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The Trafodion instance repository is a data warehouse for manageability data collected from a Trafodion instance. Each instance in a Trafodion cluster contains a repository schema ("_REPOS_") that hosts the repository tables. To retrieve data from the repository, DBAs or end users can query the repository tables directly using the Trafodion Command Interface (TrafCI) or any third-party tool like DbVisualizer or SQuirreL SQL Client. Performance metrics such as query information, statistics, and session information are stored in repository tables.