ConEx: a system for monitoring queries

We present a system, ConEx, for monitoring query execution in a relational database management system. ConEx offers a unified view of query execution, providing continuous visual feedback on the progress of the query, and the status of operators in the query evaluation plan. It incorporates novel techniques to dynamically estimate important parameters affecting query progress efficiently. We describe the design and features of ConEx, and discuss its technology.

[1]  Surajit Chaudhuri,et al.  Estimating progress of execution for SQL queries , 2004, SIGMOD '04.

[2]  Jeffrey F. Naughton,et al.  Toward a progress indicator for database queries , 2004, SIGMOD '04.

[3]  Nick Koudas,et al.  A Lightweight Online Framework For Query Progress Indicators , 2007, 2007 IEEE 23rd International Conference on Data Engineering.

[4]  Jeffrey F. Naughton,et al.  Increasing the accuracy and coverage of SQL progress indicators , 2005, 21st International Conference on Data Engineering (ICDE'05).

[5]  Surajit Chaudhuri,et al.  When can we trust progress estimators for SQL queries? , 2005, SIGMOD '05.