重置oracle序列从指定数字开始

declare
n number(10);
v_startnum number(10):=211406;--从多少开始
v_step number(10):=1;--步进
tsql varchar2(200);
v_seqname varchar2(200):='COMMENTID';--序列名
begin
execute immediate 'select '||v_seqname||'.nextval from dual' into n;
n:=v_startnum-n-v_step;--从10000001开始
tsql:='alter sequence '||v_seqname||' increment by '|| n;
execute immediate tsql;
execute immediate 'select '||v_seqname||'.nextval from dual' into n;
tsql:='alter sequence '||v_seqname||' increment by '||v_step;
execute immediate tsql;
end;