A good article that describes websphere classloading policies ... PARENT_FIRST, PARENT_LAST etc...
J2EE Class Loading Demystified
A Look At The Java Class Loader
Saturday, December 10, 2005
Turn Off WAS Global Security
If you happen to forget WebSphere administrative console password, or are locked out due to user registry problems etc and cannot login to your admin console, you may want to turn off WebSphere Application Server global security from outside the administrative console so that you can login to admin console. To do so you can either change the security.xml file of WAS or use the wsadmin tool for it.
Using WAS command-line client wsadmin (run with root privileges):
1. Open a connection to local WAS in offline mode
wsadmin -conntype NONE
2. Turn off global security
wsadmin> securityoff
3. Save
wsadmin> $AdminConfig save
Originally documented by Bill Higgins and Bobby Woolf.The only other alternative is to modify the WAS_HOME\config\cells\cellname\security.xml file in your was directy
Using WAS command-line client wsadmin (run with root privileges):
1. Open a connection to local WAS in offline mode
wsadmin -conntype NONE
2. Turn off global security
wsadmin> securityoff
3. Save
wsadmin> $AdminConfig save
Originally documented by Bill Higgins and Bobby Woolf.The only other alternative is to modify the WAS_HOME\config\cells\cellname\security.xml file in your was directy
TAM Configuration
Tivoli Access Manager Configuration Steps for using AznAPI:
1.) Configure AMRTE
2.) Configure AMJRTE (This will install the necessary library files on the system.)
3.) Use SvrSslCfg to create the properties and keystore files.
4.) Copy the .properties file to PDPerm.properties file in websphere java/jre directory.
5.) Make sure the .properties file points to the correct keystore(.ks) file.
Co-locating Tivoli Access Manager with websphere
1.) Configure AMRTE
2.) Configure AMJRTE
3.) Configure AM Authz Server
4.) Use SvrSslCfg to obtain the appropriate properties and keystore files and copy them to the appropriate directories as mentioned above.
5.) Use the local authz server while using SvrSslCfg. Alternatively just modify the "appsvr-authzsvrs" variable in the properties file to point to the local authz server.
6.) While configuring the Authz Server, the AMRTE had to be re-configured. The reason for having to do so, has not been identified.
Note: If the connection to the authz server is broken in the process of authorization,then the authz server does not throw an exception but simply returns false to the authz query.
1.) Configure AMRTE
2.) Configure AMJRTE (This will install the necessary library files on the system.)
3.) Use SvrSslCfg to create the properties and keystore files.
4.) Copy the .properties file to PDPerm.properties file in websphere java/jre directory.
5.) Make sure the .properties file points to the correct keystore(.ks) file.
Co-locating Tivoli Access Manager with websphere
1.) Configure AMRTE
2.) Configure AMJRTE
3.) Configure AM Authz Server
4.) Use SvrSslCfg to obtain the appropriate properties and keystore files and copy them to the appropriate directories as mentioned above.
5.) Use the local authz server while using SvrSslCfg. Alternatively just modify the "appsvr-authzsvrs" variable in the properties file to point to the local authz server.
6.) While configuring the Authz Server, the AMRTE had to be re-configured. The reason for having to do so, has not been identified.
Note: If the connection to the authz server is broken in the process of authorization,then the authz server does not throw an exception but simply returns false to the authz query.
Security Attribute Propagation Security Attribute Propagation in WebSphereSecurity attribute propagation provides propagation services using Java serialization for any objects that are contained in the Subject. And since serialization problems can occur when dealing with multiple platforms Websphere application server also offers a token framework that enables custom serialization fucntionality. When a request is being authenticated, a determination is made by the login modules whether this is an initial login or a propagation login.
- An initial login is the process of authenticating the user information, typically a user ID and password, and then calling the application programming interfaces (APIs) for the remote user registry to look up secure attributes that represent the user access rights.
- A propagation login is the process of validating the user information, typically an Lightweight Third Party Authentication (LTPA) token, and then deserializing a series of tokens that constitute both custom objects and token framework objects known to the WebSphere Application Server.
Struts Error
Struts error "Cannot find bean under name org.apache.struts.taglib.html.BEAN"
Check:
1.) Improper use of a struts tag.
2.) Form bean properties not properly set.
3.) When using tiles, make sure that forms are not nested.
4.) When <html /> <html:xxxxx> is defined outside of <html:form> </html:form>
Thursday, November 17, 2005
developerWorks : Architecture
IBM Developerworks has come up with a new architecture zone. Hope it will be as good as the other developerworks areas. It is available here.
Monday, October 31, 2005
Social bookmarking
I came know of this quite recently. I find it quite useful. Apart from being able share your bookmarks across browsers, you can now share them with others too. del.icio.us offers quite cool features for sharing your favorite bookmarks. You can share your bookmarks, tag them (i.e. use keywords to categorize them), find other users with similar interests and browse through their bookmarks. I find it a very good source for finding resources - a selective search for the topics you are interested in.
And to add to that, you can even have browser buttons to quickly add any bookmarks you find to your online bookmarks.
Here is my delicious:
My delicious
And to add to that, you can even have browser buttons to quickly add any bookmarks you find to your online bookmarks.
Here is my delicious:
My delicious
Subscribe to:
Posts (Atom)