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[[TableOfContents]]

== Can I use Torque with Oracle ==

Yes, several people are using Torque and Oracle together successfully. Oracle 
Version 8i and up are supported. You do however need to be aware of the issues 
outlined in the rest of this FAQ.

== So what if I am using BLOBS, etc. ? ==

 1.  You will need a patched version of Village. The most recent version as of 
today (December 2005) is village-2.0-dev-oraclepatched-20041022.jar which is 
available at https://sweb.uky.edu/~skkann2/village/index.html

See also http://db.apache.org/torque/oracle-howto.html 

== What should i know when using Oracle's data type DATE and TIMESTAMP ==

Oracles data type DATE support date and time with an accuracy up to seconds, 
which is fine for many applications. 
Since Version 9i Oracle introduced additional data type TIMESTAMP that supports 
additional accuracy within fractions of seconds.
So far so good, but unfortunately Oracle broke in Version 9i the behaviour of 
its own JDBC-driver. The JDBC-driver now returns for DATE only the date part 
and renders the time always as "00:00". 
Only for TIMESTAMP full date and time are returned.

=== So what if I need exact date and time?  ===

 1. When generating your Torque-classes specify all columns as type="TIMESTAMP" 
in the schema.xml for Torque-Generator, regardless if they are data type DATE 
or TIMESTAMP in your Oracle-schema.

 1. In your Oracle schema use data type TIMESTAMP for all columns where you 
need full date and time. This is recommended when creating a new database 
schema. You can easily convert DATE-columns to TIMESTAMP as Oracle casts these 
data types automatically (UPDATE mytable set newTimestampColumn=oldDateColumn). 
For existing database (especially in production environment) this may not be 
feasible:

 1. You may still use Oracles data type DATE. If you want correct time portion 
of the data you must specify Java-VM parameter 
"-Doracle.jdbc.V8Compatible=true" that causes the JDBC-driver to use old 
behaviour of JDBC-driver prior to Oracle 9i (returning full date and time for 
data type DATE)

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