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    SAP Dual-Stack System (SAP Application Server ABAP+Java)

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    JagroopSinghBalhra
    The document discusses SAP dual-stack systems, which have both ABAP and Java application servers running on the same system. A dual-stack system requires primary ABAP and Java application server instances, along with ABAP and Java central services instances. It can also include additional application server and enqueue replication server instances. Dual-stack systems can be configured standard, distributed, or high availability, with instances placed on single or multiple hosts.

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    Attribution Non-Commercial (BY-NC)
    Download as PDF, TXT or read online from Scribd

    SAP Dual-Stack System (SAP Application Server ABAP+Java)

    Uploaded by

    JagroopSinghBalhra
    86 views4 pages
    The document discusses SAP dual-stack systems, which have both ABAP and Java application servers running on the same system. A dual-stack system requires primary ABAP and Java application server instances, along with ABAP and Java central services instances. It can also include additional application server and enqueue replication server instances. Dual-stack systems can be configured standard, distributed, or high availability, with instances placed on single or multiple hosts.

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    DOC-116226

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    The document discusses SAP dual-stack systems, which have both ABAP and Java application servers running on the same system. A dual-stack system requires primary ABAP and Java application server instances, along with ABAP and Java central services instances. It can also include additional application server and enqueue replication server instances. Dual-stack systems can be configured standard, distributed, or high availability, with instances placed on single or multiple hosts.

    Copyright:

    Attribution Non-Commercial (BY-NC)
    Download as PDF, TXT or read online from Scribd
    Download as pdf or txt
    86 views4 pages

    SAP Dual-Stack System (SAP Application Server ABAP+Java)

    Uploaded by

    JagroopSinghBalhra
    The document discusses SAP dual-stack systems, which have both ABAP and Java application servers running on the same system. A dual-stack system requires primary ABAP and Java application server instances, along with ABAP and Java central services instances. It can also include additional application server and enqueue replication server instances. Dual-stack systems can be configured standard, distributed, or high availability, with instances placed on single or multiple hosts.

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    Download as PDF, TXT or read online from Scribd
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    SAP Dual-Stack System (SAP Application

    Server ABAP+Java)

    SAP System Architecture (Table of Contents)


    SAP System Instances

    Primary Application Server Instance (Central Instance)

    Central Services Instance (ASCS Instance and SCS Instance

    Motivation for Providing an ASCS Instance with Every ABAP Stack

    Enqueue Replication Server Instance

    Database Instance

    Additional Application Server Instance (Dialog Instance)

    SAP ABAP System (SAP Application Server ABAP)

    Standard (Central) SAP ABAP System (Graphical Overview)

    Distributed SAP ABAP System (Graphical Overview)

    High-Availability SAP ABAP System

    SAP Java System (SAP Application Server Java)

    Standard (Central) SAP Java System (Graphical Overview)

    Distributed SAP Java System (Graphical Overview)

    High-Availability SAP Java System

    SAP Dual-Stack System (SAP Application Server ABAP+Java)

    Generated by Jive SBS on 2011-04-03+02:00


    1
    SAP Dual-Stack System (SAP Application Server ABAP+Java)

    Standard (Central) SAP Dual-Stack System (Graphical Overview)

    Distributed SAP Dual-Stack System (Graphical Overview)

    High-Availability SAP Dual-Stack System

    ======================================================

    SAP Dual-Stack System (SAP Application


    Server ABAP+Java)
    An SAP dual-stack system has both an Application Server ABAP and an Application Server
    Java in the same system. This means, that every application server instance has both an
    ABAP stack and a Java stack on the same host. The database instance of an ABAP+Java
    system has an ABAP schema and a Java schema. The ABAP stack communicates with the
    Java stack using standard RFC calls.

    You can install an ABAP+Java system based on SAP NetWeaver 7.0 or higher in one
    installation run (new system).

    Note:

    • If your ABAP system is based on SAP NetWeaver 7.0 (without Enhancement Packages), you can still
    install the Java Add-In to an already existing ABAP system.
    • SAP dual-stack (ABAP+Java) systems based on SAP NetWeaver 7.0 Enhancement Package 1 or higher
    can only be installed with
    software unit (usage type) SAP Process Integration (PI) or software unit (usage type) SAP Mobile
    Infrastructure (MI).
    • SAP dual-stack (ABAP+Java) systems based on SAP NetWeaver 7.1 or higher can only be installed with
    usage type (software unit)
    SAP Process Integration (PI) .
    • See SAP's dual-stack recommendations at http://www.sdn.sap.com/irj/sdn/landscapedesign.

    Generated by Jive SBS on 2011-04-03+02:00


    2
    SAP Dual-Stack System (SAP Application Server ABAP+Java)

    New SAP dual-stack (ABAP+Java) systems based on SAP NetWeaver 7.0 Enhancement
    Package 1 or higher can only be installed with software unit (usage type) SAP Process
    Integration (PI) or software unit (usage type) SAP Mobile Infrastructure (MI).

    New SAP dual-stack (ABAP+Java) systems based on SAP NetWeaver 7.1 or higher can
    only be installed with software unit (usage type) SAP Process Integration (PI) .

    SAP Dual-Stack (ABAP+Java) System Instances


    Mandatory SAP dual-stack (ABAP+Java) system instances are:

    • Primary application server instance (central instance)


    • ABAP central services instance (ASCS)
    The ASCS is only mandatory for newly installed SAP ABAP systems based on SAP NetWeaver 7.2 and
    higher.
    • Java central services instance (SCS)
    • Database instance

    Optional instances are:

    • ABAP central services instance (ASCS)


    The ASCS is only optional for SAP ABAP systems based on SAP NetWeaver lower than 7.2.
    • Enqueue replication server instance (ERS)
    An ERS is required both for the ASCS and the SCS
    • Additional application server instances (dialog instances)

    Distribution of SAP Dual-Stack (ABAP+Java) System Instances


    You can distribute the instances as follows:

    • Standard (Central) SAP Dual-Stack (ABAP+Java) System (for SAP systems based on SAP NetWeaver
    lower than 7.1, this distribution variant is still named "central system"):

    Generated by Jive SBS on 2011-04-03+02:00


    3
    SAP Dual-Stack System (SAP Application Server ABAP+Java)

    All SAP system instances reside on one and the same host. You can have additional application server
    (dialog) instances either on the host of the primary application server (central) instance or on separate
    hosts.
    Standard (Central) SAP Dual-Stack (ABAP+Java) System (Graphical Overview)

    • Distributed SAP Dual-Stack (ABAP+Java) System:


    At least one SAP system instance resides on a host other than the remaining instances. Each SAP system
    instance can be installed on a separate host.
    Distributed SAP Dual-Stack (ABAP+Java) System (Graphical Overview)

    • High Availability SAP Dual-Stack (ABAP+Java) System


    A high availability SAP Dual-Stack (ABAP+Java) system is a distributed system whose system instances
    are installed in such a way as to protect them against failover. This is achieved by protecting Instances
    with critical components by installing them on hardware clusters, and instances with non-critical
    components are installed redundantly on several hosts.
    High-availability SAP dual-stack (ABAP+Java) system

    See also
    SAP System Instances

    Generated by Jive SBS on 2011-04-03+02:00


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