关于数据库数据同步的问题

今天遇到一个要求，需要将数据库间的数据同步，之前没有弄过，百度了一下，知道了可以用DBLink，然后新建好了一个DBLink，然后就是编写一个定时任务调用同步语句，

定时任务比较简单，关键是存储过程比较繁琐，于是百度了一下数据库同步的便捷方法，了解了可以用oracle数据库可以marge语句，十分便利，so，花了十分钟写好了同步的

存储过程，然后对这个同步语句进行一定的优化，根据一个数据库的最新的时间节点与另一个数据库最晚的时间节点进行判断与是否要更新，编写一个博文，以做总结和记录，

后期有遇到或想了解的可以在留言，语句比较简单，就是根据表的主键进行判断，有则插入，无则添加，下面就是语句内容

CREATE OR REPLACE PROCEDURE PROCEDURE1 AS
BEGIN
  --单位PAK_GCCOMP
merge into  PAK_GCCOMP b using (select * from pak_gccomp@scjg where row_addtime>(select row_addtime from(select * from (select * from
pak_gccomp order by row_addtime desc) where rownum=1))) c on (b.PCOMP_ID=c.PCOMP_ID)
when matched then
update set b.COMP_ID=c.COMP_ID, b.COMP_NAME=c.COMP_NAME,b.COMP_ZZXL=c.COMP_ZZXL,b.COMP_ZZXL_NAME=c.COMP_ZZXL_NAME,b.COMP_LXR=c.COMP_LXR,b.COMP_LXR_PHONE =c.COMP_LXR_PHONE,b.COMP_FZR=c.COMP_FZR,b.COMP_FZR_PHONE=c.COMP_FZR_PHONE,b.COMP_LWFZR =c.COMP_LWFZR,
      b.COMP_LWFZR_PHONE=c.COMP_LWFZR_PHONE, b.GC_ID=c.GC_ID,b.GC_CONTENT=c.GC_CONTENT,b.ROW_ADDUSERID=c.ROW_ADDUSERID,b.ROW_ADDUSER=c.ROW_ADDUSER,b.ROW_ADDTIME =c.ROW_ADDTIME,b.IS_USERD=c.IS_USERD,b.BACC_ID=c.BACC_ID,b.PCOMP_ID_B =c.PCOMP_ID_B
when not matched then
insert values (c.pcomp_id,c.COMP_ID, c.COMP_NAME,c.COMP_ZZXL,c.COMP_ZZXL_NAME,c.COMP_LXR,c.COMP_LXR_PHONE,c.COMP_FZR,c.COMP_FZR_PHONE,c.COMP_LWFZR,
        c.COMP_LWFZR_PHONE, c.GC_ID,c.GC_CONTENT,c.ROW_ADDUSERID,c.ROW_ADDUSER,c.ROW_ADDTIME,c.IS_USERD,c.BACC_ID,c.PCOMP_ID_B);
commit;

--班组PAK_GROUP
merge into  PAK_GROUP b using (select * from PAK_GROUP@scjg where row_addtime>(select row_addtime from(select * from (select * from
PAK_GROUP order by row_addtime desc) where rownum=1))) c on (b.GROUP_ID=c.GROUP_ID)
when matched then
update set b.GROUP_NAME=c.GROUP_NAME,b.ROW_ADDUSER=c.ROW_ADDUSER, b.ROW_ADDUSERID=c.ROW_ADDUSERID,b.ROW_ADDTIME=c.ROW_ADDTIME,b.GC_ID=c.GC_ID,b.PERSION_ID=c.PERSION_ID, b.PCOMP_ID=c.PCOMP_ID,b.PERSION_WORKTYPE=c.PERSION_WORKTYPE
when not matched then
insert values (c.GROUP_ID, c.GROUP_NAME,c.ROW_ADDUSER,c.ROW_ADDUSERID,c.ROW_ADDTIME,c.GC_ID,c.PERSION_ID, c.PCOMP_ID,c.PERSION_WORKTYPE);
commit;

--进出场PAK_LWGX
merge into  PAK_LWGX b using (select * from PAK_LWGX@scjg where row_addtime>(select row_addtime from(select * from (select * from
PAK_LWGX order by row_addtime desc) where rownum=1))) c on (b.LWGX_ID=c.LWGX_ID)
when matched then
update set b.LWGX_NO=c.LWGX_NO,b.LWGX_STIME=c.LWGX_STIME, b.LWGX_ETIME=c.LWGX_ETIME,b.LWGX_PAYMETHOD=c.LWGX_PAYMETHOD,b.ROW_ADDUSER=c.ROW_ADDUSER,b.ROW_ADDUSERID=c.ROW_ADDUSERID, b.ROW_ADDTIME=c.ROW_ADDTIME,b.PERSION_ID=c.PERSION_ID,b.COMP_ID=c.COMP_ID,b.GROUP_ID=c.GROUP_ID,b.GC_ID=c.GC_ID
when not matched then
insert values (c.LWGX_ID,c.LWGX_NO,c.LWGX_STIME,c.LWGX_ETIME,c.LWGX_PAYMETHOD,c.ROW_ADDUSER,c.ROW_ADDUSERID,c.ROW_ADDTIME,c.PERSION_ID,c.COMP_ID,c.GROUP_ID,c.GC_ID);
commit;

--人员PAK_PERSION
merge into  PAK_PERSION b using (select * from PAK_PERSION@scjg where row_addtime>(select row_addtime from(select * from (select * from
PAK_PERSION order by row_addtime desc) where rownum=1))) c on (b.PERSION_ID=c.PERSION_ID)
when matched then  --b.PERSION_ID=c.PERSION_ID,
update set b.PERSION_NAME=c.PERSION_NAME,b.PERSION_TEL=c.PERSION_TEL,b.PERSION_CODE=c.PERSION_CODE,b.PERSION_BIRTHDAY=c.PERSION_BIRTHDAY,b.PERSION_SEX=c.PERSION_SEX,b.PERSION_NATION=c.PERSION_NATION, b.PERSION_ADDR=c.PERSION_ADDR,b.ROW_ADDUSER=c.ROW_ADDUSER,b.ROW_ADDUSERID=c.ROW_ADDUSERID,b.ROW_ADDTIME=c.ROW_ADDTIME,b.PERSION_IMGURL=c.PERSION_IMGURL,b.PERSION_PHONE=c.PERSION_PHONE
when not matched then
insert values (c.PERSION_ID,c.PERSION_NAME,c.PERSION_TEL,c.PERSION_CODE,c.PERSION_BIRTHDAY,c.PERSION_SEX,c.PERSION_NATION,c.PERSION_ADDR,c.ROW_ADDUSER,c.ROW_ADDUSERID,c.ROW_ADDTIME,c.PERSION_IMGURL,c.PERSION_PHONE);
commit;    

--考勤表PAK_ATTENDANCE
merge into  PAK_ATTENDANCE b using PAK_ATTENDANCE@scjg c on (b.id=c.id)
when matched then
update set b.idcardnum=c.idcardnum,b.createtime=c.createtime, b.name=c.name,b.serialnumber=c.serialnumber,b.importtype=c.importtype,b.bacc_id=c.bacc_id, b.workplace=c.workplace
when not matched then
insert values (c.id, c.idcardnum, c.createtime, c.name,c.serialnumber,c.importtype,c.bacc_id, c.workplace);
commit;  

--企业端用户信息SF_AUTH_APPUSER
merge into  SF_AUTH_APPUSER@scjg b using (select * from SF_AUTH_APPUSER where row_addtime>(select row_addtime from(select * from (select * from
SF_AUTH_APPUSER@scjg order by row_addtime desc) where rownum=1))) c on (b.APPUSER_ID=c.APPUSER_ID)
when matched then
update set  b.APPUSER_LOGID=c.APPUSER_LOGID, b.APPUSER_NAME=c.APPUSER_NAME,b.APPUSER_ALIASNAME=c.APPUSER_ALIASNAME,b.APPUSER_DOMAIN=c.APPUSER_DOMAIN,b.APPUSER_DDEPT=c.APPUSER_DDEPT,b.APPUSER_MPHONE =c.APPUSER_MPHONE,b.APPUSER_EMAIL=c.APPUSER_EMAIL,b.APPUSER_LASTLOGIN=c.APPUSER_LASTLOGIN,b.APPUSER_ROOT=c.APPUSER_ROOT,b.APPUSER_PWD =c.APPUSER_PWD,
      b.APPUSER_CHANGEPWD=c.APPUSER_CHANGEPWD, b.APPUSER_CHANGEPWDDATE=c.APPUSER_CHANGEPWDDATE,b.APPUSER_LOGERROR=c.APPUSER_LOGERROR,b.APPUSER_TRYLOG=c.APPUSER_TRYLOG,b.APPUSER_BEGINDATE=c.APPUSER_BEGINDATE,b.APPUSER_OUTSERVICEDATE =c.APPUSER_OUTSERVICEDATE,b.APPUSER_GBID=c.APPUSER_GBID,b.APPUSER_DEFAULTPAGE=c.APPUSER_DEFAULTPAGE,
      b.APPUSER_INDEXPORTAL =c.APPUSER_INDEXPORTAL,b.APPUSER_RELATION=c.APPUSER_RELATION, b.VALID_FLAG=c.VALID_FLAG,b.ROW_ADDUSER=c.ROW_ADDUSER,b.ROW_ADDTIME=c.ROW_ADDTIME,b.ROW_ADDUSERID=c.ROW_ADDUSERID,b.DDEPT_ORDER =c.DDEPT_ORDER,b.ROW_EDITUSER=c.ROW_EDITUSER,b.ROW_EDITTIME=c.ROW_EDITTIME,b.ROW_EDITUSERID=c.ROW_EDITUSERID,
      b.ROW_STATUS=c.ROW_STATUS,b.APPUSER_ORDER=c.APPUSER_ORDER,b.GCUSER_STATUS=c.GCUSER_STATUS,b.IS_BJ=c.IS_BJ
when not matched then
insert values (c.APPUSER_ID,c.APPUSER_LOGID,c.APPUSER_NAME,c.APPUSER_ALIASNAME,c.APPUSER_DOMAIN,c.APPUSER_DDEPT,c.APPUSER_MPHONE,c.APPUSER_EMAIL,c.APPUSER_LASTLOGIN,c.APPUSER_ROOT,c.APPUSER_PWD,
      c.APPUSER_CHANGEPWD,c.APPUSER_CHANGEPWDDATE,c.APPUSER_LOGERROR,c.APPUSER_TRYLOG,c.APPUSER_BEGINDATE,c.APPUSER_OUTSERVICEDATE,c.APPUSER_GBID,c.APPUSER_DEFAULTPAGE,
      c.APPUSER_INDEXPORTAL,c.APPUSER_RELATION,c.VALID_FLAG,c.ROW_ADDUSER,c.ROW_ADDTIME,c.ROW_ADDUSERID,c.DDEPT_ORDER,c.ROW_EDITUSER,c.ROW_EDITTIME,c.ROW_EDITUSERID,
      c.ROW_STATUS,c.APPUSER_ORDER,c.GCUSER_STATUS,c.IS_BJ);
commit;

--PAK_BANK_ACCOUNT
merge into  PAK_BANK_ACCOUNT@scjg b using (select * from PAK_BANK_ACCOUNT where ADD_TIME>(select ADD_TIME from(select * from (select * from
PAK_BANK_ACCOUNT@scjg order by ADD_TIME desc) where rownum=1))) c on (b.bacc_id=c.bacc_id)
when matched then
update set b.BANK_BRANCHNAME=c.BANK_BRANCHNAME,b.BANK_ACCOUNT=c.BANK_ACCOUNT, b.BANK_MONEY=c.BANK_MONEY,b.BANK_ID=c.BANK_ID,b.APPUSER_LOGID=c.APPUSER_LOGID,b.IS_IMP=c.IS_IMP, b.LZZGY1_PHONE=c.LZZGY1_PHONE,b.LZZGY1_NAME=c.LZZGY1_NAME,b.STAFF_COMPFZR=c.STAFF_COMPFZR, b.STAFF_NAME=c.STAFF_NAME,b.STAFF_PHONE=c.STAFF_PHONE,b.YEZHU=c.YEZHU,b.PHONE_YEZHU=c.PHONE_YEZHU, b.STAFF_COMPFZRPHONE=c.STAFF_COMPFZRPHONE,
b.JS_COMP_NAME=c.JS_COMP_NAME,b.SG_COMP_NAME=c.SG_COMP_NAME,b.ADD_USER=c.ADD_USER,b.ADD_TIME=c.ADD_TIME,b.BACC_NAME=c.BACC_NAME,b.IS_BSJ=c.IS_BSJ,b.BANK_AREA=c.BANK_AREA,b.PROJECT_ID=c.PROJECT_ID,b.BANK_STATE=c.BANK_STATE,b.QXFLAG=c.QXFLAG
when not matched then
insert values (c.bacc_id,c.BANK_BRANCHNAME,c.BANK_ACCOUNT,c.BANK_MONEY,c.BANK_ID,c.APPUSER_LOGID,c.IS_IMP,c.LZZGY1_PHONE,c.LZZGY1_NAME,c.STAFF_COMPFZR,c.STAFF_NAME,c.STAFF_PHONE,c.YEZHU,c.PHONE_YEZHU,c.STAFF_COMPFZRPHONE,c.JS_COMP_NAME,c.SG_COMP_NAME,c.ADD_USER,c.ADD_TIME,c.BACC_NAME,c.IS_BSJ,c.BANK_AREA,c.PROJECT_ID,c.BANK_STATE,c.QXFLAG);
commit; 

--PAK_BANK_GC
merge into  PAK_BANK_GC@scjg b using PAK_BANK_GC c on (b.BGC_ID=c.BGC_ID)
when matched then
update set b.GC_ID=c.GC_ID,b.BACC_ID=c.BACC_ID
when not matched then
insert values (c.BGC_ID,c.GC_ID, c.BACC_ID);
commit; 

--PAK_ACCOUNT;
merge into  PAK_ACCOUNT b using (select * from PAK_ACCOUNT@scjg where row_addtime>(select row_addtime from(select * from (select * from
PAK_ACCOUNT order by row_addtime desc) where rownum=1))) c on (b.ACCOUNT_ID=c.ACCOUNT_ID)
when matched then
update set  b.GROUP_ID=c.GROUP_ID, b.PERSION_ID=c.PERSION_ID,b.ACCOUNT_NO=c.ACCOUNT_NO,b.ACCOUNT_MONTH=c.ACCOUNT_MONTH,b.ACCOUNT_DAYS=c.ACCOUNT_DAYS,b.SALARY_SUM =c.SALARY_SUM,b.SALARY_NUM=c.SALARY_NUM,b.ROW_ADDUSER=c.ROW_ADDUSER,b.ROW_ADDUSERID =c.ROW_ADDUSERID,
      b.ROW_ADDTIME=c.ROW_ADDTIME, b.FILE_ID=c.FILE_ID,b.GC_ID=c.GC_ID,b.TASK_CODE=c.TASK_CODE
when not matched then
insert values (c.ACCOUNT_ID,c.GROUP_ID, c.PERSION_ID,c.ACCOUNT_NO,c.ACCOUNT_MONTH,c.ACCOUNT_DAYS,c.SALARY_SUM,c.SALARY_NUM,c.ROW_ADDUSER,c.ROW_ADDUSERID,
      c.ROW_ADDTIME, c.FILE_ID,c.GC_ID,c.TASK_CODE);
commit;

--PAK_PERSION_BANK
merge into  PAK_PERSION_BANK b using (select * from PAK_PERSION_BANK@scjg where row_addtime>(select row_addtime from(select * from (select * from
PAK_PERSION_BANK order by row_addtime desc) where rownum=1))) c on (b.BANK_ID=c.BANK_ID)
when matched then
update set  b.BANK_TYPE=c.BANK_TYPE, b.BANK_CODE=c.BANK_CODE,b.PERSION_ID=c.PERSION_ID,b.GC_ID=c.GC_ID,b.ROW_ADDTIME=c.ROW_ADDTIME
when not matched then
insert values (c.BANK_ID,c.BANK_TYPE, c.BANK_CODE,c.PERSION_ID,c.GC_ID,c.ROW_ADDTIME);
commit;

END PROCEDURE1;

ps。lz目前是一个刚入门小白，看见很多前辈大神有记录的好习惯，遂有意向见贤思齐，然后后期会坚持养成这个好习惯

2017.08.17