IMS Connect and IMS ODBM: an early look Jim Martin Fundi Software 5-Aug-2010 Session 7858
IMS Connect and IMS ODBM: an early look Jim Martin Fundi Software 5-Aug-2010 Session 7858.
Dec 25, 2015
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IMS Connect and IMS ODBM: an early lookJim MartinFundi Software
5-Aug-2010Session 7858
2
Agenda
• Overview of open database• Systems-perspective of Open Database• Tools that can be used with Open Database• Futures
3
Open Database Environment
LPAR A
LPAR B
LPAR C
z/OS
Distributed
J
C
A
1.5
T
C
P
I
P
WebSphere
IMS DBCTL
IMS
PC
IMS Connect
S
C
I
TCPIP
S
O
A
P
TCP/IP
XCFIMS DB
CTL
IMS
PCS
C
I
ODBA
IMS DBCTL
IMS
PCS
C
I
ODBA
S
C
I
ODBA
ODBM
DLITCP/IP
JDBCTCP/IP
Roll Your Own
4
Protocol difference
• IMS Connect has always used the IRM protocol• Now supports DRDA – an open standards based protocol
for distributed database access•Defines request flows•Defines Object:Data structure (DDM)• Extensible•Controlled by the Open Group
Standards-based tools can analyze the communcation
exchange
10
Key points
• Differentiator• Standards-based•Open access from distributed platforms• Two-phase commit•With or without WAS
• Impact•Open DB requires CSL + IMS Connect•New class of workload through IMS and IMS Connect
11
Challenges
• Managing and configuring new address spaces• Understanding, debugging, and tuning DRDA requests• New class of IMS application programmers (hopefully!)
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IMS Connect Extensions
• Improves the manageability of IMS Connect• IMS Connect Extensions enhancements for Open
Database include:• Event collection•Routing•Monitoring of ODBM throughput in GUI or ISPF
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Use routing to improve parallelism and redundancy
MessagesALIAS+
PSBNAME
ODBM AALIAS ALIASALIASALIAS
CEX converts a single ALIAS+PSBNAME to multiple candidate
ODBM address spaces and databases
IMS Connect
ODBM B
1000msg/s 4x250msg/s
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IMS Connect
Open database access
ODBM IMS
Journals
Extensions
IMS Log
Overall request characteristics
Framing for ODBM performance
Input and output for ODBM
Tracks DRDAflow
Reports separateresponse timesfor IMS Connectand IMS
WebSphereApplicationServer (WAS)
IMSConnect
IMSConnectExtensions
IMSPerformanceAnalyzer
IMSProblemInvestigator
ODBM IMS
WASsupport staff
The problem is somewhere in here:a reporting "black hole" betweenthe two product support teams IMS
support staff
Response times over 2 seconds!
"WebSphere Application Server waits 2 secondsfor a response from IMS. Contact IMS support."
"IMS respondsin a millisecond."
Event journal
IMS log
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IMS Problem Investigator
• The first interactive log analysis tool for IMS• Used in dozens of Global 2000 enterprises in over 15
countries• Actively developed product: significant enhancements
being released continuously• Full detailed support for CEX ODBM event records
• Includes Code Points and DDM Objects
18
IMS PI and Open Database
• Open database requests are captured in the CEX journal• IMS PI can format the requests • Interprets standard DDM objects• Interprets IMS-specific extensions• Allows you to connect DRDA requests to data IMS log and
monitor data, OMEGAMON ATF…
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File Menu Edit Mode Navigate Filter Time Labels Options Help —————————————————————————————————————————————————————————————————————————————— IMSPI CEX000.QADATA.REDBOOK.DRDAT111.ICON.D1003 Record 00000001 More: < > Command ===> Scroll ===> CSR Forwards / Backwards . . 00.00.00.000100 Time of Day . . 16.46.22.845746 Code Description Date 2010-03-31 Wednesday Time (LOCAL) / ---- ------------------------------------------------------ ---------------- A000 IMS Connect Extensions Control Information 13.26.14.140845 A05B DRDA 1041 EXCSAT-Exchange Server Attributes 13.46.43.550577 A05B DRDA 106D ACCSEC-Access Security 13.46.43.550630 A05C DRDA 1443 EXCSATRD-Server Attributes Reply Data 13.46.43.550655 A04A WRITE Socket 13.46.43.550715 A05B DRDA 106E SECCHK-Security Check 13.46.44.165876 A063 ODBM Security Exit called 13.46.44.166018 A064 ODBM Security Exit returned 13.46.44.166131 A05C DRDA 1219 SECCHKRM-Security Check Reply Message 13.46.44.166155 A04A WRITE Socket 13.46.44.166264 A05B DRDA 2001 ACCRDB-Access RDB 13.46.44.794057 A05D ODBM begin Allocate PSB (APSB) Program=AUTPSB11 13.46.44.794080 A061 ODBM Routing Exit called 13.46.44.794090 A062 ODBM Routing Exit returned 13.46.44.794258 A069 Message sent to ODBM 13.46.44.794711 A06A Message received from ODBM 13.46.45.067997 A05E ODBM end Allocate PSB (DPSB) Program=AUTPSB11 13.46.45.068131
Initiation
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File Menu Edit Mode Navigate Filter Time Labels Options Help —————————————————————————————————————————————————————————————————————————————— IMSPI CEX000.QADATA.REDBOOK.DRDAT111.ICON.D1003 Record 00000057 More: < > Command ===> Scroll ===> CSR Forwards / Backwards . . 00.00.00.000100 Time of Day . . 16.46.22.845746 Code Description Date 2010-03-31 Wednesday Time (LOCAL) / ---- ------------------------------------------------------ ---------------- A048 Trigger Event for ODBMMSG 13.46.47.193554 A05B DRDA 200C OPNQRY-Open Query 13.46.48.120747 A05B DRDA CC05 DLIFUNC-DL/I function 13.46.48.120837 A05B DRDA CC01 INAIB-AIB data 13.46.48.120890 A05B DRDA CC04 RTRVFLD-Field client wants to retrieve data 13.46.48.120943 A05B DRDA CC04 RTRVFLD-Field client wants to retrieve data 13.46.48.121013 A05B DRDA CC06 SSALIST-List of segment search argument 13.46.48.121066 A069 Message sent to ODBM 13.46.48.121224 A06A Message received from ODBM 13.46.48.124238 A05C DRDA 2205 OPNQRYRM-Open Query Complete 13.46.48.124345 A04A WRITE Socket 13.46.48.124514 A048 Trigger Event for ODBMMSG 13.46.48.124552 A05B DRDA 200C OPNQRY-Open Query 13.46.49.009514 A05B DRDA CC05 DLIFUNC-DL/I function 13.46.49.009586 A05B DRDA CC01 INAIB-AIB data 13.46.49.009637 A05B DRDA CC04 RTRVFLD-Field client wants to retrieve data 13.46.49.010758 A05B DRDA CC04 RTRVFLD-Field client wants to retrieve data 13.46.49.010828
Open database query
21
File Menu Edit Mode Navigate Filter Time Labels Options Help —————————————————————————————————————————————————————————————————————————————— IMSPI CEX000.QADATA.REDBOOK.DRDAT111.ICON.D1003 Record 00000001 More: < > Command ===> Scroll ===> CSR Forwards / Backwards . . 00.00.00.000100 Time of Day . . 16.46.22.845746 Code Description Date 2010-03-31 Wednesday Time (Elapsed) / ---- ------------------------------------------------------ ---------------- A000 IMS Connect Extensions Control Information 13.26.14.140845 A05B DRDA 1041 EXCSAT-Exchange Server Attributes 20.29.409732 A05B DRDA 106D ACCSEC-Access Security 0.000052 A05C DRDA 1443 EXCSATRD-Server Attributes Reply Data 0.000024 A04A WRITE Socket 0.000060 A05B DRDA 106E SECCHK-Security Check 0.615160 A063 ODBM Security Exit called 0.000142 A064 ODBM Security Exit returned 0.000113 A05C DRDA 1219 SECCHKRM-Security Check Reply Message 0.000023 A04A WRITE Socket 0.000109 A05B DRDA 2001 ACCRDB-Access RDB 0.627793 A05D ODBM begin Allocate PSB (APSB) Program=AUTPSB11 0.000022 A061 ODBM Routing Exit called 0.000010 A062 ODBM Routing Exit returned 0.000168 A069 Message sent to ODBM 0.000452 A06A Message received from ODBM 0.273286 A05E ODBM end Allocate PSB (DPSB) Program=AUTPSB11 0.000133
Elapsed times
22
File Menu Format Help ——————————————————————————————————————————————————————————————————————————————— IMSPI CEX000.QADATA.REDBOOK.DRDAT111.ICON.D Record 00000021 Line 00000019 Command ===> Scroll ===> CSR Form ===> + Use Form in Filter Format ===> FORM +001D Type....... 01 RQSCRR..... 0001 +0020 Object..... 2001 ACCRDB-Access RDB +0020 Length..... +60 CP......... 2001 +0024 Object..... 2110 RDBNAM-Relational Database Name +0024 Length..... +17 CP......... 2110 +0028 Data....... 'AUTPSB11.ODB1' +0035 Object..... 210F RDBACCCL-RDB Access Manager Class +0035 Length..... +6 CP......... 210F Data....... 2407 +003B Object..... 112E PRDID-Product-specific Identifier +003B Length..... +20 CP......... 112E +003F Data....... 'IMS OPEN DB V1.0' +004F Object..... 002F TYPDEFNAM-Data Type Definition Name +004F Length..... +13 CP......... 002F +0053 Data....... 'QTDSQL370'
“Standard” DDM
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File Menu Format Help ——————————————————————————————————————————————————————————————————————————————— IMSPI CEX000.QADATA.REDBOOK.DRDAT111.ICON.D Record 00000035 Line 00000019 Command ===> Scroll ===> CSR Form ===> + Use Form in Filter Format ===> FORM +001D Type....... 01 RQSCRR..... 0001 +0020 Object..... 200C OPNQRY-Open Query +0020 Length..... +37 CP......... 200C +0024 Object..... 2141 MAXBLKEXT-Maximum Number of Extra Blocks +0024 Length..... +6 CP......... 2141 Data....... 0000 +002A Object..... C907 PCBNAME-PCB name +002A Length..... +11 CP......... C907 Data....... 'EMPLPCB' +0035 Object..... 2114 QRYBLKSZ-Query Block Size +0035 Length..... +8 CP......... 2114 Data....... 00008000 +003D Object..... 2156 QRYROWSET-Query Rowset Size +003D Length..... +8 CP......... 2156 Data....... 00000001 ********************************* End of data *********************************
Sequence in detail
24
File Menu Format Help ——————————————————————————————————————————————————————————————————————————————— IMSPI CEX000.QADATA.REDBOOK.DRDAT111.ICON.D Record 00000050 Line 00000019 Command ===> Scroll ===> CSR Form ===> + Use Form in Filter Format ===> FORM +001D Type....... 03 RQSCRR..... 0001 +0020 Object..... CC06 SSALIST-List of segment search argument +0020 Length..... +55 CP......... CC06 +0024 Object..... C905 SSACOUNT-Number of segment search arguments +0024 Length..... +6 CP......... C905 Data....... 0002 +002A Object..... C906 SSA-Segment search argument +002A Length..... +32 CP......... C906 +002E Data....... 'EMPL *D(EMPNO GE )' +004A Object..... C906 SSA-Segment search argument +004A Length..... +13 CP......... C906 +004E Data....... 'EMPLINFO ' ********************************* End of data *********************************
Details of input and output
25
Solving problems
• Session errors: these are conditions that generate distinct error. For example, specifying the wrong alias name, trying to access a stopped PSB.
• Performance problems: IMS provides an output but processing time is slow.
• Unexpected responses: the client receives information from IMS but it is not the feedback that the client was expecting.
26
File Menu View Help —————————————————————————————————————————————————————————————————————————————— IMSPI Filter Row 1 of 1 More: < > Command ===> Scroll ===> CSR Filter . . . . . + Description . . . New Log Record Filter Activate Tracking / Log Code + Exc Description CON A047 Session Error Level 1 Conditions No Form + REXX ------------------------------------------------------------------------------ ******************************* Bottom of data ********************************
Filtering
File Menu Edit Mode Navigate Filter Time Labels Options Help —————————————————————————————————————————————————————————————————————————————— IMSPI CEX000.QADATA.REDBOOK.ERR01.ICON.D100331 Record 00000027 More: < > Command ===> Scroll ===> CSR Forwards / Backwards . . 00.00.00.000100 Time of Day . . 16.46.22.845746 Code Description Date 2010-03-31 Wednesday Time (LOCAL) / ---- ------------------------------------------------------ ---------------- A047 Session Error 11.54.55.710442 A047 Session Error 12.03.02.490039 A047 Session Error 12.32.09.670281 ******************************** Bottom of Data *******************************
27
File Menu Format Help ——————————————————————————————————————————————————————————————————————————————— IMSPI CEX000.QADATA.REDBOOK.ERR01.ICON.D100 Record 00000027 Line 00000016 Command ===> Scroll ===> CSR Form ===> + Use Form in Filter Format ===> FORM +001A CERE_47_VAR_MSG.... 134 byte message area +0000 C8E6E2D2 F2F8F7F5 E640D5D6 40D6C4C2 *HWSK2875W NO ODB* +0010 D440C9E2 40C1E5C1 C9D3C1C2 D3C540C6 *M IS AVAILABLE F* +0020 D6D940D4 C5E2E2C1 C7C540D9 D6E4E3C9 *OR MESSAGE ROUTI* +0030 D5C75E40 C37ED6C4 C2F3C3F0 F4F16B40 *NG; C=ODB3C041, * +0040 C9D4E2C1 7ED3C1D3 C16B40D7 7EF4F8F8 *IMSA=LALA, P=488* +0050 F5F54040 406B40C9 D4E2C1F1 7E404040 *55 , IMSA1= * +0060 406B40D6 C4C2D47E 40404040 40404040 * , ODBM= * +0070 6B40D97E C9D4E2C1 D5C6D5C4 6B40D47E *, R=IMSANFND, M=* +0080 D4D9C3E5 0000 *MRCV.. * +00A0 CERE_47_VAR_SESRSN......... 'WRITE ' +00A8 CERE_47_VAR_TOKEN.......... 0000000000000000 ********************************* End of data *********************************
Details of error
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OMEGAMON ATF
• Application-level accounting• Identify DLI call times and CPU utilization• Use with IMS PI filtering and tracking to proactively identify
problems• Resolve problems by ‘tracking’ from ATF records to all
other available records (in the IMS log, DB2, etc…)
29
File Menu Edit Mode Navigate Filter Time Labels Options Help ────────────────────────────────────────────────────────────────────────────── BROWSE CEX000.QADATA.REDBOOK.DRDAT111.ICON.D1003 Record 00000308 More: < > Command ===> Scroll ===> CSR Forwards / Backwards . . 00.00.00.000100 Time of Day . . 16.46.22.845746 Code Description Date 2010-03-31 Wednesday Time (LOCAL) / ---- ------------------------------------------------------ ---------------- A049 READ Socket 13.46.47.095038 A05B DRDA CC06 SSALIST-List of segment search argument 13.46.47.095045 A0AA ODBM Trace: Message sent to ODBM 13.46.47.095985 A069 Message sent to ODBM 13.46.47.096016 06 OSAM IWAIT start TranCode=ODBA02CD Region=0003 13.46.47.142891 20 Database Open Database=EMPDB2 Region=0003 13.46.47.143647 06 OSAM IWAIT start TranCode=ODBA02CD Region=0003 13.46.47.181506 20 Database Open Database=AUTODB Region=0003 13.46.47.182252 06 OSAM IWAIT start TranCode=ODBA02CD Region=0003 13.46.47.191442 01 DLI GHU Database=EMPLDB2 SC=' ' Elapse=0.095875 13.46.47.096570 B021 DLI Database Trace Database=EMPLDB2 Func=GHU 13.46.47.192378 A0AA ODBM Trace: Message received from ODBM 13.46.47.192881 A06A Message received from ODBM 13.46.47.192909 A05C DRDA 2205 OPNQRYRM-Open Query Complete 13.46.47.193186 A04A WRITE Socket 13.46.47.193515 A048 Trigger Event for ODBMMSG 13.46.47.193554 A03C Prepare READ Socket 13.46.48.120636
Combining ATF with Open DB
30
Batch job:report/extractrequest
JC L
Specifiedinput files
G enerates& subm its
SLD S (or O LD S)
D isk or tape:
IM S Log records
IM S C onnect Extensionsjournal data sets
IM S C onnect records
IMS PAISPF dialog
IM S M onitor data sets
O M EG AM O NTR F Extractor data sets
IM S M onitor records
R eport/extractrequestwith input fileddnames
Extracts
TransactionIndex
R eports
IMS Performance Analyzer
• IMS PA providesperformance reports
• Proactive and reactive tool
• Help identify problems
• Meet SLAs• Plan and
optimize capacity
31
IMS Configuration Manager
• IMS Configuration Manager is a rebranding of IMS Parameter Manager
• Represents the introduction of significant new features and a refocus of the product
• Focus changes from managing IMS parameters to managing IMS resources
• Retains most parameter management functionality• Adds ability to edit, browse, and install IMS resources• Leverages DRD
32
Open database
• Now: helps you set up ODBM and IMS Connect address space
• Future requirement: provides a control web interface where you can manage your IMS environment
33
Future suggestions
• Improved reporting in IMS PA •ODBM End to End reporting
• More flexible forms of tracking in IMS PI• Better address-space management and GUI-based
administration (ICM)
34
Conclusions
• Open database is a significant enhancement to IMS• Simplifies application development for IMS• Creates challenges for system administration • IMS Tools are evolving to help address these challenges• Your thoughts?
35
Literature
• Upcoming IMS Open Database Redbook• IMS Application Programming API• Technical Standard: DRDA, Version 4, Volume 1 and V3
36
More information
• IBM DB2 and IMS Tools website:http://www.ibm.com/software/data/db2imstools/
•Jim Martin, US Representative, Fundi Software:
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