No data displayed in DPA charts

11/2/2018 3:58 PM

11/2/2018 3:58 PM

Charts in DPA do not display trend data. This may happen if you are in a time zone with recent changes related to daylight savings. This causes the data in the Java Runtime Envorinment (JRE) and the Joda-Time library to be outdated.

Database Performance Analyzer

The data in the database does not match the expected calculated beginning of the day.

DPA uses the Joda-Time library for managing date and time. It is best to keep the time zone (TZ) data updated to the same version in the Joda-Time library as the JRE used to run the DPA.

For information about TZ data changes, see this article from Oracle. (© 2017 Oracle and/or its affiliates, available at http://www.oracle.com, obtained on September 28, 2017)

Only update the TZ data if you are experiencing an issue as described above.

Update Joda-Time and JRE to the latest TZ data 

1. Update the TZ data in the Joda-Time library.
   • Follow the instructions on the Joda-Time site. (© 2017 Joda.org, available at http://www.joda.org, obtained on September 28, 2017)
   • You can use a Joda-Time version up to 2.9.7 with DPA.
2. Stop DPA.
3. Navigate to \DPA_installation_folder\iwc\tomcat\webapps\WEB-INF\lib\.
4. Replace the existing joda-time-2.x.jar file with the one you updated in the first step.
5. Update the TZ data in the JRE.
   • Follow the instructions in this article from Oracle (© 2017 Oracle and/or its affiliates, available at http://www.oracle.com, obtained on September 28, 2017).
   • Make sure you run the tool with the same JRE that is used to run DPA.
6. Start DPA.

Update only the Joda-Time library 

This is a quick fix for DPA versions 10.2.x.

1. Update the Joda-Time library to version 2.9.1.
   • Download from the Joda-Time GitHub repository (© 2017 Joda.org, available at http://www.joda.org, obtained on September 28, 2017).
   • This contains the same TZ data as the JRE embedded in DPA (TZ data version 2015g, not the latest version).
2. Stop DPA.
3. Navigate to \DPA_installation_folder\iwc\tomcat\webapps\WEB-INF\lib\.
4. Replace the existing joda-time-2.x.jar file with the one you downloaded in the first step.
5. Start DPA.

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