Database Architecture Networked DAN

1
Database Architecture Networked(DAN)

• January 29, 2003
• Stephen P. White CEPA/DBS

2
Goals

• Supply classes and functions to perform
  operations common to all database servers.
• Concurrent transactions
• Multithread ORB
• Cache support
• Memory Cache
• File Cache
• Remote Proxy
• Database reconnection
• Client Identification
• Statistical data collection (plan to leverage
  joint working project)

3
Status

• DAN has been in production as of October 2002.
• As of p13.0.4 general users are using the DAN
  based Calibration servers
• As of p13.0.8 (end of shutdown) the farm will use
  DAN based Calibration servers.
• Production SAM dbservers and sam_admin use DAN.

4
Node/Server Configuration

• Five linux nodes
• 2 nodes for Calibration servers
• Farms dbservers
• User dbservers
• 1 node for SAM servers
• 1 backup node
• 1 development node

5
Tasks

• Complete testing for Proxy servers and move to
  production high priority.
• Reduce the memory footprint of the Calibration
  dbservers.
• Investigate the threading lockup.
• New version of omniORB and omniORBpy?
• Display collected statistical data.
• Joint working project