Atomikos warnings during application startup

[Jothianand]

We have recently integrated atomikos (4.0.6) with our spring boot rest api. We have 3 different datasources and have configured separate datasource beans for them.

Application is starting up successfully and we are able to perform all operations without any issues. But during startup we are seeing below warnings and we couldn't identify the root causes. Need help in resolving the same.

1. WARN - AtomikosDataSoureBean 'applicationXaDataSource': poolsize equals default - this may cause
2. WARN - Attempt to create a transaction with a timeout that exceeds maximum - truncating to: 30000
3. WARN - Cannot call method 'rollback' while a global transaction is running [changelog)
4. WARN - Error rolling back after precondition check liquibase exception. DatabaseException: liquibase.exception.DatabaseException: com.atomikos.jdbc.AtomikosSQLException: Cannot call method 'rollback' while a global transaction is running.

Thanks.