When LOB objects are stored in the database (using the experimental setting h2.lobInDatabase), and using the MVCC mode, opening a database with uncommitted transactions could throw a NullPointerException.

    that a full table scan is faster.

The built-in connection pool (JdbcConnectionPool) did not always honor the login timeout (the timeout could occur much too early).

Data modifications (inserts, updates, and deletes) are now faster for existing tables because converting objects to byte arrays is avoided if possible.

The cache was not used efficiently when reading (behaving like a FIFO cache instead of an LRU cache).