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; with the [[/Logger ODB tree]] : If the <span style="color: purple;">''/Logger''</span> ODB tree exists (i.e. has been created by [[mlogger]])

The current State of an experiment is available under the [[/Runinfo ODB tree]]. ...in progress, these Transition Codes will be found under the [[/Runinfo ODB tree]] for an experiment.

* [[/History ODB tree]] ...later playback through the midas history webpage. The [[Mlogger|midas data logger]] will automatically grab the current image from the webcam, and store it o

= Creating the <span style="color: purple; font-style:italic;">/Elog</span> tree = The {{Odbpath|path=/Elog}} tree is created automatically the first time the <span style="color: #444444; ba

* [[Keys in the ODB /Logger tree|/Logger ODB tree]] * [[Keys in the ODB /Logger/History subtree|/Logger/History subtree]]

* [[Keys in the ODB /Logger tree| /Logger tree]] * [[Keys in the ODB /Logger/SQL subtree |/Logger/SQL subtree]]

== Creating the /System tree == ...an> ODB tree is created automatically when the [[odbedit #Creating the ODB|ODB is first created]].

* [[/Experiment ODB tree]] * [[/Sequencer ODB tree]]

* [[/Alarms ODB tree]] The ODB /Programs tree contains user and system information related to client programs.

* [[Data Logger]] == Creating the /Lazy tree ==

...B location or to an external webpage. Created by user via the [[/Alias ODB tree]]. : MIDAS maintains buffers (i.e. [[#Shared Memory]]) for ODB, System Messages, Data, Alarms and History system information. These buffer

* [[File tree organization]] Distribution package [[hotlink_note|Note on the ODB hotlink function (db_open_record())]]

* [[/Experiment ODB tree]] [[/Runinfo ODB tree #Run number|run number]] of the upcoming run will be displayed for editing

...Resume depending on the run state) and the '''page switch buttons''' (e.g. ODB, Messages, Elog, Alarms, Programs, History, Sequencer, MSCB, Chat, Help). C ...ay customize these by '''hiding unneeded buttons'''. The [[/Experiment ODB tree#Menu Buttons|Menu Buttons]] key lists the buttons to appear on the page. By

== How to recover from a corrupted ODB == === Remove the old ODB and create an empty one with the new size ===

* [[ODB|Using the ODB]] * [[Online Database|ODB structure]]

...The initial values of many of the parameters in the ODB [[/Equipment ODB tree#Common subtree|/Equipment/''<equipment-name>''/Common subtree]] are taken f RO_RUNNING | RO_ODB // read when running and update ODB

* [[mhttpd]] ODB page * [[Online Database|ODB structure]]

* [[/History ODB tree]] * [[Keys in the ODB /Logger tree|/Logger ODB tree]]

== Creating the <span style="color: purple;">''/Experiment''</span> tree == ...ODB tree is created automatically when the '''[[odbedit #Creating the ODB|ODB is first created]]'''.