Best practice on frequent updates 11g

I have some source tables I want to get updates from every 20 minutes. What is the best approach in ODI? The tables have several hundred thousand records in them. They do have a last_updated_date in them

ss396s wrote:
That as an option, but there are some sources where I may not be able to set that up.
I was thinking of keeping a last run date or last id in a table, adding a filter on the source with the variable....Anyone using methods like this?Yep - Grab the max last update date from a target table and hold it in a variable , use this variable as a filter in the interfaces to only grab the relevant rows.
Alternatively, use a control table to hold the date, at the end of the ETL run, update this control table using an ODI proc , write the variable value to the table and next run read this value into the variable to start the loop again.
HTH,
Alastair

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