Oracle Sequence nextval is jumping number back and forth

Question

I created a new table and a new sequence, I have two C# web services trying to insert records into this table using same query utilizing mySequence.nextval (and

Answer 1

From the docs...

Sequence numbers are generated independently of tables, so the same sequence can be used for one or for multiple tables. It is possible that individual sequence numbers will appear to be skipped, because they were generated and used in a transaction that ultimately rolled back. Additionally, a single user may not realize that other users are drawing from the same sequence.

http://docs.oracle.com/cd/B28359_01/server.111/b28286/statements_6015.htm#SQLRF01314