Setting DB auto commit

By default OpenAF opens all database connections in "autocommit=false" mode. But in some special cases you might need to turn it on. Let's see one of those cases:

Creating a PostgreSQL tablespace example

If you open a PostgreSQL connection and try to create a tablespace "TEMP" as you would usually do, this will happen:

> var db = new DB("jdbc:postgresql://some.host:5432/postgres", "adminUser", "adminPass");
> db.u("create tablespace temp location '/data'");
-- JavaException: org.postgresql.util.PSQLException: ERROR: CREATE TABLESPACE cannot run inside a transaction block

That's because PostgreSQL considers anything with "autocommit=false" to be a transaction block.

How to set auto commit to on?

To bypass this situation, on a dedicated DB connection, execute the following:

> var db = new DB("jdbc:postgresql://some.host:5432/postgres", "adminUser", "adminPass");
> db.getConnect().setAutoCommit(true);
> db.u("create tablespace temp location '/data'");
1

The getConnect method will return you the JDBC connection instance object which, among others, allows you to execute the setAutoCommit method. That's enough to then execute the "create tablespace" statement without being in a transaction block.