Variables used in tests
-----------------------

** Connecting to Oracle **

ORACLE_USERID - important

Which user & password to use when running tests against a real Oracle database

Should be 'user/password' or a longer string with connection details.

     $ export ORACLE_USERID='scott/tiger'

ORACLE_USERID_2

Provides a second set of user credentials when needed

ORACLE_DSN

DSN details when connecting to real Oracle for tests

    $ export ORACLE_DSN='dbi:Oracle:testdb'

DBI_DSN

If ORACLE_DSN is not provided, this will be used. Otherwise falls back to internal default.

** Creation of tables, views, functions etc **

DBD_ORACLE_SEQ - important

Appended to table, view, function (etc) that are created during testing to help
prevent collisions

DBD_SKIP_TABLE_DROP

Skips dropping temporary tables when tests complete. Use to examine the mess.

** Other **

NLS_DATE_FORMAT

Sets the date format as normal

Need more details
-----------------

NLS_NCHAR

NLS_LANG


???

DBI_USER

DBI_PASS

DBD_ALL_TESTS

Forces some tests to run, that otherwise wouldn't

