Difference between revisions of "Logging JDBC Activity"

Revision as of 08:57, 23 May 2007

Base's JDBC bridge - the database driver to access database with an JDBC compliant driver - allows to log its activity. For this, the driver uses a logger named "org.openoffice.sdbc.jdbcBridge".

Quick start

Say you want to see erros which happen in an JDBC driver. With the Basic macros found in the overview article, this boils down to

• execute

[starbasic]

 setLogLevel( "org.openoffice.sdbc.jdbcBridge", com.sun.star.logging.LogLevel.SEVERE )

(See the overview for how to tweak more parameters of the logger.)

• (maybe restart OpenOffice.org)
• do whatever needs to be logged
• look into the log file, which is $(userurl)/org.openoffice.sdbc.jdbcBridge.log

Logged Events

Below are lists of which events are logged at which log level. Note that if you enable logging for a certain level, then all events of this level and above are logged. Below, the levels are in decreasing order.

LogLevel.SEVERE

• a driver class which has not been set up correctly
• a failure in obtaining the JDBC connection which is to be bridged
• most (if not all) exceptions thrown by the JDBC driver

LogLevel.WARNING

No events are logged at this level.

LogLevel.INFO

• connecting to a database, and shutting down of connections
• execution and disposal of statements
• executeQuery and executeUpdate calls
• setting the escape processing of a statement

LogLevel.CONFIG

No events are logged at this level.

LogLevel.FINE

• statement related connection activity, such as creation and preparation of statements and calls
• successful retrieving of a system JDBC connection

LogLevel.FINER

• setting certain statement attributes such as fetch direction and fetch size
• setting parameters of a prepared statement
• translating SQL statements to native SQL
• the update count of statements

LogLevel.FINEST

• meta data activitiy, such as asking for database properties and settings