1. Jan 27, 2003D0 Trigger Db Status1 Trigger Database Status Elizabeth Gallas – FNAL CD Trigger Working Page http://www- d0.fnal.gov/~gallas/d0_private/trig/trigger.html D0 Databases Meeting January 27, 2003

2. Jan 27, 2003D0 Trigger Db Status2 Outline Database corruption –Cause, Recovery, Plans Need help from D0Db Support –Speeding up TDB Views Diana and Elizabeth –TriggerDbServer Exception Handling Steve, Jeremy, Elizabeth Top priority tasks

3. Jan 27, 2003D0 Trigger Db Status3 Trigger Database Corruption Data Corruption –Whenever a STATUS or STREAM was updated using the STATUS menu, element descriptions containing were updated to contain only the characters proceeding the Cause: –Bug: Web form text box rather than text area box –a bug fix by E in Jan 2002 to make this form useable. –Root: This interface was quickly put together and has many features that –make data corruption of this type very difficult to detect. –Make this interface difficult to use Data Recovery –E’s backups – not good because Typically done after STATUS flags set –Can we use RMAN backups? For all trigger elements: –Update to use the element description which is the last date it had stat_curr=“local” unless a later (modify_date) description has a longer length

4. Jan 27, 2003D0 Trigger Db Status4 Fix the Entry programs: More details in email message. All changes are to existing methods. DB: 7 columns to TL_MAPS table: –(2) needed for correct (robust) implementation of streaming –(5) include “L2 forced unbiased” and other similar programming needed online ASAP Trigger Db Server (*TTriggerList): –Remove redundant methods which were added for the streaming ‘test’ –Add the 7 new columns to TL struct, GIUD methods –Check all columns for special characters (bug fix) STATUS Entry interface –Use textarea box –Update the record retrieved from the database, not from the back of the form –When the SafeUpdate is successful, report the old/new STAT_CURR, STREAM or Description for the column(s) that changed Trigger List Entry –Modify to have options to enter the 7 new columns by trigger list or by trigger using updated server methods for trigger list. Streaming Report Interface

5. Jan 27, 2003D0 Trigger Db Status5 Need help from D0Db Support Recovery of lost data (Jeremy/??) Trigger Db Server (Steve/Jeremy) –Exception handler bug Does not return database exceptions DONE TODAY  v2_2_1 db_server_base View Performance (Diana) –Trigger database views are slow –Many views used to generate the standard Trigger List Report (TLR) This is report done most often –Elizabeth looked at TLRViews Removed where ever possible: –Case insensitivity –Use of like when ‘=‘ can be used Sent resulting example views to d0db support –Any progress ? –Next views to evaluate are the ones used by the xml generator

6. Jan 27, 2003D0 Trigger Db Status6 Needed right away (Jan03) Jeremy / Adam: –Get streaming into a production mode No NEW methods (changes to existing methods). Changes are well defined. Jeremy / Elizabeth –Level 2 preprocessor entry complete –Change L2 Term entry to add L2PP Elizabeth: –Database queries for getting trigger cross sections as a function of time –xml generator changes L2 Calorimeter (extended eta) L2 forced unbiased (etc) programming L2 preprocessor programming –Python v 2 fixes (still not done) and integrating common routines in Entry and Report Interfaces in order to write L2 Preprocessor report interface –Propagation of STAT_CURR flags New Server method –Transformation program upgrade: L2 Terms, L2 Preprocessors, L3 Terms