Best way to generate an incrementing ID in multithreaded environment

Hi
I have a "best practice" kind of question.
I need to insert a record in an Oracle table where primary key is an incrementing numeric ID. In order to insert a new record, first i need to figure out what the maximum ID is and then increment it.
In a multithreaded environment, this can cause an error when, let's say, there are 2 threads, and each one is simultaneously querying the table for the max ID. Each query will return the same result and hence only 1 query will succeed at inserting the new record. The second insert will cause a primary key conflict when trying to execute.
Is making the code synchronized the best solution in this situation or is there a better way?
Thanks in advance.

Hi,
using Oracle sequence could be easy and effective, just insert sequence.NEXTVAL into the particular column. Oracle should take care of possible conflicts, it should always provide different (means incremented) value.
I dont recommend using agregate function MAX(column).
Good luck,
Rgds
Miroslav

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