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c. Disable the IEFUSI exit in member SMFPRMxx for SUBSYS(OMVS):SUBSYS(OMVS,EXITS(...)) to avoid a limit on memory allocation for ASCS and SCS. d. Implement zFS file systems instead of HFS for enhanced performance. Configuring z/OS UNIX System Services Review the BPXPRMxx parameters, the TCP/IP setup, and the NFS and file system setup as explained in the Planning Guide SAP on IBM DB2 for z/OS, version: 2.50 - 2011-10-01, and the appropriate Installation Guides - SAP NetWeaver 7.3 at: https://websmp205.sap-ag.de/~sapidb/011000358700001259432010E#q5 The following the z/OS UNIX System Services parameters have worked well in several client installations. Review them carefully and adapt them to your needs. ► MAXPROCSYS(4096) ► MAXPROCUSER(200) ► MAXTHREADTASKS(1000) ► MAXTHREADS(200) ► MAXUIDS(200) ► MAXPTYS(256) ► CTRACE(CTIBPX00) ► IPCMSGQMNUM(20000) ► IPCMSGQBYTES(1048576) ► IPCSHMSPAGES(786432) ► IPCSHMNSEGS(100) ► IPCSEMNIDS(4096) ► IPCSHMNIDS(4096) ► IPCSEMNSEMS(32767) ► IPCSEMNOPS(32767) ► MAXMMAPAREA(4096) ► MAXSHAREPAGES(131072) ► FORKCOPY(COW) ► FILESYSTYPE TYPE(INET) ENTRYPOINT(EZBPFINI) ► NETWORK DOMAINNAME(AF_INET) ► DOMAINNUMBER(2) ► TYPE(INET) In addition, you can use the following parameters as recommended in the Planning Guide SAP on IBM DB2 for z/OS, version: 2.50 - 2011-10-01: ► MAXFILEPROC(64000) ► MAXFILESIZE (omit) ► IPCSHMMPAGES(524287) ► MAXCORESIZE(2147483647) ► MAXASSIZE(2147483647) ► MAXCPUTIME(2147483647) ► USERALIASTABLE(/etc/ualiastable) ► MAXSOCKETS(2000) To configure z/OS UNIX System Services: 1. Review SAP Note 81737 for the z/OS and DB2 maintenance levels. Use the SAP PTF Checker after the initial installation. See SAP Note 183311 - PTF check tool. 170 Running SAP Solutions with IBM DB2 10 for z/OS on the IBM zEnterprise System
2. Define and configure TCP/IP for Gigabit Ethernet (GbE) connections: – See Business Continuity for SAP on IBM System z, SC33-8206-04. – Use jumbo frames (MTU = 8992). – See SAP Note 1263782 for HiperSockets recommendations. HiperSockets for Linux on System z with z/OS LPAR communication needs an (MTU=8K). – DELAYACKS is the default. Use DELAYACKS for SAP on System z. – Verify that the z/OS TCP/IP Send and Receive buffer sizes are at least 8 times the maximum transmission unit (MTU) size. 3. Customize the OSA definitions: – Disable TCP/IP Segmentation Offload for OSA ports. – Specify INBPERF DYNAMIC in the LINK statement for the OSA ports. If the OSA microcode level does not support DYNAMIC, specify MINLATENCY. This setting reduces network latency related to the batching of packets that are presented by the OSA Express card to the z/OS LPAR. For more information about the INBPERF clause, see “DEVICE and LINK — MPCIPA OSA-Express QDIO devices statement” in z/OS V1R10.0 Communications Server: IP Configuration Reference: SC31-8776-15: http://publibz.boulder.ibm.com/epubs/pdf/f1a1b481.pdf Preparing the z/OS Security Server (RACF) Define the necessary USERIDS and GROUPS as explained in the SAP Security Guide: IBM DB2 for z/OS: 1. Define z/OS ABAP Group ID SAPR3 as the SAP schema name for the ABAP DB2 objects. 2. Define DB2 Connect User ID ADBC for the ABAP database connection. 3. Define z/OS Java Group ID SAPJAVA as the SAP schema name for the Java DB2 objects. 4. Define DB2 Connect User ID JDBC for the Java database connection. 5. Define the z/OS Group IDs SAPSYS and SAPINST. 6. Define installation user ID SAPINST (superuser) for z/OS Central Services. (Linux on System z uses the Linux root user.) 7. Define the user ID adm to run z/OS Central Services. (Linux on System z uses Linux user adm and Linux group sapsys.) 8. Define the installation user ID with DB2 SYSADM authority for installation tasks (SYSOPR1 or SYSOPR2 from ZPARMS can be used). 9. Post installation: Define a superuser to start or run SAPOSCOL and SAPCCMSR under z/OS UNIX System Services. Setting up the z/OS Shared Filesystem SAP requires shared application server access to specific file systems, called global, profile, and transport, on any platform. To set up the z/OS Shared Filesystem: 1. Place the global, profile, and transport file systems on z/OS UNIX System Services zFS file systems, which are fast, robust, and Sysplex HA capable. The NFS server exports the files and directories in the shared file system to the application servers. 2. Make the directories available by using NFS for Linux on System z, x86 Linux, or AIX application servers. Appendix B. Planning, preparing, and implementing the SAP landscape 171
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ibm.com/redbooks Front cover Runnin
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Note: Before using this information
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2.10.2 IBM zEnterprise BladeCenter
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System software planning. . . . . .
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Trademarks IBM, the IBM logo, and i
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Maxim Kukarev is a Client Technical
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xii Running SAP Solutions with IBM
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1.1 IBM DB2 on System z and SAP The
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technologies, it provides advanced
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1.2.3 SAP Industry Solutions SAP In
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8 Running SAP Solutions with IBM DB
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2.1 SAP NetWeaver composition 2.1.1
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Consequently, the central instances
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► Data layer. The database instan
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Integration ESB / Connectors Figure
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2.4 Rolling maintenance Within one
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2.7 Database server Another compone
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Metro Mirror Figure 2-7 Metro and M
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2.10.4 zEnterprise Ensemble System
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System p or System x AIX, Linux on
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SAP mixed 3-tier structure The data
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3.1 Features implicitly used by SAP
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3.1.4 Scalability improvements for
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Insert time per row in msec. 500,00
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New tables are automatically create
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3.3 SAP modifications to optimize t
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The solution is the Hybrid DBSL, wh
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Figure 3-5 New DBM1 display Enhance
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- Accumulated wait time for global
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The view shown in Figure 3-8 for th
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3.4.1 IN-list in-memory tables DB2
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With DB2 10, the new access type NR
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2. Ensure that the user who is crea
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4.1 Installing Linux on System z, S
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Installing the server from DVD We i
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Verifying the installation In the I
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Registration: To access the SAP Ser
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Figure 4-4 Support Package list Fig
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lnxsu11:t73adm 64> telnet wtsc59oe
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2. Configure the JCL head. From the
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4.2.2 Considerations for migration
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Figure 4-8 DB2_V10_CHECK report Imp
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4.2.4 Considerations for data shari
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You must make the following changes
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lnxsu11 Figure 4-12 SAP system land
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Product Vendor Type Version SAP Net
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5.1 Functions of Unified Resource M
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5.2 Simplifying management tasks in
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Figure 5-6 DBA Cockpit initial pane
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Figure 5-8 Global Times panel Tip:
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Figure 5-10 Buffer Pools The Buffer
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Table 5-1 highlights the tasks or a
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Tip: To enable the capture of syspl
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Figure 5-14 AIX monitoring data Fig
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► DB2 Network Stats ABAP report (
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3. Enter the perfkit command to sta
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You can also access monitoring data
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Example 5-3 Linux memory utilizatio
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In addition to user resource utiliz
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In a high availability system, ever
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7.1 Classifications of virtualizati
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7.2 Resources to the virtual machin
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112 Running SAP Solutions with IBM
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8.1 Separation of duties for databa
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authority is granted to an entire D
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malicious or careless unauthorized
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Page 158 and 159: The SAP implementation process from
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Page 162 and 163: Key documentation From the IT and C
Page 164 and 165: Then you see a list of SAP Notes th
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Page 170 and 171: participate in the failover automat
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Page 188 and 189: Additional information: For more in
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Page 192 and 193: ARC The archive log data sets. CI T
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Page 196 and 197: Figure B-4 illustrates how SAP uses
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Page 206 and 207: - SMS constructs and ACS routines -
Page 208 and 209: Downloading and extracting the web
Page 210 and 211: PI Process Integration PIT point-in
Page 212 and 213: SAP Notes Registration required: To
Page 216 and 217: DSNACCOX usage 45 dual-log LG1 and
Page 218 and 219: untime environment 13 software 162
Page 222: Running SAP Solutions with IBM DB2
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