So relative paths or paths that refer to the same directory on the same drive can be identical. While the “test” catalog is open, a test. At the time of the next startup, all such files will be renamed or deleted by the database engine. This feature is useful for running tests, where it may not be practical to shutdown the database after each test. There’s a newer version here: In some circumstances, a test. There are several other distinctive features.

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Chapter 1. Running and Using HyperSQL

The tools are used for interactive user access to databases, including creation of a database, inserting or modifying data, or querying the database. Otherwise with abnormal shutdown this file is used at the next startup to redo the changes.

A connection should be reused as much as possible and closed only when it is not going to be used again for a long while. HyperSQL has a wide range of enterprise deployment options, eclipsd as XA transactions, connection pooling data sources and remote authentication. The server can also act as a small general-purpose web server for static pages. The Servlet Mode cannot be started independently from the servlet engine.

After hsqldg, creation of connections and calls to JDBC methods of the connections execute as if they are part of the Java application that is making the calls. Those versions are numbered 2. This guide covers the database engine features, SQL syntax and different modes of operation. See the Properties chapter. Databases are not closed when the last connection to the database is explicitly closed via JDBC. All these objects belong to the connection that returned them and are closed when the connection is closed.


This command should be issued periodically, especially when lots of eclipsw, updates or deletes have been performed on the cached tables. When a tool is up and running, you can connect to a database may be a new database and use SQL commands to access and modify the data. ApplicationWindow If anyone has faced the same issue or knows how to resolve it.

If no username or password is specified, the default SA eeclipse and an empty password are used.

HSQLDB Tutorial

Main classes for the Hsqldb tools org. Both the username and password are case-sensitive. The catalog files are then saved in a form that can be opened quickly the next time the catalog is opened. There are three server modes, hsqlsb on the protocol used for communications between the client and server. If a mistake is made in specifying the path for connecting to an existing database, a connection is nevertheless established to a new database. Connection object that is returned to access the data.


As a result you cannot check the contents of the database with external tools such as Database Manager while your application is running. If you create an identical directory structure on the C: Post as a guest Name.

Installing and configuring HSQLDB Database

You can add the command line argument –help to get a list of available arguments for these tools. The following example of the command for starting the server starts the server with one default database with files named “mydb.

For most applications, in-process access is faster, as the data is not converted and sent over the network. Note When the engine closes the database at a shutdown, it creates temporary files with the extension. In-Process Access to Database Catalogs.

When a HyperSQL server is run, network access should be adequately protected. Copyright Fred Toussi. The public name hides the file names from users. These files should not be deleted by the user. Hsqlldb up using Email and Password.