/**
* If this is a Derby database, force a checkpoint so that the disk space occupied by the
* transaction log is freed as early as possible.
*/
private void checkpointDatabase(ConnectionResource conn) throws SQLException {
DatabaseMetaData dmd = conn.getMetaData();
if (procedureExists(dmd, "SYSCS_UTIL", "SYSCS_CHECKPOINT_DATABASE")) {
try (Statement s = conn.createStatement()) {
s.execute("CALL SYSCS_UTIL.SYSCS_CHECKPOINT_DATABASE()");
}
conn.commit();
}
}
@Override
public void initialize() throws HistoryException {
try {
connectionManager = new ConnectionManager(jdbcDriverClass, jdbcConnectionURL);
for (int i = 0; ; i++) {
final ConnectionResource conn = connectionManager.getConnectionResource();
try {
try (Statement stmt = conn.createStatement()) {
initDB(stmt);
}
conn.commit();
// Success! Break out of the loop.
return;
} catch (SQLException sqle) {
handleSQLException(sqle, i);
} finally {
connectionManager.releaseConnection(conn);
}
}
} catch (Exception e) {
throw new HistoryException(e);
}
}