February 2005 look at the page PL Java Website.change the file C:\Program Files\PostgreSQL\8.0\data\postgresql.conf: dynamic_library_path = ‘$libdir;C:/Program Files/PostgreSQL/8.0/pljava’custom_variable_classes = ‘pljava’pljava.classpath = ‘C:/Program Files/PostgreSQL/8.0/pljava/pljava.jar’ Set the classpath: set CLASSPATH=%CLASSPATH%;deploy.jar;..\jdbc\postgresql-8.0.309.jdbc2.jar;pljava.jar change into directory “Program Files\PostgreSQL\8.0\pljava” and execute java org.postgresql.pljava.deploy.Deployer -install -database mydatabase -user