You can monitor and manage the performance of Lifecycle Query Engine 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.
Monitoring Lifecycle Query Engine performance Lifecycle Query Engine (LQE), you can quickly assess the overall status by viewing information in various widgets on the home page. You can view the high-level status of data providers, nodes, the query service, and backups. If issues need to be addressed, such as errors with data providers, you can click to see the details and take the appropriate actions.Improving Lifecycle Query Engine performance Lifecycle Query Engine node configurations. In these situations, you can review and update several advanced properties.Improving the Lifecycle Query Engine performance by compacting indexed data Improving the responsiveness of Lifecycle Query Engine queries Lifecycle Query Engine and the responsiveness of queries by defining properties on the Query Service page. For example, you can define limits for running queries, enable query caching, enable load shedding, or block long-running queries.Analyzing Lifecycle Query Engine server statistics Lifecycle Query Engine provides detailed statistics that you can use to analyze the performance of the server and queries. You can use this information to identify performance issues and take corrective actions, or to make decisions about improvements.Managing Lifecycle Query Engine nodes Lifecycle Query Engine across several nodes, you can use the LQE Nodes page to view the status and performance details for each node, or to modify the configuration for a specific node.Distributing query workload by deploying multiple Lifecycle Query Engine servers Lifecycle Query Engine instances across a set of servers, you can distribute the query workload and improve performance and scalability. Each Lifecycle Query Engine instance requires its own relational database and contains its own independent triple store index, which indexes the tracked resource set (TRS) data providers that you specify on the Lifecycle Query Engine administration page. Configure each Lifecycle Query Engine instance to index the same set of data providers. Setting up load balancing for multiple Lifecycle Query Engines How Lifecycle Query Engine uses licenses Lifecycle Query Engine connects to tracked resource set (TRS) feeds to index data from the connected data providers (TRS providers). Managing Lifecycle Query Engine vocabularies Lifecycle Query Engine uses to build SPARQL queries. You can add vocabularies, view the elements of vocabularies, or update the namespace, name, or prefix for a selected vocabulary.Backing up and restoring Lifecycle Query Engine and Link Index Provider 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.Configuring Lifecycle Query Engine and connecting to external databases by using properties files Lifecycle Query Engine or to connect to an external database. Lifecycle Query Engine comes with templates of the lqe.releaseconfig.properties file and the dbconnection.properties file that you can use to create your own files.Lifecycle Query Engine configuration properties Lifecycle Query Engine operates by using the properties in the Lifecycle Query Engine Administration pages or release configuration (lqe.releaseconfig.properties ) file.Configuring Lifecycle Query Engine with Jena or Link Index Provider with Jena for improving performance and scalability 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.Changing the database password Resolving data spill by removing sensitive data from Lifecycle Query Engine and the Link Index Provider IBM® Engineering Lifecycle Management application that is registered with Lifecycle Query Engine , the change is indexed by Lifecycle Query Engine automatically. To immediately index the deletion, complete this procedure. If you are using the Link Index Provider to manage configurations, follow the same steps on the LDX administration page.