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Logging large .ctl to citadel database is slow

Hi, All
 
I'm using LV 8.5  with DSC.
 
I'm logging my own.ctl types shared variables to citadel database. This own.ctl  includes 52 piece doubles, strings and boolean datatypes. I have 200 piece this tape of shared variables and I record all that shared variable information to citadel database. All operations as writing, reading, achieving, and deleting database are very slow. They also consume lot CPU time. Is there any capacity limits on citadel database ? Which is best structure to record this kind of data to database? I have tested (see attacment) structure but it seems to be very slow because I have to delete and create database trace references after 1st database is full.
 
BR,
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