08 Jun

Web 3.0, starting point for technical person

After understanding what is Web 3.0 for any technical resource the next question is what to do next?

18 May

Software Development Methodologies

As these days I am writing about Scrum which is one of the agile methodologies, I though it could be nice if I can also list the other popular software development methodologies.

Three software development patterns mashed tog...
Image via Wikipedia

I have listed all these and also linked them to wiki as it has one of the very good definitions and details about every agile methodology.

Once I am done with the Scrum series I will touch the other ones. Hope this helps!

  1. Agile
  2. Cleanroom
  3. Iterative
  4. RAD
  5. RUP
  6. Spiral
  7. Waterfall
  8. Lean
  9. V-Model
  10. TDD
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16 May

Messages: WebSphere Application Server, Version 5.1.x

Here are some of the common messages that you may get while working with Websphere Application Server 5.1.x. I found this list at IBM publib:

WSVR0001I: Server {0} open for e-business
Explanation: This exception is unexpected. The cause is not immediately known.
User Response: If the problem persists, see problem determination information on the WebSphere Application Server Support page at http://www.ibm.com/software/webservers/appserv/was/support/.

WSVR0002I: Server {0} open for e-business, problems occurred during startup
Explanation: This exception is unexpected. The cause is not immediately known.
User Response: If the problem persists, see problem determination information on the WebSphere Application Server Support page at http://www.ibm.com/software/webservers/appserv/was/support/.

WSVR0003E: Server {0} failed to start {1}
Explanation: This exception is unexpected. The cause is not immediately known.
User Response: If the problem persists, see problem determination information on the WebSphere Application Server Support page at http://www.ibm.com/software/webservers/appserv/was/support/.

WSVR0004E: The server name, {0}, is not a valid name.
Explanation: There is a mismatch between the name of the server speicified and the server name in the corresponding server.xml.
User Response: Make sure that the server name specified matches both the directory name for the server and the server name in the corresponding server.xml.

WSVR0007E: Could not find the {0} object in {1}
Explanation: This exception is unexpected. The cause is not immediately known.
User Response: If the problem persists, see problem determination information on the WebSphere Application Server Support page at http://www.ibm.com/software/webservers/appserv/was/support/.

WSVR0008E: Error encountered reading {0} {1}
Explanation: This exception is unexpected. The cause is not immediately known.
User Response: If the problem persists, see problem determination information on the WebSphere Application Server Support page at http://www.ibm.com/software/webservers/appserv/was/support/.

WSVR0009E: Error occurred during startup {0}
Explanation: This exception is unexpected. The cause is not immediately known.
User Response: If the problem persists, see problem determination information on the WebSphere Application Server Support page at http://www.ibm.com/software/webservers/appserv/was/support/.

WSVR0016W: Classpath entry, {0}, in Resource, {1}, located at {2} has an invalid variable
Explanation: A variable used in the classpath definition of the resource is not defined or does not contain a valid value.
User Response: Define the missing variable or provide a valid value for the missing variable.

WSVR0017E: Error encountered binding the J2EE resource, {0}, as {1} from {2} {3}
Explanation: This exception is unexpected. The cause is not immediately known.
User Response: If the problem persists, see problem determination information on the WebSphere Application Server Support page at http://www.ibm.com/software/webservers/appserv/was/support/.

WSVR0018W: Unable to create CustomService, {0} {1}
Explanation: This exception is unexpected. The cause is not immediately known.
User Response: If the problem persists, see problem determination information on the WebSphere Application Server Support page at http://www.ibm.com/software/webservers/appserv/was/support/.

WSVR0019W: CustomService, {0}, failed to initialize. {1}
Explanation: This exception is unexpected. The cause is not immediately known.
User Response: If the problem persists, see problem determination information on the WebSphere Application Server Support page at http://www.ibm.com/software/webservers/appserv/was/support/.

WSVR0020W: CustomService, {0}, failed to shutdown. {1}
Explanation: This exception is unexpected. The cause is not immediately known.
User Response: If the problem persists, see problem determination information on the WebSphere Application Server Support page at http://www.ibm.com/software/webservers/appserv/was/support/.

WSVR0021W: Native path entry, {0}, in Resource, {1}, located at {2} has an invalid variable
Explanation: A variable used in the native path definition of the resource is not defined or does not contain a valid value.
User Response: Define the missing variable or provide a valid value for the missing variable.

WSVR0022W: The value, {0}, with Resource ID, {1}, located at {2} has an invalid variable
Explanation: A variable used in the resource is not defined or does not contain a valid value.
User Response: Define the missing variable or provide a valid value for the missing variable.

WSVR0024I: Server {0} stopped
Explanation: This exception is unexpected. The cause is not immediately known.
User Response: If the problem persists, see problem determination information on the WebSphere Application Server Support page at http://www.ibm.com/software/webservers/appserv/was/support/.

WSVR0025I: Creating temporary product license
Explanation: None
User Response: None

WSVR0026I: Error occurred while validating product license
Explanation: None
User Response: None

WSVR0027I: The product will expire in {0} days.
Explanation: None
User Response: None

WSVR0028I: The product has expired. Please re-install or purchase the product.
Explanation: None
User Response: None

WSVR0030E: ORB not initialized
Explanation: This exception is unexpected. The cause is not immediately known.
User Response: If the problem persists, see problem determination information on the WebSphere Application Server Support page at http://www.ibm.com/software/webservers/appserv/was/support/.

WSVR0031E: Unable to load container {0}
Explanation: This exception is unexpected. The cause is not immediately known.
User Response: If the problem persists, see problem determination information on the WebSphere Application Server Support page at http://www.ibm.com/software/webservers/appserv/was/support/.

WSVR0032E: Object Adapter created already
Explanation: This exception is unexpected. The cause is not immediately known.
User Response: If the problem persists, see problem determination information on the WebSphere Application Server Support page at http://www.ibm.com/software/webservers/appserv/was/support/.

WSVR0033E: Unable to load security collaborator, {0} {1}
Explanation: This exception is unexpected. The cause is not immediately known.
User Response: If the problem persists, see problem determination information on the WebSphere Application Server Support page at http://www.ibm.com/software/webservers/appserv/was/support/.

WSVR0034W: Invalid passivation directory specified: {0}
Explanation: This exception is unexpected. The cause is not immediately known.
User Response: If the problem persists, see problem determination information on the WebSphere Application Server Support page at http://www.ibm.com/software/webservers/appserv/was/support/.

WSVR0035E: Failure to initialized the container: {0}
Explanation: This exception is unexpected. The cause is not immediately known.
User Response: If the problem persists, see problem determination information on the WebSphere Application Server Support page at http://www.ibm.com/software/webservers/appserv/was/support/.

WSVR0036E: Failure to obtain initial naming context: {0}
Explanation: This exception is unexpected. The cause is not immediately known.
User Response: If the problem persists, see problem determination information on the WebSphere Application Server Support page at http://www.ibm.com/software/webservers/appserv/was/support/.

WSVR0037I: Starting EJB jar: {0}
Explanation: This exception is unexpected. The cause is not immediately known.
User Response: If the problem persists, see problem determination information on the WebSphere Application Server Support page at http://www.ibm.com/software/webservers/appserv/was/support/.

WSVR0038I: No JNDI name found for {0}, binding home name as {1}
Explanation: This exception is unexpected. The cause is not immediately known.
User Response: If the problem persists, see problem determination information on the WebSphere Application Server Support page at http://www.ibm.com/software/webservers/appserv/was/support/.

WSVR0039E: Unable to start EJB jar, {0}: {1}
Explanation: This exception is unexpected. The cause is not immediately known.
User Response: If the problem persists, see problem determination information on the WebSphere Application Server Support page at http://www.ibm.com/software/webservers/appserv/was/support/.

WSVR0040E: addEjbModule failed for {0} {1}
Explanation: This exception is unexpected. The cause is not immediately known.
User Response: If the problem persists, see problem determination information on the WebSphere Application Server Support page at http://www.ibm.com/software/webservers/appserv/was/support/.

WSVR0041I: Stopping EJB jar: {0}
Explanation: This exception is unexpected. The cause is not immediately known.
User Response: If the problem persists, see problem determination information on the WebSphere Application Server Support page at http://www.ibm.com/software/webservers/appserv/was/support/.

WSVR0042E: Unable to stop {0}: {1}
Explanation: This exception is unexpected. The cause is not immediately known.
User Response: If the problem persists, see problem determination information on the WebSphere Application Server Support page at http://www.ibm.com/software/webservers/appserv/was/support/.

WSVR0043E: Unbind failed for {0}: {1}
Explanation: This exception is unexpected. The cause is not immediately known.
User Response: If the problem persists, see problem determination information on the WebSphere Application Server Support page at http://www.ibm.com/software/webservers/appserv/was/support/.

WSVR0044E: Unable to stop EJB jar, {0}: {1}
Explanation: This exception is unexpected. The cause is not immediately known.
User Response: If the problem persists, see problem determination information on the WebSphere Application Server Support page at http://www.ibm.com/software/webservers/appserv/was/support/.

WSVR0045E: Unable to create sub-context {0}: {1}
Explanation: This exception is unexpected. The cause is not immediately known.
User Response: If the problem persists, see problem determination information on the WebSphere Application Server Support page at http://www.ibm.com/software/webservers/appserv/was/support/.

WSVR0046E: Unable to bind, {0}: {1}
Explanation: This exception is unexpected. The cause is not immediately known.
User Response: If the problem persists, see problem determination information on the WebSphere Application Server Support page at http://www.ibm.com/software/webservers/appserv/was/support/.

WSVR0047E: Batch naming operation failed : {0}
Explanation: This exception is unexpected. The cause is not immediately known.
User Response: If the problem persists, see problem determination information on the WebSphere Application Server Support page at http://www.ibm.com/software/webservers/appserv/was/support/.

WSVR0048W: Binding {0} failed, no JNDI name found
Explanation: This exception is unexpected. The cause is not immediately known.
User Response: If the problem persists, see problem determination information on the WebSphere Application Server Support page at http://www.ibm.com/software/webservers/appserv/was/support/.

WSVR0049I: Binding {0} as {1}
Explanation: This exception is unexpected. The cause is not immediately known.
User Response: If the problem persists, see problem determination information on the WebSphere Application Server Support page at http://www.ibm.com/software/webservers/appserv/was/support/.

WSVR0051W: Attempted to register a URL Provider, {0}, with a null protocol
Explanation: This exception is unexpected. The cause is not immediately known.
User Response: If the problem persists, see problem determination information on the WebSphere Application Server Support page at http://www.ibm.com/software/webservers/appserv/was/support/.

WSVR0052W: Attempted to unregister URLProvider with null protocol
Explanation: This exception is unexpected. The cause is not immediately known.
User Response: If the problem persists, see problem determination information on the WebSphere Application Server Support page at http://www.ibm.com/software/webservers/appserv/was/support/.

WSVR0055W: Unexpected objectToKey method callback for object {0}.
Explanation: This exception is unexpected. The cause is not immediately known.
User Response: If the problem persists, see problem determination information on the WebSphere Application Server Support page at http://www.ibm.com/software/webservers/appserv/was/support/.

WSVR0056W: Tie class of {0} can not be found.
Explanation: This exception is unexpected. The cause is not immediately known.
User Response: If the problem persists, see problem determination information on the WebSphere Application Server Support page at http://www.ibm.com/software/webservers/appserv/was/support/.

WSVR0062E: Unable to start EJB, {0}: {1}
Explanation: This exception is unexpected. The cause is not immediately known.
User Response: If the problem persists, see problem determination information on the WebSphere Application Server Support page at http://www.ibm.com/software/webservers/appserv/was/support/.

WSVR0064W: Minimum threads for pool {0} was less than 0; changing from {1} to 0
Explanation: This exception is unexpected. The cause is not immediately known.
User Response: If the problem persists, see problem determination information on the WebSphere Application Server Support page at http://www.ibm.com/software/webservers/appserv/was/support/.

WSVR0065W: Maximum threads for pool {0} was less than 1; changing from {1} to 1
Explanation: This exception is unexpected. The cause is not immediately known.
User Response: If the problem persists, see problem determination information on the WebSphere Application Server Support page at http://www.ibm.com/software/webservers/appserv/was/support/.

WSVR0066W: Maximum threads for pool {0} was less than the minimum; changing from {1} to {2}
Explanation: This exception is unexpected. The cause is not immediately known.
User Response: If the problem persists, see problem determination information on the WebSphere Application Server Support page at http://www.ibm.com/software/webservers/appserv/was/support/.

WSVR0100W: An error occurred initializing, {0} {1}
Explanation: This exception is unexpected. The cause is not immediately known.
User Response: If the problem persists, see problem determination information on the WebSphere Application Server Support page at http://www.ibm.com/software/webservers/appserv/was/support/.

WSVR0101W: An error occurred starting, {0}
Explanation: This exception is unexpected. The cause is not immediately known.
User Response: If the problem persists, see problem determination information on the WebSphere Application Server Support page at http://www.ibm.com/software/webservers/appserv/was/support/.

WSVR0102E: An error occurred stopping, {0} {1}
Explanation: This exception is unexpected. The cause is not immediately known.
User Response: If the problem persists, see problem determination information on the WebSphere Application Server Support page at http://www.ibm.com/software/webservers/appserv/was/support/.

WSVR0103E: An error occurred destroying, {0} {1}
Explanation: This exception is unexpected. The cause is not immediately known.
User Response: If the problem persists, see problem determination information on the WebSphere Application Server Support page at http://www.ibm.com/software/webservers/appserv/was/support/.

WSVR0104E: No type or class defined in {0} at line {1}
Explanation: This exception is unexpected. The cause is not immediately known.
User Response: If the problem persists, see problem determination information on the WebSphere Application Server Support page at http://www.ibm.com/software/webservers/appserv/was/support/.

WSVR0105E: Both type, {0}, or class, {1}, are defined in {2} at line {3}
Explanation: This exception is unexpected. The cause is not immediately known.
User Response: If the problem persists, see problem determination information on the WebSphere Application Server Support page at http://www.ibm.com/software/webservers/appserv/was/support/.

WSVR0106E: Invalid startup value {0} at line {1}
Explanation: This exception is unexpected. The cause is not immediately known.
User Response: If the problem persists, see problem determination information on the WebSphere Application Server Support page at http://www.ibm.com/software/webservers/appserv/was/support/.

WSVR0107W: Duplicate component, {0}, in file {1}
Explanation: This exception is unexpected. The cause is not immediately known.
User Response: If the problem persists, see problem determination information on the WebSphere Application Server Support page at http://www.ibm.com/software/webservers/appserv/was/support/.

WSVR0120E: An error occurred processing {0} {1}
Explanation: This exception is unexpected. The cause is not immediately known.
User Response: If the problem persists, see problem determination information on the WebSphere Application Server Support page at http://www.ibm.com/software/webservers/appserv/was/support/.

WSVR0150E: Missing entry for {0} in {1}
Explanation: This exception is unexpected. The cause is not immediately known.
User Response: If the problem persists, see problem determination information on the WebSphere Application Server Support page at http://www.ibm.com/software/webservers/appserv/was/support/.

WSVR0200I: Starting application: {0}
Explanation: This exception is unexpected. The cause is not immediately known.
User Response: If the problem persists, see problem determination information on the WebSphere Application Server Support page at http://www.ibm.com/software/webservers/appserv/was/support/.

WSVR0201E: Application, {0}, failed to initialize {1}
Explanation: This exception is unexpected. The cause is not immediately known.
User Response: If the problem persists, see problem determination information on the WebSphere Application Server Support page at http://www.ibm.com/software/webservers/appserv/was/support/.

WSVR0202E: Application, {0}, failed to start {1}
Explanation: This exception is unexpected. The cause is not immediately known.
User Response: If the problem persists, see problem determination information on the WebSphere Application Server Support page at http://www.ibm.com/software/webservers/appserv/was/support/.

WSVR0205E: Module, {0}, of application, {1}, failed to initialize
Explanation: This exception is unexpected. The cause is not immediately known.
User Response: If the problem persists, see problem determination information on the WebSphere Application Server Support page at http://www.ibm.com/software/webservers/appserv/was/support/.

WSVR0206E: Module, {0}, of application, {1}, failed to start
Explanation: This exception is unexpected. The cause is not immediately known.
User Response: If the problem persists, see problem determination information on the WebSphere Application Server Support page at http://www.ibm.com/software/webservers/appserv/was/support/.

WSVR0207I: Preparing to start EJB jar: {0}
Explanation: Preparation includes reading deployment descriptors and loading classes.
User Response: No action is required for this status message.

WSVR0208E: Unable to prepare EJB jar: {0} {1}
Explanation: An EJB jar can fail preparation due to incorrect deployment descriptors.
User Response: Look for messages that appear between this message and the preceeding WSVR0207I message. If you find one, it may be related to the cause of this message. If none is found, use the exception that appears as part of this message as a possible cause of this message.

WSVR0209E: Unable to prepare EJB jar {0}, enterprise bean {1} {2}
Explanation: An EJB can fail preparation if the container required classes have not been generated for the EJB.
User Response: Verify the EJB jar that contains the failed EJB {1} has been deployed.

WSVR0210W: No modules defined for application, {0}, on server, {1}
Explanation: This exception is unexpected. The cause is not immediately known.
User Response: If the problem persists, see problem determination information on the WebSphere Application Server Support page at http://www.ibm.com/software/webservers/appserv/was/support/.

WSVR0211W: Duplicate library, {0}, defined in {1}
Explanation: This exception is unexpected. The cause is not immediately known.
User Response: If the problem persists, see problem determination information on the WebSphere Application Server Support page at http://www.ibm.com/software/webservers/appserv/was/support/.

WSVR0212W: Library, {0}, defined in {1} does not exist
Explanation: This exception is unexpected. The cause is not immediately known.
User Response: If the problem persists, see problem determination information on the WebSphere Application Server Support page at http://www.ibm.com/software/webservers/appserv/was/support/.

WSVR0213W: Classpath entry, {0}, in library, {1}, located at {2} has an invalid variable
Explanation: This exception is unexpected. The cause is not immediately known.
User Response: If the problem persists, see problem determination information on the WebSphere Application Server Support page at http://www.ibm.com/software/webservers/appserv/was/support/.

WSVR0214W: Application, {0}, already installed
Explanation: This exception is unexpected. The cause is not immediately known.
User Response: If the problem persists, see problem determination information on the WebSphere Application Server Support page at http://www.ibm.com/software/webservers/appserv/was/support/.

WSVR0215W: Starting application, {0}, failed. The application is not installed.
Explanation: This exception is unexpected. The cause is not immediately known.
User Response: If the problem persists, see problem determination information on the WebSphere Application Server Support page at http://www.ibm.com/software/webservers/appserv/was/support/.

WSVR0216W: Stopping application, {0}, failed. The application is not started.
Explanation: This exception is unexpected. The cause is not immediately known.
User Response: If the problem persists, see problem determination information on the WebSphere Application Server Support page at http://www.ibm.com/software/webservers/appserv/was/support/.

WSVR0217I: Stopping application: {0}
Explanation: This exception is unexpected. The cause is not immediately known.
User Response: If the problem persists, see problem determination information on the WebSphere Application Server Support page at http://www.ibm.com/software/webservers/appserv/was/support/.

WSVR0218W: No modules defined for application, {0}, on server, {1}, in cluster, {2}
Explanation: This exception is unexpected. The cause is not immediately known.
User Response: If the problem persists, see problem determination information on the WebSphere Application Server Support page at http://www.ibm.com/software/webservers/appserv/was/support/.

WSVR0219I: Application, {0}, is disabled
Explanation: This exception is unexpected. The cause is not immediately known.
User Response: If the problem persists, see problem determination information on the WebSphere Application Server Support page at http://www.ibm.com/software/webservers/appserv/was/support/.

WSVR0220I: Application stopped: {0}
Explanation: This exception is unexpected. The cause is not immediately known.
User Response: If the problem persists, see problem determination information on the WebSphere Application Server Support page at http://www.ibm.com/software/webservers/appserv/was/support/.

WSVR0221I: Application started: {0}
Explanation: This exception is unexpected. The cause is not immediately known.
User Response: If the problem persists, see problem determination information on the WebSphere Application Server Support page at http://www.ibm.com/software/webservers/appserv/was/support/.

WSVR0230E: Invalid uri format encountered while processing cross document link: {0}
Explanation: This exception is unexpected. The cause is not immediately known.
User Response: If the problem persists, see problem determination information on the WebSphere Application Server Support page at http://www.ibm.com/software/webservers/appserv/was/support/.

WSVR0231E: Unrecognized resource type encountered during Application startup: {0}
Explanation: This exception is unexpected. The cause is not immediately known.
User Response: If the problem persists, see problem determination information on the WebSphere Application Server Support page at http://www.ibm.com/software/webservers/appserv/was/support/.

WSVR0232E: Unable to resolve cross document link identified by the uri: {0}, and referenced by document {1}
Explanation: This exception is unexpected. The cause is not immediately known.
User Response: If the problem persists, see problem determination information on the WebSphere Application Server Support page at http://www.ibm.com/software/webservers/appserv/was/support/.

WSVR0300I: Problems found in {0}
Explanation: Parse errors or warnings were found.
User Response: Fix the errors and warnings.

WSVR0301W: Invalid value type, {0}, expecting {1} at line {2}
Explanation: The type specified in the XML file was not expected.
User Response: Fix the XML file such that the appropriate type is used.

WSVR0302W: Invalid value, {0}, at line {1}
Explanation: The value specified was not valid.
User Response: Change the value to valid value.

WSVR0303W: Invalid element tagname, {0}, at line {1}
Explanation: There is no implementation class for the tag.
User Response: Contact IBM Support

WSVR0304E: Unsupported encoding, {0}
Explanation: The file encoding is not supported
User Response: Using an encoding that is supported by Java.

WSVR0305W: Invalid attribute, {0}, at line {1}
Explanation: The attribute is not valid.
User Response: Remove the attribute.

WSVR0306E: Unsupported XMI version
Explanation: The XMI version is not supported
User Response: Update the file to XMI 2.0

WSVR0307W: Invalid namespace, {0}, at line {1}
Explanation: The namespace is not valid.
User Response: Contact IBM Support

WSVR0308W: Unknown package, {0}, at line {1}
Explanation: The package is not valid.
User Response: Contact IBM Support

WSVR0309E: No packages have been registered
Explanation: No packages are registered
User Response: Contact IBM Support

WSVR0310W: Unable to resolve reference for, {0}, at line {1}
Explanation: The reference could not be resolved.
User Response: Contact IBM Support

WSVR0311W: Unknown exception {0}
Explanation: An unexpected problem occurred.
User Response: Contact IBM Support

WSVR0312E: Unknown exception {0}
Explanation: An unexpected problem occurred.
User Response: Contact IBM Support

WSVR0313E: The Message Driven Bean listener service could not be started, message driven beans will not be able to receive messages.
Explanation: The message listener service may be disabled.
User Response: Verify the message listener service is enabled.

WSVR0313E: The Message Driven Bean listener service could not be started, message driven beans will not be able to receive messages.
Explanation: The message listener service may be disabled.
User Response: Verify the message listener service is enabled.

WSVR0314E: Failed to parse {0} at line {1}, column {2} {3}
Explanation: The XML file does not have a valid XML structure
User Response: Correct the XML file.

WSVR0400W: Unable to register the {0} MBean {1}
Explanation: This exception is unexpected. The cause is not immediately known.
User Response: If the problem persists, see problem determination information on the WebSphere Application Server Support page at http://www.ibm.com/software/webservers/appserv/was/support/.

WSVR0401W: Unable to deregister the {0} MBean {1}
Explanation: This exception is unexpected. The cause is not immediately known.
User Response: If the problem persists, see problem determination information on the WebSphere Application Server Support page at http://www.ibm.com/software/webservers/appserv/was/support/.

WSVR0402W: Invalid MBean name {0} {1}
Explanation: This exception is unexpected. The cause is not immediately known.
User Response: If the problem persists, see problem determination information on the WebSphere Application Server Support page at http://www.ibm.com/software/webservers/appserv/was/support/.

WSVR0500E: Unable to parse {0} at line {1}, column {3} {4}
Explanation: This exception is unexpected. The cause is not immediately known.
User Response: If the problem persists, see problem determination information on the WebSphere Application Server Support page at http://www.ibm.com/software/webservers/appserv/was/support/.

WSVR0501E: Error creating component {0} {1}
Explanation: This exception is unexpected. The cause is not immediately known.
User Response: If the problem persists, see problem determination information on the WebSphere Application Server Support page at http://www.ibm.com/software/webservers/appserv/was/support/.

WSVR0600W: No thread context
Explanation: This exception is unexpected. The cause is not immediately known.
User Response: If the problem persists, see problem determination information on the WebSphere Application Server Support page at http://www.ibm.com/software/webservers/appserv/was/support/.

WSVR0601W: javaURLContext object missing for J2EEName {0}, caught exception {1}
Explanation: This exception is unexpected. The cause is not immediately known.
User Response: If the problem persists, see problem determination information on the WebSphere Application Server Support page at http://www.ibm.com/software/webservers/appserv/was/support/.

WSVR0602W: Attempt to access javaNameSpace from a ComponentMetaData that does not support a javaNameSpace.
Explanation: Only Web-Components and EJB-Components support access to the javaNameSpace.
User Response: If the problem persists, see problem determination information on the WebSphere Application Server Support page at http://www.ibm.com/software/webservers/appserv/was/support/.

WSVR0603E: ComponentMetaDataAccessor beginContext method received a NULL ComponentMetaData.
Explanation: This exception is unexpected. The cause is not immediately known.
User Response: If the problem persists, see problem determination information on the WebSphere Application Server Support page at http://www.ibm.com/software/webservers/appserv/was/support/.

WSVR0604I: Attempt to register EJBContainer MBean: caught exception {0}
Explanation: This exception is unexpected. The cause is not immediately known.
User Response: If the problem persists, see problem determination information on the WebSphere Application Server Support page at http://www.ibm.com/software/webservers/appserv/was/support/.

WSVR0605W: Thread “{0}” ({1}) has been active for {2} milliseconds and may be hung. There are {3} threads in total in the server that may be hung.
Explanation: A thread has been active for an extended period. This may indicate that the thread is hung, including deadlock and infinite loop situations.
User Response: If the problem persists, see problem determination information on the WebSphere Application Server Support page at http://www.ibm.com/software/webservers/appserv/was/support/.

WSVR0606W: Thread “{0}” ({1}) was previously reported to be hung but has completed. It was active for approximately {2} milliseconds. There are {3} threads in total in the server that still may be hung.
Explanation: A thread that was previously reported as hung has now completed.
User Response: If the problem persists, see problem determination information on the WebSphere Application Server Support page at http://www.ibm.com/software/webservers/appserv/was/support/.

WSVR0607W: Too many thread hangs have been falsely reported. The hang threshold is now being set to {0} seconds.
Explanation: This exception is unexpected. The cause is not immediately known.
User Response: If the problem persists, see problem determination information on the WebSphere Application Server Support page at http://www.ibm.com/software/webservers/appserv/was/support/.

WSVR0608I: WebSphere process class preloading is enabled using {0}.
Explanation: This is an informational message.
User Response: This is an informational message.

WSVR0609I: WebSphere process class preloading is disabled.
Explanation: This is an informational message.
User Response: This is an informational message.

WSVR0610I: WebSphere process class preloading is generating a preload file.
Explanation: WebSphere process class preloading is generating a preload file. The process startup time may take longer than normal. This will happen the first time a process is started or if a change is detected that requires the file to be regenerated.
User Response: This is an informational message.

WSVR0611E: WebSphere process class preloading could not find or create a preload file.
Explanation: The WebSphere class preloader could not find an existing preload file or was unable to create a new preload file. Class preloading is disabled for this process.
User Response: Verify that the WebSphere process has write authority to the was.install.root/logs/preload or the user.install.root/logs/preload directories and try again.

WSVR0612E: WebSphere process class preloading could not find or create {0}.
Explanation: The WebSphere class preloader could not find or create the specified preload file. Class preloading is disabled for this process.
User Response: Verify that the WebSphere process has write authority to create the specified file and try again.

WSVR0613E: WebSphere process class preloading could not write to the preload file.
Explanation: The WebSphere class preloader could not write to the preload file.
User Response: Verify that the WebSphere process has write authority to the preload file and try again.

WSVR0621E: CMP Bean “{0}” is configured to use a CMP Connection Factory JNDI name of “{1}” resource. This resource does not exist.
Explanation: This error indicates that a CMP which is configured to use a Connection Factory resource is not available. The CMP bean will not function because the resource is not defined by the administrator.
User Response: Create this Connection Factory by ensuring this data source is selected for CMP use in the administrative console.

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14 May

SCRUM: Artifacts

Product Backlog

The product backlog is a document that contains the list of all desired work on the project. All these entries have an overall description, priority based on business value and rough estimates specified. This document is owned by the Product Owner and he/she sets the business value for each item. While the team is responsible for updating the development estimates in the document. This document is re-prioritized at the start of each and every sprint.

Sprint Backlog

Sprint Backlog is a team document that is used to plan how the features will be implemented. In this document the team breaks the features into tasks. Normally these tasks are four to sixteen hours of work. If the task has an associated effort of more than 16 hrs it is broken down into a small task. The tasks are never assigned, the team member voluntarily choose the tasks as per the priority and their skills. The Sprint Backlog is owned by the team. The overall outcome of this document can be visualized as a TO DO arranged according to the business value.

Sample Sprint Backlog

Burn down

The Burn Down chart is used to display the pending work in the sprint backlog. The burn down chart provides the visual representation of the overall progress of the Sprint. This is updated daily and is visible to the world.


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13 May

SCRUM: All the different Meetings

Saturday Scrum Sprint 03
Image by alandd via Flickr

Sprint Planning Meeting

  • Planning must be done at the beginning of every sprint cycle.
  • Team selects items from the product backlog they can commit to completing
  • Sprint backlog is created by the entire team.
  • Tasks are identified and each is estimated (1-16 hours)
  • Collaboratively, not done alone by the ScrumMaster
  • An Eight hour limit applies to this meeting. During the 1st 4 hrs The Product owner and team prioritizes the product backlog and later only team plans the sprint and creates the Sprint Backlog.
  • Time limit: 8 hrs

Daily Scrum (Daily Standup) Meeting

Daily Scrum is more like a daily project status meeting which is very short and nothing other than the status can be discussed. The following are the key characteristics of Scrum.

  • Daily and starts precisely on time.
  • Daily Scrum must happen at same location and every working day at same time
  • Only Scrum Master and Team members can speak (anyone can join)
  • Not for problem solving (no discussions on reasons/approach etc.)
  • Everyone answers 3 questions and the Scrum Master documents this:
    • What have you done since yesterday?
    • What are you planning to do today?
    • Anything in the way (issues/concerns). The resolution cannot be discussed in the Scrum. It should be discussed after.
  • Time limit: 15-minutes

The Sprint Review Meeting

  • Outcome of the sprint is reviewed. What is completed and what is left.
  • A demo is provided of the completed work only.
  • Team and anyone from outside can participate (Open House)
  • Time limit: 4 hours.

Sprint Retrospective Meeting

  • This meeting is for identifying and implementing continuous process improvements
  • Two questions are asked:
    • What went well in the Sprint?
    • What could be improved in next Sprint?
  • The outcome is what to Start / Stop / Continue.
  • This is attended by team, ScrumMaster and Product Owner.
  • Time limit: 3 hrs
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