Is the procedure correct for generating Sequence number in oracle -


please check if following procedure correct? insertion not happening.

i want generate sequence number in first column. please let me know if correct.

create or replace procedure sp_jcp_set_det_bnd_lst(       p_channel in varchar2,        p_deptbrandlistname in varchar2,       p_groupno in number,     p_userid in varchar2     )   sequenceid          number;  begin  select seqid1+1 sequenceid from(select channel_dept_brand_list_id seqid1  gmppfc.channel_dept_brand_list order  channel_dept_brand_list_id desc) rownum=1;  insert gmppfc.channel_dept_brand_list ( channel_dept_brand_list_id, channel_nm, dept_brand_list_nm, group_no, create_user_id, create_ts, change_user_id, change_ts) values ( sequenceid,  p_channel, p_deptbrandlistname, p_groupno, p_userid, sysdate, null, null );  commit; null; end sp_jcp_set_det_bnd_lst;

in principle work provided table not empty commented maxx.

however, proper implementation use sequence , such plain case consider trigger.

it one:

create sequence channel_dept_brand_seq start 1 nomaxvalue minvalue 1 nocycle;  create or replace trigger bir_channel_dept_brand_list     before insert on channel_dept_brand_list     each row begin     :new.channel_dept_brand_list_id := channel_dept_brand_seq.nextval;     :new.create_ts := sysdate; end; /

your solution create problems in multi-user environment when several sessions call procedure @ same time.


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