Cannot change transaction read-only property in the middle of a transaction

Question

I am using BoneCP with Postgresql and Spring JdbcTemplate. When JdbcTemplate executes query and then tries to close the connection, it gets this exception:

Answer 1

I ran into the same issue and was able to solve it by doing these two steps:

• setting the isolation level by adding these statement: config.setDefaultTransactionIsolation("READ UNCOMMITTED");

• commit every transaction before closing.

I am not sure which one solved the problem or if both are necessary.

Answer 2

I ran into this issue today. You might be missing one of the required dependencies of boneCP.

I was missing SLF4J library, and receiving the same message. Check whether you have the dependencies here: http://jolbox.com/index.html?page=http://jolbox.com/requirements.html