修改Oracle XDB占用的8080端口
Author: CopyFromWWW
Published: 2005/6/16
Read 29 times
Size 19.75 KB
XML DB Port Assignments
by Jeff Hunter, Sr. Database Administrator
Contents
Introduction
Repository Views and Default Ports
Changing XML DB Default Ports
Disabling the Port Assignment
Introduction
Oracle introduced the XML Database in release 9i. Along with this new feature, Oracle continues the practice of incorporating new, barely documented port assignments that often leave the DBA to search endlessly for possible configuration file(s) that define these port assignments. Well, when it comes to searching for where these port numbers related to XML DB are defined, you will not find them on the file system, but rather inside the database. This article will attempt to unravel some of the mysteries on managing port assignments related to Oracle XML DB. Repository Views and Default Ports
The key XML DB technologies can be grouped into two major classes - a XMLType that provides a native XML storage and retrieval capability strongly integrated with SQL, and a XML Repository that provides foldering, access control, versioning etc. for XML resources. Users view and manage XML objects like files and schemas in the XML Repository as a hierarchy of folders. This repository aspect of XML DB involves access through standard protocols such as HTTP/WebDAV and FTP. These servers will bind to ports 8080 and 2100 respectively by default.
DBA‘s will sometimes wonder why their Web Server, that always used to work, has all of the sudden been hijacked after installing Oracle9i and creating a database using DBCA. After some research, they attempt to shutdown the Oracle TNS listener and notice that the port in question (mostly 8080) is no longer being utilized. Unfortunately, there is little to tell the DBA that these ports are going to be used until they find out the hard way: When the database starts and steals the ports away from another process that hasn‘t yet started or when the other process errors and/or is unreachable.
Changing XML DB Default Ports
The following section describes the syntax that can be used to alter XML DB configuration information from within SQL*Plus. Ensure that you are logged into the database from a DBA account. In the following example, the default HTTP/WebDAV and FTP ports are changed from 8080 and 2100 to 8081 and 2111 respectively: SQL> -- Change the HTTP/WEBDAV port from 8080 to 8081 SQL> call dbms_xdb.cfg_update(updateXML( 2 dbms_xdb.cfg_get() 3 , ‘/xdbconfig/sysconfig/protocolconfig/httpconfig/http-port/text()‘ 4 , 8081)) 5 / Call completed. SQL> -- Change the FTP port from 2100 to 2111 SQL> call dbms_xdb.cfg_update(updateXML( 2 dbms_xdb.cfg_get() 3 , ‘/xdbconfig/sysconfig/protocolconfig/ftpconfig/ftp-port/text()‘ 4 , 2111)) 5 / Call completed. SQL> COMMIT; Commit complete. SQL> EXEC dbms_xdb.cfg_refresh; PL/SQL procedure successfully completed. SQL> -- Verify the change SQL> set long 100000 SQL> set pagesize 9000 SQL> SELECT dbms_xdb.cfg_get FROM dual;CFG_GET-------------------------------------------------------------------------------- 900 32 , 300 100 3600 1048576 au audio/basic avi video/x-msvideo bin application/octet-stream bmp image/bmp doc application/msword eml message/rfc822 gif image/gif htm text/html html text/html jpe image/jpeg jpeg image/jpeg jpg image/jpeg jsp text/html mid audio/mid mov video/quicktime movie video/x-sgi-movie mp3 audio/mpeg mpe video/mpg mpeg video/mpg mpg video/mpg msa application/x-msaccess msw application/x-msworks-wp pcx application/x-pc-paintbrush pdf application/pdf ppt application/vnd.ms-powerpoint ps application/postscript qt video/quicktime ra audio/x-realaudio ram audio/x-realaudio rm audio/x-realaudio rtf application/rtf rv video/x-realvideo sgml text/sgml tif image/tiff tiff image/tiff txt text/plain url text/plain vrml x-world/x-vrml wav audio/wav wpd application/wordperfect5.1 xls application/vnd.ms-excel xml text/xml zip application/x-zip-compressed en english gzip zip file tar tar file 50 6000 2111 local_listener tcp 6000 8081 local_listener tcp 6000 XDB HTTP Server 16384 2000000000 Basic realm="XDB" index.html index.htm /Test TestServlet /oradb/* DBURIServlet TestServlet Java XDB Test Servlet A servlet to test the internals of the XDB Servlet API xdbtserv xdb DBURIServlet DBURI C Servlet for accessing DBURIs authenticatedUser authenticatedUser Disabling the Port Assignment
One of the easist ways to disable Oracle from assigning both XML DB ports (FTP and HTTP/WebDAV) is to remove the following instance parameter from the database: dispatchers=‘(PROTOCOL=TCP) (SERVICE=XDB)‘This change would obviously require bouncing the database. A second way to disable the XML DB ports is to simply change their port assignments to the value of zero (0). This is an attractive option since it uses code that can be incorporated directly into database creation scripts so that the value can be tweaked each time you create a new database.
Modifying these ports to zero can also be accomplished using a GUI; Oracle Enterprise Manager (version 9.2.0.1 or higher). Simply open OEM, select and expand the database. Next, expend the XML Database item and click on Configuration. You should be able to see and change any of the XML DB configuration parameters on the right-hand side of the OEM console. Simply make your changes and click APPLY to make them permanent.
For more information on Managing Oracle XML DB Using Oracle Enterprise Manager, click here.