# Know which version is supported for your scenario and
where to find the software.
# Find the online documentation of SAP Web Dispatcher.
SAP Web Dispatcher is a load balancer and reverse proxy that
can be used with different web application server backends:
- SAP
NetWeaver Application Server ABAP
- SAP
NetWeaver Application Server Java
- SAP
HANA XS, both in the "Classic" and "Advanced" flavor
- Any
web server
Note: HANA XS Classic and HANA XS Advanced come
with an internal Web Dispatcher of version 7.53. This
note does not apply to this internal HANA Web Dispatcher. It cannot be
used as a load balancer or reverse proxy for other systems. It is not possible to
upgrade the Web Dispatcher version inside these products.
Selecting a SAP Web Dispatcher Version
SAP Web Dispatcher version 7.93 is recommended for most
deployments.
SAP Web Dispatcher is downward compatible; the newest SAP
Web Dispatcher can be used with all older backend systems.
If the recommended version is not supported on your
operating system then pick the highest SAP Web Dispatcher version that is
supported. See section Supported Operating Systems below.
We recommend the SAP Web Dispatcher version to be
greater or equal to the kernel version of your backend system. The patch level
is not relevant. If you have to use a SAP Web Dispatcher version that is lower
than the kernel of your backend system some features of the AS ABAP may not be
not available.
We recommend using the most current SAP Web Dispatcher patch
level. There is no concept of "stack kernel" in SAP Web Dispatcher.
Additional notes:
- For details on SAP Web Dispatcher versions, corresponding product versions, release notes, incompatible changes, maintenance schedule and documentation,
- Incompatible
changes:
- There
are no incompatible changes in SAP Web Dispatcher 7.89 and 7.85 with
respect to 7.81.
- SAP
Web Dispatcher 7.81 contains some slightly incompatible changes of
configuration parameters with respect to version 7.77. See the section
"Upgrade to the current version from earlier versions" below for
details.
- SAP
Web Dispatcher 7.73 and 7.77 contain some slightly incompatible changes
of configuration parameters with respect to version 7.53. See the section "Upgrade to the current version from earlier versions"
below for details.
- Supported
operating systems: The latest SAP Web Dispatcher supports the operating
systems Linux on x86 and PPC LE, Windows and AIX. If you have to deploy
SAP Web Dispatcher on another operating system then use the highest
version that supports that operating system. See the section
"Supported Operating Systems for SAP Web Dispatcher Versions".
- Unicode:
The Unicode SAP Web Dispatcher supports both Unicode and non-Unicode
backend systems.
- The
Product Availability Matrix (PAM) of some older SAP products lists
outdated versions of SAP Web Dispatcher (e.g. for SAP NetWeaver). Please
disregard such information of the PAM and follow the recommendation of
this note instead.
Updating SAP Web Dispatcher
We generally recommend using the SAP Web Dispatcher with the most current patch level of the used version. The update is done simply by exchanging the executables. You may update SAP Web Dispatcher to the latest patch level of the currently installed version or to a different version. There is no automated upgrade procedure for SAP Web Dispatcher.
Online Documentation for the SAP Web Dispatcher
Navigate to http://help.sap.com
-> Enter "ABAP Platform and SAP NetWeaver"
into the search field
-> Select the first link
-> Select the desired version
-> Application Server ABAP Infrastructure
-> Components of Application Server ABAP
-> SAP Web Dispatcher
SAP Web Dispatcher is always delivered as part of another
SAP product. The SAP Web Dispatcher release notes are part of that product. The
following table helps you identify the corresponding product and release notes.
SAP Web Dispatcher release notes are found under the topic "Application
Server Infrastructure".
This table indicates which minimum version of SAP Web
Dispatcher to use with a certain SAP product version. For details see section
"Selecting a SAP Web Dispatcher Version" above.
The maintenance schedule of the SAP Web Dispatcher is
identical with the SAP Kernel. The maintenance end dates can be read from the
notes referenced in the table below. The other information in the notes
regarding which kernel can be used with which S/4HANA or NetWeaver
release cannot be applied to SAP Web Dispatcher. See section
"Selecting a SAP Web Dispatcher Version" above.
The release notes for both BC-CST-WDP and BC-CST-IC are
relevant for SAP Web Dispatcher unless the feature explicitly applies only to
Internet Connection manager (ICM).
Reference document :
908097 - SAP Web Dispatcher: Release, Installation, Patches,
Documentation