Administering Lifecycle Query Engine with Jena
After installation, administrators can add and configure data sources and user access for
Lifecycle Query Engine with Jena. You can analyze server statistics, monitor and manage the
query performance, or troubleshoot problems.
Reducing downtime during Lifecycle Query Engine reindexing
When you reindex Lifecycle Query Engine , reports that run during the reindexing might not be accurate. Team members must run reports only after the reindexing is complete. To reduce this downtime while you reindex Lifecycle Query Engine , you can clone the Lifecycle Query Engine instance and reindex the clone. Team members can continue to run reports and historical trend data is still collected. After the clone is reindexed, you can merge the indexed data and resume by using the original Lifecycle Query Engine instance.
Moving data from Lifecycle Query Engine with Jena or Link Index Provider with Jena
The Lifecycle Query Engine with Jena or Link Index Provider with Jena data that is saved on the local file system consists of the index directories and several configuration files for the application. The index directories contain all the artifacts from the data source, merged artifacts, historical metrics that are created for trend reporting, and a version index that is used internally. The artifacts from the data sources are stored in the indexTdb directory and the historical metrics are stored in the historyTdb directory. Also, the merged artifact types are stored in the shapeTdb directory and the version information is stored in the versionTdb directory. If you do not have enough space for the indexed data on the drive where Lifecycle Query Engine with Jena or Link Index Provider with Jena is located, you can move the data to a new location on a different drive.
Lifecycle Query Engine admin query diagnostic tab functions
The subtabs on the Query tab in Lifecycle Query Engine can be used to test or troubleshoot unexpected report results.
Running Lifecycle Query Engine queries to test or debug
You can use SPARQL queries in Lifecycle Query Engine to test or troubleshoot unexpected report results. The SPARQL queries access the Lifecycle Query Engine data directly. The queries that you create cannot be stored in Lifecycle Query Engine .
Monitoring and managing the performance of Lifecycle Query Engine
You can monitor and manage the performance of Lifecycle Query Engine with Jena by viewing the status in the widgets on the administration home page, or on the Health Monitoring page, by configuring properties that impact the responsiveness of queries and server performance, and by responding early to issues that are identified.
Configuring Lifecycle Query Engine with Jena or Link Index Provider with Jena for improving performance and scalability
When you configure Lifecycle Query Engine with Jena or Link Index Provider with Jena, you can make deployment decisions and configuration choices to improve Lifecycle Query Engine with Jena or Link Index Provider with Jena performance and scalability.
Backing up and restoring Lifecycle Query Engine and Link Index Provider
You can back up and restore data that is indexed by Lifecycle Query Engine or Link Index Provider . The copy of the indexed data can be used in the future to restore Lifecycle Query Engine or LDX to a previous state.