Turboimage Database Enhancements - August 2001

Options for Runtime Control Block
• Copying DBUX and DBU
• Sharing DBUX and DBU
•Pros for Copying
- Separate current record pointers
- Distinct XM related data structures
- ‘accessor entry’ in DBG matches with no. of DBU
- Separate DBU trailer area
- Same process termination procedure
•Cons for Copying
- Time consuming to duplicate DBUs
- May have space problem in SR5 for threads
- May conflict the “inherit” concept