Troubleshooting

Failing to use the configured plugin

If you see something like this, where the driver is not available:

 Unable to create a ConnectionFactory for 'ConnectionFactoryOptions{options={...}}'. Available drivers: [ pool ]

It is likely because you are building a shaded jar with all dependencies and the ´META-INF/services` entry for the R2DBC driver for the database you are using got lost.

If using maven shading plugin, make sure to use the ServicesResourceTransformer.

For other build tools, make sure the tool merges META-INF/services/io.r2dbc.spi.ConnectionFactoryProvider files rather than dropping one when there is a conflict.