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## com.sleepycat.je.util
Class DbDump

    java.lang.Object
      com.sleepycat.je.util.DbDump

    public class DbDump

extends Object

Dump the contents of a database.

To dump a database to a stream:

       DbDump dump = new DbDump(env, databaseName, outputStream, boolean);
       dump.dump();

Because a `DATA=END` marker is used to terminate the dump of each database, multiple databases can be dumped and loaded using a single stream. The `dump()` method leaves the stream positioned after the last line written and the `DbLoad.load()` method leaves the stream positioned after the last line read.

Constructor Summary
`DbDump(Environment env, String dbName, PrintStream outputFile, String outputDirectory, boolean formatUsingPrintable)` Create a DbDump object for a specific environment and database.

Method Summary
`void` | `dump()` Perform the dump.
`static void` | `main(String[] argv)` The main used by the DbDump utility.

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Constructor Detail

### DbDump

    public DbDump(Environment env,
                  String dbName,
                  PrintStream outputFile,
                  String outputDirectory,
                  boolean formatUsingPrintable)

  Create a DbDump object for a specific environment and database.

  Parameters:
    `env` - The Environment containing the database to dump.

    `dbName` - The name of the database to dump.

    `outputFile` - The output stream to dump the database to.

    `outputDirectory` - The directory for *.dump files (salvage mode).

    `formatUsingPrintable` - true if the dump should use printable characters.

Method Detail

### main

    public static void main(String[] argv)
                     throws DatabaseException,
                            IOException

  The main used by the DbDump utility.

  Parameters:
    `argv` - The arguments accepted by the DbDump utility.

        usage: java { com.sleepycat.je.util.DbDump | -jar je-<version>.jar DbDump }
                    [-f output-file] [-l] [-p] [-V]
                    [-s database] -h dbEnvHome [-rR] [-v]
                    [-d directory]

    -f - the file to dump to.
    -l - list the databases in the environment.
    -p - If characters in either the key or data items are printing characters (as defined by isprint(3)), use printing characters in file to represent them. This option permits users to use standard text editors and tools to modify the contents of databases.
    -V - display the version of the JE library.
    -s database - the database to dump.
    -h dbEnvHome - the directory containing the database environment.
    -r - Salvage data from a possibly corrupt file. When used on a uncorrupted database, this option should return equivalent data to a normal dump, but most likely in a different order. The data for each database is saved into <databaseName>.dump files in the current directory. -d directory - the output directory for *.dump files (salvage mode)
    -R - Aggressively salvage data from a possibly corrupt file. The -R flag differs from the -r option in that it will return all possible data from the file at the risk of also returning already deleted or otherwise nonsensical items. Data dumped in this fashion will almost certainly have to be edited by hand or other means before the data is ready for reload into another database. The data for each database is saved into <databaseName>.dump files in the current directory.
    -v - print progress information to stdout for -r or -R mode.

  Throws:
    `DatabaseException` - if a failure occurs.
    `IOException`

### dump

    public void dump()
              throws IOException,
                     DatabaseException

  Perform the dump.

  Throws:
    `DatabaseException` - if a failure occurs.
    `IOException`

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