My Oracle Support Banner

Date Format Errors ORA-1801 on Database (Doc ID 846080.1)

Last updated on MARCH 10, 2019

Applies to:

Oracle Database - Enterprise Edition - Version and later
Oracle Database Cloud Schema Service - Version N/A and later
Oracle Database Exadata Express Cloud Service - Version N/A and later
Oracle Database Exadata Cloud Machine - Version N/A and later
Oracle Cloud Infrastructure - Database Service - Version N/A and later
Information in this document applies to any platform.


- Getting ORA-01801
- Had this error for over 2 years.
- Since upgraded the database to didn't have any problems.
- Today changed the application servers and we faced the problem.
- Rebooting database servers or application servers seemed to trigger the problem.

Workarounds Used reflect a change of syntax in an example query.  Substitute similar syntax for your query based on the example below:

Either use option 1 -


To view full details, sign in with your My Oracle Support account.

Don't have a My Oracle Support account? Click to get started!

In this Document

My Oracle Support provides customers with access to over a million knowledge articles and a vibrant support community of peers and Oracle experts.