ORA-23420: interval must evaluate to a time in the future

Cause : The parameter "interval" evaluates to a time earlier than SYSDATE.

Action - How to fix it : DBA Scripts :: www.high-oracle.com/scripts

Choose an expression that evaluates to a time later than SYSDATE.

update : 25-09-2017

ORA-23420 - interval must evaluate to a time in the future
ORA-23420 - interval must evaluate to a time in the future

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