How do I reset a sequence in Oracle?

Question

In PostgreSQL, I can do something like this:

ALTER SEQUENCE serial RESTART WITH 0;

Is there an Oracle equivalent?

Answer 1

Following is the good method for resetting any sequence to 0 from Oracle:

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create or replace

procedure reset_seq( p_seq_name in varchar2 )

is

    l_val number;

begin

    execute immediate

    'select ' || p_seq_name || '.nextval from dual' INTO l_val;

    execute immediate

    'alter sequence ' || p_seq_name || ' increment by -' || l_val || 

                                                          ' minvalue 0';

    execute immediate

    'select ' || p_seq_name || '.nextval from dual' INTO l_val;

    execute immediate

    'alter sequence ' || p_seq_name || ' increment by 1 minvalue 0';

end;

/

For more information, you can refer to these links: Dynamic SQL to reset sequence value & How to reset sequences?