Additional Configuration and Tuning Parameters 

Definition

 

J2EE Engine: HTTP Provider

As HTTP is used for the communication between an application system and the XML DAS (particularly for sending and receiving resources contained in the HTTP body) and because of the dispatcher/server communication within the SAP J2EE Engine, the properties of the HTTP Provider set some limits and influence the performance of XML-based archiving.

We recommend that you check especially the following properties of the HTTP Provider and adjust them to your needs using the J2EE Engine Visual Administrator:

·        Dispatcher:

¡        MaxRequestContentLength

·        Server:

¡        ServletsLongDataTransferTimeout

¡        ServletsLongDataTransferLimit

¡        NeverCompressed

(If you want to prevent the XML DAS traffic from being compressed, enter application/octet-stream because this content type is used by both the XML DAS and its connectors.)

For a detailed explanation and default values, see HTTP Provider Service in the Administration Manual for the SAP J2EE Engine, and HTTP Provider Service in the Reference Manual for the SAP J2EE Engine.

XML DAS

Use the J2EE Engine Visual Administrator to change the properties of the XML DAS listed below. To make the changes, from the Cluster tab strip choose

·        Communication Users

<System ID> ® <Server> ® Services ® configuration adapter

then choose

Configurations ® apps ® sap.com ® tc~TechSrv~XML_DAS ® appcfg ® Propertysheet ® application.gobal.properties

¡        The default values for the XML Data Archiving administrator are:

XMLDASADMINPWD =    XMLDAS

XMLDASADMINUSR  =    XMLDAS

¡        The default values for the WebDav protocol are:

WEBDAVCLIENTPWD  =  sap630

WEBDAVCLIENTUSR  =   xmldas

For a more detailed explanation see Security Guide for XML-Based Data Archiving.

·        WebDAV parameters

¡        The default values are:

WEBDAVCONNECTIONTEMPLATELIMIT  =  5

Maximum number of concurrently open connections used per archive store residing on a WebDAV server.

 

WEBDAVCONNECTTIMEOUT  =  10000 (in milliseconds)

Timeout for opening connections (when XML DAS tries to open a socket to a WebDAV server).

 

WEBDAVEXPIRATIONTIMEOUT  =  10000 (in milliseconds)

Timeout interval after which the connection assumes that an open but unused socket has expired.

 

WEBDAVREADTIMEOUT  =  60000 (in milliseconds)

Timeout interval during which a connection waits for responses from a WebDAV server. This timeout is applied to blocking read operations.