How to get current value of SEQUENCE without using NEXTVAL
Hi,
Here is my requirement. I need to provide a screen for allowing user to change the sequence # at any given instance. If I use CURRVAL, i get error 'ORA-08002 sequence EMP_NO.CURRVAL is not yet defined in this session'
If I use NEXTVAL and then CURRVAL it works, but i loose a sequence # which i cannot afford, since it's an employee #.
Help required in solving the problem.
Thanks,
Raj
Use this...
select last_number from user_sequences where sequence_name = '<your-sequence>'
to get the current sequence value. However bear in mind that on a multi-user system (and which system today is not?) there may be many users firing this query, so in case of a next sequence no. allocation request fired by more thn one of them the sequences each gets will not all be this number + 1.
HTH,
Mohit.
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