android - ORMLite : Out of memory Issue (loading over 30.000) -

I would like to get some help with my problem

A sensor via Bluetooth (Zephyr Bioharnes ).

Obtain values ​​and save (250 price / sec) for 2 minutes (demo purposes)

Store values ​​on the database with ORMLite.

Read all of them to create JSON ( queryForAll () ).

Application Crash.

In the future, it can save prices for 30 minutes, so this is a problem that we have to solve in an efficient manner.

My only thoughts are reading the values ​​by blocks, can I do this with ORMLite?

If you have a better solution, it will also be appreciated.

Thanks in advance.