B4J Question Best free Database for concurrent access

[Pedro Caldeira]

Hello All,
I am developing a multi side aplication that need to read/write to a database at the same time.
With sqlite, I keep geting a database locked error, even with the pragma set to WAL.

Is there a DB engine that is both free and that allow concurrent connections ?

Thanks

 

[MarkusR]

mysql community edition?
https://dev.mysql.com/downloads/

 

[EnriqueGonzalez]

MYSQL and MariaDB that may be are not free for commercial use
PostgreSQL - i do not know the licencing
and my personal favorite SQL Server Express. i like express it is free for commercial use and very powerful database.

 

[OliverA]

If you use SQLite in conjunction with jRDC2, you will have no locking contentions. A modded Version that supports SQLite can be found here https://www.b4x.com/android/forum/threads/modded-jrdc2-w-sqlite-support-and-more.85578/
Disclaimer: I’m the author of that mod