Transaction Manager (or TP Monitor)

• May be part of OS, a layer of middleware, or part of the DBMS

• Main duties:

  • Starts transactions
    • locate and start the right program
    • ensure timely, fair scheduling
  • Logs their activities
    • especially start/stop, writes, commits, aborts
  • Detects or avoids conflicts
  • Takes recovery actions

Previous slide

Next slide

Back to first slide

View graphic version