ExecuteBatch commits even if autocommit is false ?

Hello !
Is it true that executeBatch (e.g on PreparedStatement) commits
the changes after running ? We tried using a temporary table
with on "commit delete rows" and fill this table with
executeBatch().
The following Statements seem to find this table empty.
Using normal tables or on commit preserve rows works.
OF course autocommit is false and the temporary table is used
on the same connection.
If it is true, does this violate the jdbc-spec ?
Tested with 8.1.7 Database on sparc and the classes12.zip from
9.0.1
Thanks

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