you need to look at the dump title see next. IP LIST TITLE L TITLE,Use this command to determine the type of SVC.
z Recovery initiated dumps typically have a COMPID and other. system related information, z Console dumps have a title of whatever the user puts in COMM as. the dump title, z Dumps taken as a result of a SLIP trap have SLIP DUMP ID xxx in. SHARE Session August 2010 2010 IBM Corporation, The dump title can provide a clue as to why the dump was taken See the examples on next page. Examples of SVC Dump Title,Recovery initiated dump. LIST 00 LITERAL LENGTH X 58 CHARACTER, 00000000 COMPON BPX COMPID SCPX1 ISSUER BPXMIPCE MODULE BPXPRSRB ABE.
00000040 ND S00C6 REASON 00000006,Console dump,LIST 00 LITERAL LENGTH X 19 CHARACTER. 00000000 JOB PAYROLL IS HUNG,LIST 00 LITERAL LENGTH X 17 CHARACTER. 00000000 SLIP DUMP ID 0001,SHARE Session August 2010 2010 IBM Corporation. Recovery initiated dumps have dump titles that are pre coded in the recovery routines They usually. contain technical information about the component or product that experienced the error. Console dump titles are supplied by the user via the DUMP command on the console They are. usually less technical and more human like, SLIP dump titles are system generated and contain the words SLIP DUMP ID in it. IP LIST SLIPTRAP L SLIPTRAP, If the SVC dump is a SLIP dump use this command to.
find out the SLIP trap that matched and caused this. dump to be taken,LIST 00 LITERAL LENGTH X 22 CHARACTER. 00000000 SLIP SET C 9C6 ID WK5 A SVCD ML 1,SHARE Session August 2010 2010 IBM Corporation. In this example the dump was taken as a result of a SLIP on an abend9C6 The ID of the SLIP is. IPCS subcommands can be entered from IPCS Option 6 IPCS Subcommand Entry or they can be issued on any command line with the prefix of IP short form of IPCS Details about these IPCS subcommands can be found in the z OS MVS IPCS Commands manual

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