I have used this:

SELECT COUNT(*) FROM SYS_PROCEDURES WHERE P_NAME = :name

> Le 2015-04-11 à 08:45, Gang Fu <gangfu1...@gmail.com> a écrit :
> 
> Hi,
> 
> I want to ask how can we check the existence of a stored procedure before we 
> drop it?
> We need to drop the stored procedure before we create it, otherwise, there 
> will be some issue, but if we drop a stored procedure that does not exist, we 
> will get an error. So we need to check existence before drop it.
> 
> Thank you very much!
> 
> Best,
> Gang
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