HsqlException: ошибка получения блокировки базы данных: причина: java.io.FileNotFoundException: /data/explorecalifornia. ⇐ JAVA

[Anonymous]

Я пытаюсь подключиться к HSQL с помощью Java. Я использую учебник для работы с JDBC и спящим режимом. Это уроки Линды. В любом случае, вот код ниже:

Код: Выделить всё

package com.lynda.javatraining.db;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;

public class Main {

private static final String USERNAME = "dbuser";
private static final String PASSWORD = "dbpassword";
private static final String CONN_STRING =
"jdbc:hsqldb://data/explorecalifornia";

public static void main(String[] args) throws SQLException {

//Class.forName("com.mysql.jdbc.Driver");

Connection conn = null;
System.out.println("A");
System.out.println(conn == null);
System.out.println(CONN_STRING);
try {
System.out.println("B1");
conn = DriverManager.getConnection(CONN_STRING, USERNAME, PASSWORD);
System.out.println("B1-2");
System.out.println("Connected!");
} catch (SQLException e) {
System.out.println("B2");
System.err.println(e);
} finally {
System.out.println("B3");
if (conn != null) {
conn.close();
}
}
System.out.println("C");

}

}

Вот какая ошибка:

Код: Выделить всё

A
true
jdbc:hsqldb://data/explorecalifornia
B1
2014-06-27T15:26:27.430-0400  SEVERE  could not reopen database
org.hsqldb.HsqlException: Database lock acquisition failure: lockFile: org.hsqldb.persist.LockFile@76d682a[file =/data/explorecalifornia.lck, exists=false, locked=false, valid=false, ] method: openRAF reason: java.io.FileNotFoundException: /data/explorecalifornia.lck (No such file or directory)
at org.hsqldb.error.Error.error(Unknown Source)
at org.hsqldb.error.Error.error(Unknown Source)
at org.hsqldb.persist.LockFile.newLockFileLock(Unknown Source)
at org.hsqldb.persist.Logger.acquireLock(Unknown Source)
at org.hsqldb.persist.Logger.openPersistence(Unknown Source)
at org.hsqldb.Database.reopen(Unknown Source)
at org.hsqldb.Database.open(Unknown Source)
at org.hsqldb.DatabaseManager.getDatabase(Unknown Source)
at org.hsqldb.DatabaseManager.newSession(Unknown Source)
at org.hsqldb.jdbc.JDBCConnection.(Unknown Source)
at org.hsqldb.jdbc.JDBCDriver.getConnection(Unknown Source)
at org.hsqldb.jdbc.JDBCDriver.connect(Unknown Source)
at java.sql.DriverManager.getConnection(DriverManager.java:571)
at java.sql.DriverManager.getConnection(DriverManager.java:215)
at com.lynda.javatraining.db.Main.main(Main.java:24)

B2
java.sql.SQLException: Database lock acquisition failure: lockFile: org.hsqldb.persist.LockFile@76d682a[file =/data/explorecalifornia.lck, exists=false, locked=false, valid=false, ] method: openRAF reason: java.io.FileNotFoundException: /data/explorecalifornia.lck (No such file or directory)
B3
C

Может ли кто-нибудь сказать мне, что я делаю не так?

Подробнее здесь: https://stackoverflow.com/questions/244 ... notfoundex