Oracle® MOD_PLSQL PL/SQL Gateway
This site describes all the Database Access Descriptor (DAD) level parameters that can be specified in the mod_plsql configuration file $ORACLE_HOME/Apache/modplsql/conf/dads.conf and all plsql parameters for DAD-wide configuration file $ORACLE_HOME/Apache/modplsql/conf/plsql.conf. There are also some sample DAD's to show how to configure mod_plsql.