JDBC Client

JDBC Client mk Sun, 03/28/2010 - 23:15

Note: the jdbcclient tool is only provided for performing basic JDBC tests.  It is not supported, mclient should be used instead.

The textual client using the JDBC protocol comes with several options to fine-tune the interaction with the database server. A synopsis of the calling arguments is given below

     java -jar ${prefix}/share/monetdb/lib/jdbcclient.jar  \
             [-h host[:port]] [-p port] \
     		[-f file] [-u user] [-l language] [-d [database]] \
     		[-D [table]] [-e] [-X<opt>]

or using long option equivalents –host –port –file –user –language –dump –echo –database. Arguments may be written directly after the option like -p50000.

If no host and port are given, localhost and 50000 are assumed. An .monetdb file may exist in the user's home directory. This file can contain preferences to use each time the program is started. Options given on the command line override the preferences file. The .monetdb file syntax is <option>=<value> where option is one of the options host, port, file, mode debug, or password. Note that the last one is perilous and therefore not available as command line option. If no input file is given using the -f flag, an interactive session is started on the terminal.

NOTE The JDBC protocol does not support the SQL DEBUG <query>, option. Use the mclient tool instead.



-h --host

The hostname of the host that runs the MonetDB database. A port number can be supplied by use of a colon, i.e. -h somehost:12345.

-p --port

The port number to connect to.

-f --file

A file name to use either for reading or writing. The file will be used for writing when dump mode is used (-D –dump). In read mode, the file can also be an URL pointing to a plain text file that is optionally gzip compressed.

-u --user

The username to use when connecting to the database.

-d --database

Try to connect to the given database (only makes sense if connecting to monetdbd).

-l --language

Use the given language, defaults to 'sql'.


This screen.


Display driver version and exit.

-e --echo

Also outputs the contents of the input file, if any.

-q --quiet

Suppress printing the welcome header.

-D --dump

Dumps the given table(s), or the complete database if none given.



Writes a transmission log to disk for debugging purposes. If a file name is given, it is used, otherwise a file called monet<timestamp>.log is created. A given file will never be overwritten; instead a unique variation of the file is used.


Use the given hash algorithm during challenge response. Supported algorithm names: SHA1, MD5, plain.


The output mode when dumping. Default is sql, xml may be used for an experimental XML output.


Indicates that a batch should be used instead of direct communication with the server for each statement. If a number is given, it is used as batch size. I.e. 8000 would execute the contents on the batch after each 8000 read rows. Batching can greatly speedup the process of restoring a database dump.