On 8 Sep 2017, at 10:23am, Karthi M <mkarth...@gmail.com> wrote:

>    Thanks for the Reply..
>    "Internally SQLite uses locks to serialize calls by multiple threads."
> if this is case then how can we achieve concurrency?
>    we are using 50 threads and 1500 time it is called for 30min.

When making a change (COMMIT) SQLite locks the entire database.  But not for 
very long.  Perhaps a few milliseconds.  If all 50 threads are trying to write 
at the same time you may have problems.  If just a few of them write each 
minute then you should be okay.

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