1. Ralph Lange EPICS Seminar IHEP Beijing 2002
Oracle at BESSY
Ralph Lange EPICS Seminar IHEP Beijing 2002

2. Outline System Data Content Current Status Experiences Future Concept
Archiving
Tools
Hints

3. Some System Figures
Oracle 8.05 on HP-UX  in preparation: Oracle 8i on HP-UX 11
~ 250 tables (not optimized)
Data store takes ~ 3 Mbyte
Complete installation is ~ 3.5 Gbyte (including sources, web server etc.)

4. Data Contents Machine Parameters Geodesic data of all devices
Measured magnet conversion factors
Electronic runbook
Physical and electrical data of
Power supplies
Insertion devices
Magnets
EPICS configuration data
Administration data (names, phones, rooms)

5. Current Status – Import

6. Current Status – Export

7. Experiences and New Approach
Script Wars
The Chaos Strikes Back
The Return of the API Design
RDB should be only source of information
Generic structure to hold all EPICS configuration data
Granularity in Oracle down to EPICS database fields – no more templates
Structure contains hierarchy trees

8. Properties and Migration Status
Complicated structure (~ 25 tables) that is only accessible through tools
Once the toolset is in use, additional applications´ configurations are easy to add  Once it works, we won´t need it anymore?
Structure definition is stable
Generic tools are being created

9. Archiving
Current work: using Oracle as a backend for the Channel Archiver (instead of the proprietary binary file format)  BESSY (Thomas Birke)  SLAC (Lee-Ann Yasukawa, Bob Hall)
Will need Oracle 8i or later

10. Tools in Use at BESSY
Oracle development: Embacadero (ER/Studio) @ Windows TORA (Freeware) @ Win, Linux Oracle Tools
Web interface: PHP  Oracle Library
Parsers (creating config and EPICS db): Perl (and C?)  DBI module (Oracle Libs)

11. Hints Oracle Services (web based support database)
Metalink (available with Oracle license): bugs, patches, …
Technet (free): documentation, test software