Update on Database Issues Peter Chochula DCS Workshop, June 21, 2004 Colmar

Peter Chochula 9 th ALICE DCS Workshop, March 15, 2004 Geneva 2  This talk is an update of information presented during the previous DCS workshops  For more detailed overview of database activities in ALICE please see the talk presented by Latchezar Betev on Wednesday

Peter Chochula 9 th ALICE DCS Workshop, March 15, 2004 Geneva 3  DCS Configuration Database

Peter Chochula 9 th ALICE DCS Workshop, March 15, 2004 Geneva 4 Configuration Database – Reminder  Configuration data: System Static Configuration (e.g. which processes are running, managers, drivers etc.) Device Static Configuration (device structure, addresses, etc.) Device Dynamic Configuration – Recipe (device settings, archiving, alarm limits etc.) Alice add-on: FERO configuration, which is in fact also a device configuration – both dynamic and static

Peter Chochula 9 th ALICE DCS Workshop, March 15, 2004 Geneva 5 ALICE FERO Configuration will be shared between DAQ, DCS and ECS Configuration Database System Static Configuration Device Static Configuration Device Dynamic Configuration FERO Static Configuration Configuration DB PVSS-II & underlying software Hardware FERO Dynamic Configuration Common Solution (FW devices only) Alice Specific

Peter Chochula 9 th ALICE DCS Workshop, March 15, 2004 Geneva 6 Present Status  FERO configuration developments are ongoing (Svetozar Kapusta) MySQL prototype, PhP Web access Presently porting the database to ORACLE  A private Oracle Server installed in DCS lab  Framework configuration DB tools installed  We are evaluating the prototype version of framework configuration DB tools  We would like to encourage you to start using the tools and provide feedback (to us).

Peter Chochula 9 th ALICE DCS Workshop, March 15, 2004 Geneva 7 FW PVSS Configuration Prototype Implementation  Database access based on ADO both on Windows and Linux ETM provides sets of libraries enabling “quasi” ADO functionality on Linux  Underlying database system: Oracle The MySQL implementation is presently not available (developments are frozen).  Configuration database tool is now a part of framework distribution and is available for download on framework pages (

Peter Chochula 9 th ALICE DCS Workshop, March 15, 2004 Geneva 8 FW Configuration DB Prototype  Configuration DB integrated with DEN  Configuration DB implemented for framework devices  Our test setup is based on CAEN power supply

Peter Chochula 9 th ALICE DCS Workshop, March 15, 2004 Geneva 9 FW Configuration DB Prototype Configuration prototype handles both device static configuration and recipes

Peter Chochula 9 th ALICE DCS Workshop, March 15, 2004 Geneva 10 Example: Device configuration stored in ORACLE

Peter Chochula 9 th ALICE DCS Workshop, March 15, 2004 Geneva 11 Example: Configuration Db tables in Oracle

Peter Chochula 9 th ALICE DCS Workshop, March 15, 2004 Geneva 12  Performance and stability will be tested with large systems  Prototype setup is available to everyone wishing to perform tests ORACLE server maintained by DCS team Terminal service for developments of your own projects (projects can be hosted on our server and remotely accessed from your working place. This is handy if you just want to test the software before you install it on your computers)

Peter Chochula 9 th ALICE DCS Workshop, March 15, 2004 Geneva 13 Creating you own tables in ORACLE  At CERN there is central service available Users can register to obtain their tablespace on central servers  Development version installed in DCS Lab – everyone is welcome to use it, please note that this is not a production version yet  For your developments you can download Windows and Unix versions (full) of Oracle 9i server directly from This version is free for development purposes

Peter Chochula 9 th ALICE DCS Workshop, March 15, 2004 Geneva 14 FERO Configuration  The FED should be treated as standard device  JCOP framework tool will be modified to cover also ALICE FED We need to develop a generic API for accessing the FERO configuration as this is shared between DCS and DAQ  DCS team needs to know the structure of the configuration parameters for each FED Please provide feedback by the end of July We need also to know the mechanism for obtaining your configuration data

Peter Chochula 9 th ALICE DCS Workshop, March 15, 2004 Geneva 15  DCS Archive and Conditions Database

Peter Chochula 9 th ALICE DCS Workshop, March 15, 2004 Geneva 16 Reminder - DCS Archives Archive PVSS Archive Condition DB Present Model is based on PVSS –II archiving scheme Condition DB is an extension of the standard archiving and provides a simplified access to sub-set of data

Peter Chochula 9 th ALICE DCS Workshop, March 15, 2004 Geneva 17 Replacement of PVSS Archives with Oracle database PVSS Condition DB Archive ORACLE Database New archiving model will be introduced in PVSS-II v. 3 (but not in the coming release). PVSS-II archive will be implemented in ORACLE.

Peter Chochula 9 th ALICE DCS Workshop, March 15, 2004 Geneva 18 DCS data logging Present Status:  Release of new archiving mechanism in PVSS is scheduled for the end of August  Condition DB developments are presently “frozen” – waiting for performance tests of the new archiving  Heavy testing of performance will start in September  We need to develop generic API to DCS archive

Peter Chochula 9 th ALICE DCS Workshop, March 15, 2004 Geneva 19  It is necessary to make an estimate of the final system size  Information in URD’s is sometimes obsolete Present estimate (based on URD’s) assumes some parameters gathered from channels to be written into the archive This numbers are misleading as many detectors assume that FERO parameters will be monitored, which is probably (for mst parameters) not true  Please update your URD before the end of July and provide realistic estimate of monitored parameters.  This is a critical task and there is not much time left. Please, do not underestimate this problem

Peter Chochula 9 th ALICE DCS Workshop, March 15, 2004 Geneva 20 Conclusions  Encouraging progress in FW Configuration database developments Prototype available for evaluation  Archiving database will be released soon, we need to prepare for testing  You information is essential, we need to know the number of monitored parameters and typical updating frequencies  Both configuration and archiving must be operational for the pre-installation in 2005 In December we need to release first stable version of both configuration and archiving databases