h2 (embedded mode ) database files problem

Question

There is a h2-database file in my src directory (Java, Eclipse): h2test.db

The problem:

• starting the h2.jar from the command line (and thus the h2 b

Answer 1

For embedded mode, you'll need to check the path. For example, use a path relative to your home directory:

"jdbc:h2:file:~/db/h2test.db"

To be sure, use a full path:

"jdbc:h2:file:/users/aeter/db/h2test.db"

For convenience, append ;IFEXISTS=TRUE to avoid creating spurious database files.

See Connecting to a Database using JDBC for more.

H2 Server URLs are relative to the -baseDir specified as a parameter to main().

Answer 2

Also you can like this

"jdbc:h2:file:db/h2test.db"

then java looks db folder from project folder

->projectName // project folder
-->src        // src folder
-->db         // here your database folder
-->....

Answer 3

If you are using Hibernate try this in hibernate.cfg.xml file:

<property name="connection.url">jdbc:h2:file:db/h2test</property>

without *.db extension at the end

Answer 4

Also there can be a problem if you use some special parameters in your JDBC url, the database file name can differ for various cases.

In my case, I had two URLs:

• jdbc:h2:~/XXX;MVCC=FALSE;MV_STORE=FALSE
• jdbc:h2:~/XXX

This first case created XXX.h2.db file, the second one XXX.mv.db, beware.