Skip to Main Content
  • Questions

  • nls_date_format difference between v$parameter and database_properties

Breadcrumb

Connor and Chris will both be at AI World from October 12 to October 17 , the premier Oracle conference of 2025. If you're in Vegas, please come say Hi or pop into our sessions

Question and Answer

Connor McDonald

Thanks for the question, Curious.

Asked: December 13, 2017 - 5:01 pm UTC

Last updated: December 15, 2017 - 6:38 am UTC

Version: Oracle Database 11g Express Edition Release 11.2.0.2.0 - 64bit Production

Viewed 1000+ times

You Asked

When I query v$parameter, nls_date_format is YYYY-MM-DD

When I query database_properties, nls_date_format is DD-MON-RR

Why is it different? Could this cause problems?

and Connor said...

database_properties are the permanent properties, ie, those used when the database was created.

v$parameter represents those in use in the current instance (or current session), eg

SQL> select value from v$parameter where name = 'nls_date_format';

VALUE
--------------------------------------------------------------------------------
DD-MON-RR

SQL> alter session set nls_date_format = 'yyyy-mm-dd';

Session altered.

SQL> select value from v$parameter where name = 'nls_date_format';

VALUE
--------------------------------------------------------------------------------
yyyy-mm-dd

1 row selected.


Rating

  (1 rating)

Is this answer out of date? If it is, please let us know via a Comment

Comments

Thanks

A reader, December 14, 2017 - 4:49 pm UTC


Connor McDonald
December 15, 2017 - 6:38 am UTC

glad we could help
more

Connor and Chris don't just spend all day on AskTOM. You can also catch regular content via Connor's blog and Chris's blog. Or if video is more your thing, check out Connor's channel and Chris's channel from their Youtube channels. And of course, keep up to date with AskTOM via the official twitter account.

More to Explore

Administration

Need more information on Administration? Check out the Administrators guide for the Oracle Database