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					Adabas v7.4 Technical Update
Your cost efficient, high performance enterprise database




Becky Albin
Database Architect

April 2003



                                                            1
Agenda
 Roadmap/Release Schedule
 Supported Levels
 What’s relatively new in Adabas
     64-bit Exploitation (v7.1.3)
     IBM Parallel Sysplex Exploitation (v7.2.2)
 Adabas v7.4 Conversion
 Adabas v7.4 New Features and Enhancements
 Adabas Parallel Services v7.4
     Installation
     How it works
 Adabas Cluster Services v7.4
       Installation
       How it works

                                                   2
Released in 2002              Arriving in 2003                       Later…
Cluster Services 7.2.2       Adabas 7.4.2 (2nd qtr 2003)    Adabas 8 (2004)
                              Adabas add-on products
Adabas Add-ons 7.3            VSE,VM,OS/390 releases          The next major version
                                                               Close SQL integration
Adabas 3.2                   Parallel Services 7.4             Large Object support
                                                               Spanned records
                              Multiple update servers in      …
Adabas VSAM Bridge 5.1         a SMP environment

Adabas 7.4.1 (OS/390,z/OS)   Adabas 3.3 (Open Systems)      Adabas SQL Server         (2004)
                              SQL support
Adabas SQL Server 5                                          Referential integrity
 Controlled release         Adabas Manager                  Sub-transactions
                                                             New user interface
                             Cluster Services 7.4.2




                                                                                               3
Adabas versions
  Adabas supported versions:
       Adabas v6.2.3    Released 6/1999
                         Dropped support 6/2001
       Adabas v7.1.2    Released 6/2000
                         Dropped support 10/2002
       Adabas v7.1.3    Released 9/2001
                         Drops support 5/2004
       Adabas v7.2.2    Released 1/2002 – IBM Parallel Sysplex
       Add-ons v7.3.1   Released 12/2001 - for v71/v72
       Adabas v7.4.1    Released 12/2002 (OS/390, z/OS)
  Current/Upcoming releases:
       Adabas v7.4.2    1st half 2003 (VSE,VM, OS/390, z/OS)
       Adabas v8.1.1    2nd half 2004

                                                                  4
The Context

  Current
  Version

            Adabas 7.1



              Add-ons 7.3
                            Adabas 7.4   Adabas 8

For Sysplex
 users only
            Adabas 7.2

                                                    5
                                                    7
New since Adabas v71

 v7.1.3
      64-bit Real Storage Exploitation
         OS/390 v2r10 ARCHLEVEL=2 or z/OS 1.2 and above
         Max. 128 GB Real Storage
         2 GB size limitation for allocation
      64-bit Virtual Storage Exploitation
           z/OS 1.2 and above
           2 GB size limitation removed
           data caches only
           other structures in later versions of z/OS




                                                           6
Adabas 64-bit Virtual Storage Support for
      High Performance Caching
                                        Main Memory
                                                         64-bit
 Adabas was first !                   Adabas
    Adabas was the first database      Cache
    to exploit IBM’s 64-bit Virtual     gt 2 GB     Virtual
    Storage architecture for                        Storage
    mainframes                         Adabas
                                      Buffer Pool
                                       max 2GB
   Availability in parallel with
    IBM’s introduction of the                            32-bit
                                       Adabas
    architecture                       Cache
                                       max. 2GB      Adaba
                                                       s
   High Performance!!!
                                       Adabas        Server
                                      Buffer Pool
                                       max. 2GB

                                                                  7
Adabas Cluster Services – v7.2.2
 Adabas specifically designed for IBM’s Parallel Sysplex
       OS/390 or z/OS only
 Multiple Adabas nuclei updating/reading the same physical
  database
 Optimized performance features
 Automated peer level recovery
 Robustness
 Extensibility
 24 x 7 availability
 Production sites
 Test sites in the U.S.

More on this later…

                                                              8
Adabas v7.4 Features and Enhancements




                                        9
Adabas v7.4

 Released – available for OS/390 and z/OS
 Re-merging of Adabas v7.1 and v7.2 code
 New SQL solution for desktop access to Adabas
 Adabas Parallel Services
      Cluster support of an Adabas DB on a single machine
      Multiple update nuclei

 Adabas Cluster Services
      Support for IBM Parallel Sysplex environment
      Coupling Facility used for 24 x 7 support

 Other new enhancements

                                                             10
Adabas v7.4.1
  Supported Operating Systems
      OS/390 version 2, releases 6-10
      z/OS version 1, releases 1-4
      http://www.softwareag.com/corporat/prodstat/ibm/default.htm
      VSE and VM will be supported with Adabas v7.4.2




                                                                     11
Adabas v7.4.1
  SAG Product Level Compatibility
       Adabas v7.4 is downward compatible with Adabas v7.1
       Natural v3.1 or above
       Entire Net-Work v5.8.1 or above
         WM58028
         Entire Net-Work X-Hub v1.2.1 or above
       Adabas SQL Server v5.1
       Entire Adabas SQL (ESQ) v1.4 or above




                                                              12
Adabas v74 Conversion
 Conversion: Adabas v7.1 to v7.4
      ADASAV - database backup
      ADAEND v7.1 database
      ADARES PLCOPY - copy PLOG datasets
      ADACNV CONVERT TOVERS=74
        Input PLOG datasets to ADACNV
      ADASAV - database backup
      ADANUC - start v7.4 nucleus




                                            13
Adabas v74 Conversion
 What happens during conversion to v7.4:
      GCB
         XGCBSTAT=x’C8’
         XPPTA     First PPT RABN
         XPPTE     Last PPT RABN
      PPT (Parallel Participant Table) blocks allocated
         32 contiguous ASSO blocks (ADACNV or ADADEF)
         Taken from FST and ‘cleared’
         Used by Adabas Parallel Services or Adabas Cluster Services
         One block per participating ASM/ALS nucleus
         Keeps track of WORK, PLOG and CLOG datasets
      Set DSF DLOG to v74 (if using Adabas Delta Save Facility)

                                                                        14
Adabas v74 Conversion
 What happens during conversion to v7.4: (cont.)
      FCB
         New field in FCB added and ‘reset’
         YFSTAT1 = x’80’ (YFSTQALO) set by AQA via CREATE
          TABLE and therefore can be deleted by AQA
      If needed, clears BUB (ASSO RABN 2) and MIRTAB (ASSO RABN 7)
      Possible to convert back to v7.1 with ADACNV REVERT
         Release PPT
         Reset XGCBSTAT=‘xC7’
         Reset DLOG/DSF to v71




                                                                      15
Adabas V7.4 – Desktop Access to Adabas

                               Desktop                         3GL
                Java                                                               Natural
                                Tools                          4GL*
                                                                    *not Natural




            Jadabas    JDBC   ODBC

                                                                                      Client
Net-Work optional      Adabas SQL         TCP/IP                   TCP/IP             Net-Work optional
                         Server

                        SQL Engine

                              Net-Work optional if different platforms




                        Adabas
                                                                                    Server
                                                                                                          16
Adabas v7.4.1
 Hot standby
      via IBM’s Automated Restart Manager (ARM)
        OS/390 and z/OS
        Automatically restarts failed servers
        ADARUN PROGRAM=ADANUC….ARMNAME=‘arm policy’
        Policy defined by Systems programmer, controls when, where and
         how often to attempt automatic restart
        Adabas does not invoke ARM on intentional abend, like parameter
         error




                                                                           17
Adabas v7.4.1
 DASD volume backup product(s) support
      Support the Snapshot / Flashcopy / TimeFinder/TDMF, … feature while
       nucleus is active
      Does NOT replace ADASAV!!!

      ADADBS TRANSACTIONS SUSPEND (TTSYN)
         ET-sync point, SYNC-73 checkpoint
         Suspends ‘Update’ commands
         Allows/processes ‘Read’ commands

         and then…. Run volume backup process of your choice


      ADADBS TRANSACTIONS RESUME
         SYNC-74 checkpoint
         Resumes ‘Update’ processing
      Also available through AOS
                                                                             18
How it works

                                            Pre-defined
                                           time window



                          Suspend                          Resume


                                            Read
              Read / update                 only                      Read / update


                                                 snap



        Source                                                              Physical
                                        Snapshot
         Data                                                               Backup


Read only: update requests are queued in this phase – execution after Resume
Suspend: all open transactions are finished and data are transferred to the disk       19
Adabas v7.4.1
 Multifetch/Prefetch
      INCLUDE parameters
        PREFICMD and PREFIFIL
        Used in ‘PAIRS’ like EXCLUDE (PREFXCMD/PREFXFIL)
        ADARUN PREFIFIL=8,PREFICMD=L3
         ADARUN PREFIFIL=12,PREFICMD=L3
         ADARUN PREFIFIL=12,PREFICMD=L9
         or
         ADARUN PREFIFIL=8,12,12,PREFICMD=L3/L3/L9
        If both INCLUDE and EXCLUDE parameters used, EXCLUDE
         is used




                                                                20
Adabas v7.4.1
 Enhanced Backup and Restore Performance
      Exploits IBM’s large block (>32,760 bytes) support for
       sequential access methods BDAM and QSAM
         OS/390 v2 r10 and above
      ADAIOR supports tape drives with a blocksizes of up to:
         256k for 3590 devices
         64k for 3490/3490E devices
      Provides performance benefits for any Adabas utility writing
       to tape, such as ADASAV
      If shipping tapes to off-site facilities, the off-site center must
       support these ‘large blocks’



                                                                            21
Adabas v7.4.1
 PLOG Changes:
      8 byte timestamps
      NUCID
      Up to 8 PLOGs/CLOGs
         ADARUN NPLOG=n,PLOGDEV=n,PLOGSIZE=n
         ADARUN NCLOG=n,CLOGDEV=n,CLOGSIZE=n
         UEX12=name
        Or   ‘regular’ dual logging
         ADARUN DUALPLD=3390,DUALPLS=n
         ADARUN DUALCLD=3390,DUALCLS=n
         UEX2=name
      ADARUN PLOGRQ=yes/no/sel/FORCE
         Requires UEX2 or UEX12 and PLOG datasets
         Also detects different PLOG datasets and the old PLOG datasets have
          not been copied
                                                                                22
Adabas v7.4.1
 PLOG Changes: (cont.)
      If all PLOGs are full, Adabas will suspend ‘update’
       commands, but continue processing ‘access’ commands
      PLOG/CLOG datasets written and copied in numerical
       sequence
      ADASAV RESTORE/RESTONL no longer resets the
       PLOG/CLOG dataset headers




                                                             23
Adabas v7.4.1
 PLOG/CLOG Changes:
     ADARES PLCOPY/CLCOPY
       ‘regular’ nucleus: specify log datasets in JCL
       ‘cluster’ nucleus: log datasets are taken from PPT
       Adabas Parallel Services
       Adabas Cluster Services




                                                             24
Adabas v7.4.1
 CLOG Changes:
     CLOG write I/Os are now asynchronous
        Allocates two ‘internal’ buffers during Adabas startup
        Each buffer capable of holding one cylinder of CLOG data
        Multi-block or cylinder writes are issued
     Up to 8 CLOGs (see previous slide)




                                                                    25
Adabas v7.4.1
 Buffer Flush Enhancement:
      ASYTVS=yes/no
      FMXIO=1/>1) (can be changed via operator command/AOS)
         In Adabas v7.1 when specifying ASYTVS=YES, the
          FMXIO setting was ignored. Causing one I/O to each
          volume in parallel.
         In Adabas v7.2 for better performance, ASYTVS=YES
          and FMXIO=>1, multiple I/Os can be issued to each
          volume in parallel
         FMXIO=1-16 if ASYTVS=yes
         FMXIO=1-100/60 if ASYTVS=no



                                                               26
Adabas v7.4.1
 Other Enhancements:
      Performance/Tuning note: because of changes in PLOG
       processing and ‘volume backup’ it may be necessary to
       increase setting for ADARUN NC=




                                                               27
Adabas v7.4.1
 Other Enhancements:             (cont.)
      LP=2,000,000,000
        WORK dataset can now have 4 byte RABNs
      LWP= minimum value is lesser of (NT * 25000) or 80,000
      ADARUN NUCID=n
        ‘regular’ Adabas nucleus = 0
        ‘clustered’ Adabas nucleus = >0 (more later)




                                                                28
Adabas v7.4.1
 Other Enhancements:        (cont.)
      Mixed Case messages
        ADARUN MSGCONSL=upper/mixed
        ADARUN MSGDRUCK=upper/mixed
        ADARUN MSGPRINT=upper/mixed




                                       29
Adabas v7.4.1
 Other Enhancements:              (cont.)
      CSAs of Replaced SVCs Released
        ADASIP releases SVC code and ID Table
        CSAs released are identified in ADAS20 message
        Helps to reduce number/frequency of IPLs
        Keeps first 8 bytes – ‘eye catcher’
        See Release Notes and Installation manual
      Link routine changes
        See Release Notes




                                                          30
Adabas v7.4.1
 Other Enhancements:          (cont.)
      AOS changes
      New console/operator messages during nucleus autorestart
      New generic message for internal error in nucleus w/abend




                                                                   31
Adabas v7.4.1
 Other Changes:
      BUB (Alternate RABNs) no longer supported
      ADAREF no longer supported
      ADASMP replaced by Adabas Parallel Services (ASM)
      ADAESI replaced by ADASAF




                                                           32
Adabas Parallel Services v7.4
     replacement of ADASMP




                                33
What is Adabas Parallel Services?
 A mechanism which allows
  for executing an Adabas
                                  Operating system
  update nucleus on each
  processor of a multi-engine
  CPU under a single image.      Nuc            Nuc
                                Update          Update
                                  Global Buffer Pool
 All nuclei share memory via
  a Global Buffer Pool and
  access the same physical
                                 Nuc            Nuc
  database/files.               Update          Update
                                 Shared Database Disks

 Replacement for ADASMP        ASSO     DATA       DATA



                                                           34
           Adabas Parallel Services
            Today and Tomorrow
Adabas 7.1 and below      Adabas 7.4 and above

 Operating system          Operating system

Nuc              Nuc      Nuc              Nuc
 Read            Read     Update          Update
  Global Buffer Pool        Global Buffer Pool

Nuc              Nuc      Nuc              Nuc
 Read           Update    Update          Update

    Database Disks            Database Disks




                                                   35
Adabas Parallel Services Architecture
     Lock                                                  ADACSH
  Structures
                       Updated Block Buffer              ASSO, DATA
  User Locks                                            And Work blocks
  File Locks
   UQ Desc
   ISN Hold
    Queue


      Update Nucleus                        Update
                                            Nucleus   Update nucleus

 WORK
                                                                       WORK
  PLOG                                                     Work
                                                                       PLOG
                                DATA

                       PPT in Asso
                                     ASSO
                                                                              36
Adabas Parallel Services Implementation
 APF authorized libraries
 ADASVC/SVCCLU
 Allocate/Format additional WORKs/PLOGs/CLOGs
       For each participating nucleus
          1 WORK
          2-8 PLOGs
          2-8 CLOGs
 Ensure all datasets are allocated on SHARED dasd
 ADACOM
     Controls ASM environment and user information
     Must be started first, before any nucs
     Allocates ‘Global’ areas
          Via 1st nucleus started ADARUN parameters



                                                       37
Adabas Parallel Services Implementation
  //ADACOM    JOB
  //*
  //*   ADACOM : ADABAS PARALLEL SERVICES
  //*
  //COM     EXEC PGM=ADARUN,TIME=1440
  //STEPLIB DD DISP=SHR,DSN=ADABAS.VVRS.LOAD   <=== ADABAS LOAD
  //*
  //DDDRUCK DD SYSOUT=X
  //DDPRINT DD SYSOUT=X
  //COMPRINT DD SYSOUT=X
  //SYSUDUMP DD SYSOUT=X
  //DDCARD    DD *
  ADARUN PROG=ADACOM
  //*
  //DDKARTE DD *
  ADACOM SVC=xxx,DBID=yyyyy,NU=zzzzz
  //

                                                                  38
Adabas Parallel Services Implementation
 Start-up JCL for each cluster nucleus
      How many nuclei?
 New ADARUN parameters:
      CLUSTER=no/sysplex/local
      NUCID=0-65000
      CLOGMRG=no/yes
      CLUGROUPNAME
      CLUCACHESIZE
        LFIOP * # nucs + directory elements
      CLULOCKSIZE
        Each element is 128 bytes
        RND2 (RND2 (MAXFILES) * 4 + ((LDEUQP/16) * 2) + RND2
         (NH*2) + RND2 (NU*2)*2)*4 + (MAXFILES*4 + LDEUQP/16 +
         NH + NU * 2) * 128
                                                                 39
Adabas Parallel Services Implementation

 User Exit 2/12
       ADARES PLCOPY/CLCOPY and MERGE
         Two intermediate datasets (input/output)
         USEREX2P or USEREX12P (sample jcl)




                                                     40
Adabas Parallel Services Implementation


 Adabas add-on product compatibility
      Adabas Online System
      Adabas Caching Facility
      Adabas Delta Save Facility
      Adabas FastPath
      Adabas Vista
      Adabas SAF Security



                                          41
Adabas Parallel Services - Recovery

 Online Recovery
      ADACOM detects a failed nucleus
      Surviving nuclei quiesce
         finish all commands in threads and command queue
         reinitialize working storage
         compete for recovery lock and perform pending autorestart
         open transactions backed out
         sequential/search processes and results maintained
         Global cache area discarded
         response codes 9 and 148



                                                                      42
Adabas Parallel Services - Recovery
 Crash Recovery
      Restore the database
      Use merged Protection Logs (ADARES)
 Backup process
      ADASAV ONLINE
      Merged PLOGs
 ADARES REGENERATE and BACKOUT
      After PLOG merge process, block numbers will not necessarily
       be the same
      To uniquely identify checkpoints, NUCID is added, and
      Records old block number prior to merge
      In ADARES specify the NUCID and block number as reported
       in ADAREP                                                      43
Adabas Parallel Services Advantages
 V7.4 ASM SVC can run a v7.1 SMP environment
       Link v71 SMPSVC with the v74 ADASVC
       As well as non-ASM databases (both v74 and v71)
 Users distributed and balanced across multiple processors
 Increased throughput
 Better response times for all users
 No need to buy a new machine to improve performance
 Maximum scalability
 No changes to applications
 Close to 24 X 7 without having to implement IBM’s Parallel
  Sysplex
 No More Skip-A-Turn loops

                                                               44
Adabas in an IBM Parallel Sysplex Environment
        Adabas Cluster Services v7.4




                                                45
IBM’s Parallel Sysplex Technology

 Up to 32 OS/390 boxes coupled together - runs as one
  MVS image
      Coupling Facility (cache, & lock structures)
      Sysplex timer
      CICS, VTAM, WLM…etc, etc.
 Benefits:
      True 24 X 7 - Outage persistent (planned or unplanned)
      Data sharing across MVS images
      Great performance



                                                                46
Parallel Sysplex
                   Timer




       OS/390              Coupling
                            Facility


                                        OS/390




                               OS/390
                                                 47
Adabas Parallel Sysplex Support
 Platform
      OS/390 Parallel Sysplex Environment

 Adabas Versions
      Adabas v7.4
      Adabas Cluster Services v7.4
 Natural v3.1 or above
 Entire Net-Work v5.8.1 or above




                                             48
The Coupling Facility


                           Cache Structure
                                Data consistency
                                 and high speed
                                Organization of
           Cache                 shared data
          Structure
            Lock           Lock Structure
          Structure
                                Resource
                                 Serialization
      Coupling Facility
                                                 WLM


                                                       49
Adabas Cluster Services v7.4


 Adabas Cluster Services
      better performance
      more stability
      SPaTs
      Online INVERT supported
        Not Online REORDER
      System Managed Processes
        Auto-Rebuild
        Structured Duplexing




                                  50
Features
 All nuclei (up to 32 per cluster) perform updates
    No single point of failure
 Contention handled globally
    Contention handled via XES services
 Multiple nuclei permitted per system
    one or more nuclei may be run locally
      no command re-routing required




                                                      51
Features
 Asynchronous process to merge PLOG/CLOG
      Single dataset to do regenerate
         Time sequence - 8 byte timestamp
      Single dataset for application/database logging
 Automatic process restart
      Interface with ARM (Automatic Restart Manager)




                                                         52
Adabas Cluster Services Implementation
 APF authorized libraries
 ADASVC/SVCCLU
 Allocate/Format additional WORKs/PLOGs/CLOGs
      For each participating nucleus
         1 WORK
         2-8 PLOGs
         2-8 CLOGs
 ADACOM
    Controls ASM environment and user information
    Must be started first, before any nucs
    Allocates ‘Global’ areas
         Via 1st nucleus started ADARUN parameters




                                                      53
Adabas Cluster Services Implementation
  //ADACOM    JOB
  //*
  //*   ADACOM : ADABAS PARALLEL SERVICES
  //*
  //COM     EXEC PGM=ADARUN,TIME=1440
  //STEPLIB DD DISP=SHR,DSN=ADABAS.VVRS.LOAD   <=== ADABAS LOAD
  //*
  //DDDRUCK DD SYSOUT=X
  //DDPRINT DD SYSOUT=X
  //COMPRINT DD SYSOUT=X
  //SYSUDUMP DD SYSOUT=X
  //DDCARD    DD *
  ADARUN PROG=ADACOM
  //*
  //DDKARTE DD *
  ADACOM SVC=xxx,DBID=yyyyy,NU=zzzzz
  //

                                                                  54
Adabas Cluster Services Implementation
 Start-up JCL for each cluster nucleus
       How many nuclei?
 New ADARUN parameters:
       CLUSTER=no/sysplex/local
       NUCID=0-65000
       CLOGMRG=no/yes
       CLUGROUPNAME
       CLUCACHENMAE
         Size is specified in CF Policy
       CLULOCKNAME
         Size is specified in CF Policy
       LRDP=lfiop
         DIRRATIO
         ELEMENTRATIO
                                           55
Adabas Cluster Services Implementation

 User Exit 2/12
       ADARES PLCOPY/CLCOPY and MERGE
         Two intermediate datasets (input/output)
         USEREX2P or USEREX12P (sample jcl)




                                                     56
Multi Update Support

      OS/390                  OS/390
         SVC                  SVC
         XCF                  XCF

      Update                   Update
     Nucleus A                Nucleus B
                  Coupling
     ADALNC        Facility   ADALNC
      CICS A                   CICS B


      Users                   Users


                                          57
Adabas Cluster Services
                   Timer
 OS/390                                          OS/390

          Update                  Update


                     Coupling
                      Facility

            Work      CLOG              Work

      CLOG PLOG            PLOG   PLOG CLOG



    Read / Write           Asso   Read / Write
                    Data

                                                          58
The Update Nucleus

                                              OS/390
                          Read / Write           Local
                                               Buffer Pool
                                         V
          Buffer Pool                    e
         Updated Blocks
                                         c       Update
          User Locks                     t       Nucleus
                                         o
          File Locks
                                         r
        ISN Hold Queue
                                             Write          Read
       Coupling Facility
                                         PLOG        ASSO
                                                            DATA

                                                                   59
Cluster Example

      OS/390                           OS/390
    Plex SVC                         Plex SVC
Command                          Command
           Nucleus                          Nucleus
 Manager                          Manager

 Nucleus   Nucleus               ADARES

                     Coupling
                      Facility
    Plex SVC                         Plex SVC
Command                          Command
           Nucleus
 Manager                          Manager

      OS/390                           OS/390

                                                      60
Coupling Facility

                          All updated ASSO and
  Updated      Updated     DATA Blocks placed in CF
   DATA         ASSO
                          Castout by Buffer Flush
  Blocks       Blocks
                          Assignment of users
                           controlled by locks
           Record
           Locks          Contention of record
                           updates controlled by
                           locks.
    User         File     Exclusive access/update of
   Locks        Locks      files controlled by locks


   Coupling Facility
                                                        61
Log Merge Utility

           Command                          Command
 Nucleus                          Nucleus
            Manager                          Manager


                                         CLOG
                      Coupling    PLOG
                       Facility

       CLOG PLOG                  ADARES

      OS/390                             OS/390
                        ASSO
                                   Merged
                                    LOG
                                    DSNs               62
Adabas Cluster Services - Recovery

 Online Recovery
      XES detects failed Adabas nuc
      Surviving nuclei quiesce
         finish all commands in threads and command queue
         reinitialize working storage
         compete for recovery lock
         open transactions backed out
         sequential/search processes and results maintained
         coupling facility contents discarded
         response codes 9 and 148



                                                               63
Adabas Cluster Services - Recovery
 Crash Recovery
      Restore the database
      Use merged Protection Logs (ADARES)
 Backup process
      ADASAV ONLINE
      Merged PLOGs
 ADARES REGENERATE and BACKOUT
      After PLOG merge process, block numbers will not necessarily
       be the same
      To uniquely identify checkpoints, NUCID is added, and
      Records old block number prior to merge
      In ADARES specify the NUCID and block number as reported
       in ADAREP                                                      64
Adabas Cluster Services - Benefits
 Adabas add-on products:
      Adabas FastPath Adabas v7.4
      Dynamic Caching v7.4
      Adabas Online System v7.4
      Adabas SAF Security v7.4
      Adabas Delta Save Facility v7.4




                                         65
Adabas Cluster Services (ALS - Adabas v7.2.2)


                        Sysplex
       OS/390            Timer                 OS/390
       Update                                  Update
      Nucleus A                               Nucleus B
                       Coupling
                        Facility
        Read / Write                        Read / Write

                       ASSO DATA

                        Shared DASD


            PLOGs                           PLOGs
     WORK               PLOG                        WORK
                        merge
                                  Asynchronous merge
                                                           66
Each Update Nucleus (ALS)

                                              OS/390
                          Read / Write           Local
                                               Buffer Pool
                                         V
          Buffer Pool                    e
         Updated Blocks
                                         c       Update
          User Locks                     t       Nucleus
                                         o
          File Locks
                                         r
        ISN Hold Queue
                                             Write          Read/
       Coupling Facility                                    Write
                                         PLOG        ASSO
                                                            DATA

                                                                    67
Cluster Example (ALS)

      OS/390                           OS/390
    Plex SVC                         Plex SVC
Command                          Command
           Nucleus                          Nucleus
 Manager                          Manager

 Nucleus   Nucleus               ADARES

                     Coupling
                      Facility
    Plex SVC                         Plex SVC
Command                          Command
           Nucleus
 Manager                          Manager

      OS/390                           OS/390

                                                      68
Log Merge Utility (ALS)

           Command                          Command
 Nucleus                          Nucleus
            Manager                          Manager



                      Coupling    PLOG
                       Facility

               PLOG               ADARES

      OS/390                             OS/390
                        ASSO


                                                       69
Adabas - The Big Picture

                                                         Application


                                                                             SQL Access
                                      Web Access                            SQL Server
                                     Jadabas                                (JDBC & ODBC)
                                                                            Native SQL              Administration
                                                                                                       Review
                     Distribution                                                                      Online System
                    Vista                                                                             Statistics Facility
Adabas              Transaction                                                                       Adabas Manager
                     Manager                                                                           Adabas Utilities
                    Entire Trans. Prop.                  Adabas
                                                                                                    Security
Text Data Management                                                                            SAF Security
   Text Retrieval (TRS)                                                                         Interface *
                                                                                                Adabas Security
                                                     ClusterSupport
                                                        Cluster Services
                 Optimizers                             Parallel Services                 Migration
             Fastpath                                                                                                 VSAM
                                                                                         VSAM Bridge
             Caching Facility
                                                                                         DL/I Bridge
             Delta Save
             Triggers & Stored                 Adabas      Adabas Adabas
              Procedures
                                                                                                                              70
           Adabas - The New Open DBMS
                                   -EntireX Communicator
                                   -Tamino
                                   -EntireX Mediator
                                                                      SQL Tools
          XML
                                      Web Services
                                                                     - Adabas SQL Server v5
                                                                            -JDBC, ODBC
- EntireX Communicator                                               - Adabas Native SQL
- Natural v5 for Open Systems                                        - Partners (Neon, Natworks..)
- Tamino
- Mediator
- Natural Engineer WebStar
- Natural Web Interface                    Adabas                               .NET

                                                                        - EntireX Communicator
                                                                        - Spectrum v4.5 (2003)


                                       Replication to:
    Java/J2EE.                          DB2, Oracle,                      Application
                                        SQL Server                        Languages:
                                                                       VB, C, COBOL, PL1….
                                - Adabas Replication Tool (future)
-Jadabas                                                               - EntireX Communicator
                                - Data Warehouse and Datamarts
-JDBC through AQA                                                      - Spectrum
-EntireX Communicator                                                                                71

				
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