oracle数据库快照

(172)上配置用于源的UDB_V2和UDB的tnsname.ora,以便直接在172上分别操控源和目的:
UDB_V2 =
  (DESCRIPTION =
    (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.10.91)(PORT = 1521))
    (CONNECT_DATA =
      (SERVER = DEDICATED)
      (SERVICE_NAME = smsc)
    )
  )
UDB =
  (DESCRIPTION =
    (ADDRESS = (PROTOCOL = TCP)(HOST = localhost.localdomain)(PORT = 1522))
    (CONNECT_DATA =
      (SERVER = DEDICATED)
      (SERVICE_NAME = udb)
    )
  )
1,在源数据库上登录,查询
sqlplus udb_v2/udb@udb
执行:
select * from global_name;
得到
SMSC.REGRESS.RDBMS.DEV.US.ORACLE.COM , 记住数据库名:smsc
2,在目的数据库上登录:
sqlplus 'udb_v2/udb123#@UDB'
执行:
create database link smsc connect to udb_v2 identified by udb using 'test';
建立dblink
其中smsc为源数据库的数据库名,test为服务器端的tnsname!
test为tnsname.ora中连接源的服务名
检查下dblink是否可用:
select count(*) from device@smsc;
看是否能查到结果
3,再源数据库上登录
建立快照日志:
create snapshot log on userid;
create snapshot log on service;
4,在目的数据库上登录
建立快照,会很长时间,这时数据会导入
create snapshot sn_userid as select * from userid@smsc;
create snapshot sn_service as select * from service@smsc;
将快照插入userid和service表中
insert into userid select * from sn_userid;
insert into service select * from sn_service;

建立快照的触发器
sn_userid:
CREATE OR REPLACE TRIGGER UDB_V2.TRI_SN_USERID_AFR
AFTER DELETE OR INSERT OR UPDATE
ON UDB_V2.SN_USERID REFERENCING NEW AS NEW OLD AS OLD
FOR EACH ROW
declare
    tmp_id varchar2(40);
    tmp_ss integer;
begin
  dbms_output.put_line('begin triger on sn_userid');
  if inserting then
   
    dbms_output.put_line('insert');
    for p in(
      select user_id into tmp_id from userid where user_id=:new.user_id
    )
    loop
        tmp_id:=p.user_id;
    end loop;
    if (tmp_id is null) then
      INSERT INTO USERID
        (
            USER_ID, PASSWD, USERID_STATUS,
            CREATE_TIME, EXT_PASSWD, TMP_PASSWD,
            TMP_CREATE_TIME, TMP_EXIPRATION_TIME, OTP_TOKENID,
            SEX, EMAIL, LAST_MODIFY_TIME,
            PROVINCE_NO, CITY_NO, CERTIFICATE_TYPE,
            CERTIFICATE_NO, PAY_TYPE, PRE_PAY_SYSTEM_NO,
            PAY_EFFECT_MODE, PAY_EFFECT_TIME, SRC_DEVICE_NO,
            ACTIVE_STATUS, UPDATE_FLAG, USERID_TYPE,
            AREACODE, CUSTOMERID, USERNAME,
            SERSET_TYPE, BINDING_TELE_NO, P_USERID,
            ALIAS, ACCOUNT_ACT, ACCOUNT_TYPE,
            ACCOUNT_STATE, ACCOUNT_RETRY, ACCOUNT_RETRYTIME,
            PASSWD_ACT, USERID_LOGIN_STATUS, USERIDSTATUS_REFTIME,
            MOBILE_PHONE, SSO_FLAG, UIM,
            CUSTOMERFLAG, PASSWD2, P_USERID_PASSPORT,
            USERID_STATUS_EXT
        )
        VALUES
        (
            :NEW.USER_ID, :NEW.PASSWD, :NEW.USERID_STATUS,
            :NEW.CREATE_TIME, :NEW.EXT_PASSWD, :NEW.TMP_PASSWD,
            :NEW.TMP_CREATE_TIME, :NEW.TMP_EXIPRATION_TIME, :NEW.OTP_TOKENID,
            :NEW.SEX, :NEW.EMAIL, :NEW.LAST_MODIFY_TIME,
            :NEW.PROVINCE_NO, :NEW.CITY_NO, :NEW.CERTIFICATE_TYPE,
            :NEW.CERTIFICATE_NO, :NEW.PAY_TYPE, :NEW.PRE_PAY_SYSTEM_NO,
            :NEW.PAY_EFFECT_MODE, :NEW.PAY_EFFECT_TIME, :NEW.SRC_DEVICE_NO,
            :NEW.ACTIVE_STATUS, :NEW.UPDATE_FLAG, :NEW.USERID_TYPE,
            :NEW.AREACODE, :NEW.CUSTOMERID, :NEW.USERNAME,
            :NEW.SERSET_TYPE, :NEW.BINDING_TELE_NO, :NEW.P_USERID,
            :NEW.ALIAS, :NEW.ACCOUNT_ACT, :NEW.ACCOUNT_TYPE,
            :NEW.ACCOUNT_STATE, :NEW.ACCOUNT_RETRY, :NEW.ACCOUNT_RETRYTIME,
            :NEW.PASSWD_ACT, :NEW.USERID_LOGIN_STATUS, :NEW.USERIDSTATUS_REFTIME,
            :NEW.MOBILE_PHONE, :NEW.SSO_FLAG, :NEW.UIM,
            :NEW.CUSTOMERFLAG, :NEW.PASSWD2,:NEW.P_USERID_PASSPORT,
            :NEW.USERID_STATUS_EXT
        );
    end if;
  end if;
  if updating then
     dbms_output.put_line('updated');
     for p in(select * from userid where user_id=:OLD.user_id)
     loop
         if (
                   (p.PASSWD                  != :new.PASSWD)
                   OR (p.USERID_STATUS        != :new.USERID_STATUS)
                   OR (p.CREATE_TIME          != :new.CREATE_TIME)
                   OR (p.EXT_PASSWD           != :new.EXT_PASSWD)
                   OR (p.TMP_PASSWD           != :new.TMP_PASSWD)
                   OR (p.TMP_EXIPRATION_TIME  != :new.TMP_EXIPRATION_TIME)
                   OR (p.OTP_TOKENID          != :new.OTP_TOKENID)
                   OR (p.SEX                  != :new.SEX)
                   OR (p.EMAIL                != :new.EMAIL)
                   OR (p.LAST_MODIFY_TIME     != :new.LAST_MODIFY_TIME)
                   OR (p.PROVINCE_NO          != :new.PROVINCE_NO)
                   OR (p.CITY_NO              != :new.CITY_NO)
                   OR (p.CERTIFICATE_TYPE     != :new.CERTIFICATE_TYPE)
                   OR (p.CERTIFICATE_NO       != :new.CERTIFICATE_NO)
                   OR (p.PAY_TYPE             != :new.PAY_TYPE)
                   OR (p.PRE_PAY_SYSTEM_NO    != :new.PRE_PAY_SYSTEM_NO)
                   OR (p.PAY_EFFECT_MODE      != :new.PAY_EFFECT_MODE)
                   OR (p.PAY_EFFECT_TIME      != :new.PAY_EFFECT_TIME)
                   OR (p.SRC_DEVICE_NO        != :new.SRC_DEVICE_NO)
                   OR (p.ACTIVE_STATUS        != :new.ACTIVE_STATUS)
                   OR (p.UPDATE_FLAG          != :new.UPDATE_FLAG)
                   OR (p.USERID_TYPE          != :new.USERID_TYPE)
                   OR (p.AREACODE             != :new.AREACODE)
                   OR (p.CUSTOMERID           != :new.CUSTOMERID)
                   OR (p.USERNAME             != :new.USERNAME)
                   OR (p.SERSET_TYPE          != :new.SERSET_TYPE)
                   OR (p.BINDING_TELE_NO      != :new.BINDING_TELE_NO)
                   OR (p.P_USERID             != :new.P_USERID)
                   OR (p.ALIAS                != :new.ALIAS)
                   OR (p.ACCOUNT_ACT          != :new.ACCOUNT_ACT)
                   OR (p.ACCOUNT_TYPE         != :new.ACCOUNT_TYPE)
                   OR (p.ACCOUNT_STATE        != :new.ACCOUNT_STATE)
                   OR (p.ACCOUNT_RETRY        != :new.ACCOUNT_RETRY)
                   OR (p.ACCOUNT_RETRYTIME    != :new.ACCOUNT_RETRYTIME)
                   OR (p.PASSWD_ACT           != :new.PASSWD_ACT)
                   OR (p.USERID_LOGIN_STATUS  != :new.USERID_LOGIN_STATUS)
                   OR (p.USERIDSTATUS_REFTIME != :new.USERIDSTATUS_REFTIME)
                   OR (p.MOBILE_PHONE         != :new.MOBILE_PHONE)
                   OR (p.SSO_FLAG             != :new.SSO_FLAG)
                   OR (p.UIM                  != :new.UIM)
                   OR (p.CUSTOMERFLAG         != :new.CUSTOMERFLAG)
                   OR (p.PASSWD2              != :new.PASSWD2)
                   OR (p.P_USERID_PASSPORT    != :new.P_USERID_PASSPORT)
                   OR (p.USERID_STATUS_EXT    != :new.USERID_STATUS_EXT)
                   ) then
            UPDATE USERID
            SET    USER_ID              = :new.USER_ID,
                   PASSWD               = :new.PASSWD,
                   USERID_STATUS        = :new.USERID_STATUS,
                   CREATE_TIME          = :new.CREATE_TIME,
                   EXT_PASSWD           = :new.EXT_PASSWD,
                   TMP_PASSWD           = :new.TMP_PASSWD,
                   TMP_CREATE_TIME      = :new.TMP_CREATE_TIME,
                   TMP_EXIPRATION_TIME  = :new.TMP_EXIPRATION_TIME,
                   OTP_TOKENID          = :new.OTP_TOKENID,
                   SEX                  = :new.SEX,
                   EMAIL                = :new.EMAIL,
                   LAST_MODIFY_TIME     = :new.LAST_MODIFY_TIME,
                   PROVINCE_NO          = :new.PROVINCE_NO,
                   CITY_NO              = :new.CITY_NO,
                   CERTIFICATE_TYPE     = :new.CERTIFICATE_TYPE,
                   CERTIFICATE_NO       = :new.CERTIFICATE_NO,
                   PAY_TYPE             = :new.PAY_TYPE,
                   PRE_PAY_SYSTEM_NO    = :new.PRE_PAY_SYSTEM_NO,
                   PAY_EFFECT_MODE      = :new.PAY_EFFECT_MODE,
                   PAY_EFFECT_TIME      = :new.PAY_EFFECT_TIME,
                   SRC_DEVICE_NO        = :new.SRC_DEVICE_NO,
                   ACTIVE_STATUS        = :new.ACTIVE_STATUS,
                   UPDATE_FLAG          = :new.UPDATE_FLAG,
                   USERID_TYPE          = :new.USERID_TYPE,
                   AREACODE             = :new.AREACODE,
                   CUSTOMERID           = :new.CUSTOMERID,
                   USERNAME             = :new.USERNAME,
                   SERSET_TYPE          = :new.SERSET_TYPE,
                   BINDING_TELE_NO      = :new.BINDING_TELE_NO,
                   P_USERID             = :new.P_USERID,
                   ALIAS                = :new.ALIAS,
                   ACCOUNT_ACT          = :new.ACCOUNT_ACT,
                   ACCOUNT_TYPE         = :new.ACCOUNT_TYPE,
                   ACCOUNT_STATE        = :new.ACCOUNT_STATE,
                   ACCOUNT_RETRY        = :new.ACCOUNT_RETRY,
                   ACCOUNT_RETRYTIME    = :new.ACCOUNT_RETRYTIME,
                   PASSWD_ACT           = :new.PASSWD_ACT,
                   USERID_LOGIN_STATUS  = :new.USERID_LOGIN_STATUS,
                   USERIDSTATUS_REFTIME = :new.USERIDSTATUS_REFTIME,
                   MOBILE_PHONE         = :new.MOBILE_PHONE,
                   SSO_FLAG             = :new.SSO_FLAG,
                   UIM                  = :new.UIM,
                   CUSTOMERFLAG         = :new.CUSTOMERFLAG,
                   PASSWD2              = :new.PASSWD2,
                   P_USERID_PASSPORT    = :new.P_USERID_PASSPORT,
                   USERID_STATUS_EXT    = :new.USERID_STATUS_EXT
            WHERE  USER_ID              = :new.USER_ID
            ;
         end if;
     end loop;
  end if;
  if deleting then
 
    dbms_output.put_line('deleted');
    delete from service where user_id=:old.user_id;
    delete from userid where user_id=:old.user_id;
  end if;
  dbms_output.put_line('end triger on sn_userid');
end TRI_SN_USERID_AFR;
/

/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
service:
CREATE OR REPLACE TRIGGER UDB_V2.TRI_SN_SERVICE_AFR
AFTER DELETE OR INSERT OR UPDATE
ON UDB_V2.SN_SERVICE REFERENCING NEW AS NEW OLD AS OLD
FOR EACH ROW
declare
    tmp_ss INTEGER;
begin
  dbms_output.put_line('begin triger on sn_service');
  if inserting then
  dbms_output.put_line('insert');
      for p in(
      select SS_INDEX into tmp_ss from SERVICE where SS_INDEX=:new.SS_INDEX
      )
      loop
        tmp_ss:=p.SS_INDEX;
      end loop;
     
      if (tmp_ss is null) then
      dbms_output.put_line('in insert service');
      INSERT INTO SERVICE (
        SS_INDEX, USER_ID, SS_PASSWORD,
        SS_STATUS, SRC_DEVICE_NO, CREATE_TIME,
        LAST_MODIFY_TIME, AUTH_SRC, REG_EFFECT_MODE,
        REG_EFFECT_TIME, BIND_TYPE, BIND_EFFECT_MODE,
        BIND_EFFECT_TIME, SS_TYPE, USERID_SS_LOGIN_STATUS,
        SS_ID, SS_PASSWD_ACT, SS_ACTIVE_FLAG
        )
      VALUES (
        :NEW.SS_INDEX, :NEW.USER_ID, :NEW.SS_PASSWORD,
        :NEW.SS_STATUS, :NEW.SRC_DEVICE_NO, :NEW.CREATE_TIME,
        :NEW.LAST_MODIFY_TIME, :NEW.AUTH_SRC, :NEW.REG_EFFECT_MODE,
        :NEW.REG_EFFECT_TIME, :NEW.BIND_TYPE, :NEW.BIND_EFFECT_MODE,
        :NEW.BIND_EFFECT_TIME, :NEW.SS_TYPE, :NEW.USERID_SS_LOGIN_STATUS ,
        :NEW.SS_ID, :NEW.SS_PASSWD_ACT, :NEW.SS_ACTIVE_FLAG
         );
      end if;
     
  end if;
 
  if updating then
     dbms_output.put_line('updated');
     for p in(select * from SERVICE where SS_INDEX=:OLD.SS_INDEX)
     loop
         if (
             (P.USER_ID                    != :NEW.USER_ID)
             OR (P.SS_PASSWORD             != :NEW.SS_PASSWORD)
             OR (P.SS_STATUS               != :NEW.SS_STATUS)
             OR (P.SRC_DEVICE_NO           != :NEW.SRC_DEVICE_NO)
             OR (P.CREATE_TIME             != :NEW.CREATE_TIME)
             OR (P.LAST_MODIFY_TIME        != :NEW.LAST_MODIFY_TIME)
             OR (P.AUTH_SRC                != :NEW.AUTH_SRC)
             OR (P.REG_EFFECT_MODE         != :NEW.REG_EFFECT_MODE)
             OR (P.REG_EFFECT_TIME         != :NEW.REG_EFFECT_TIME)
             OR (P.BIND_TYPE               != :NEW.BIND_TYPE)
             OR (P.BIND_EFFECT_MODE        != :NEW.BIND_EFFECT_MODE)
             OR (P.BIND_EFFECT_TIME        != :NEW.BIND_EFFECT_TIME)
             OR (P.SS_TYPE                 != :NEW.SS_TYPE)
             OR (P.USERID_SS_LOGIN_STATUS  != :NEW.USERID_SS_LOGIN_STATUS)
             OR (P.SS_ID                   != :NEW.SS_ID)
             OR (P.SS_PASSWD_ACT           != :NEW.SS_PASSWD_ACT)
             OR (P.SS_ACTIVE_FLAG          != :NEW.SS_ACTIVE_FLAG)
            )
         then
            UPDATE SERVICE
            SET   
             SS_INDEX                = :NEW.SS_INDEX,
             USER_ID                 = :NEW.USER_ID,
             SS_PASSWORD             = :NEW.SS_PASSWORD,
             SS_STATUS               = :NEW.SS_STATUS,
             SRC_DEVICE_NO           = :NEW.SRC_DEVICE_NO,
             CREATE_TIME             = :NEW.CREATE_TIME,
             LAST_MODIFY_TIME        = :NEW.LAST_MODIFY_TIME,
             AUTH_SRC                = :NEW.AUTH_SRC,
             REG_EFFECT_MODE         = :NEW.REG_EFFECT_MODE,
             REG_EFFECT_TIME         = :NEW.REG_EFFECT_TIME,
             BIND_TYPE               = :NEW.BIND_TYPE,
             BIND_EFFECT_MODE        = :NEW.BIND_EFFECT_MODE,
             BIND_EFFECT_TIME        = :NEW.BIND_EFFECT_TIME,
             SS_TYPE                 = :NEW.SS_TYPE,
             USERID_SS_LOGIN_STATUS  = :NEW.USERID_SS_LOGIN_STATUS,
             SS_ID                   = :NEW.SS_ID,
             SS_PASSWD_ACT           = :NEW.SS_PASSWD_ACT,
             SS_ACTIVE_FLAG          = :NEW.SS_ACTIVE_FLAG
            WHERE  SS_INDEX           = :new.SS_INDEX
            ;
         end if;
     end loop;
  end if;
 
  if deleting then
 
      dbms_output.put_line('deleted');
      delete from service where SS_INDEX=:old.SS_INDEX;
  end if;
  dbms_output.put_line('end triger on sn_service');
end TRI_SN_SERVICE_AFR;
/

修改快照刷新时间
Alter snapshot sn_userid refresh fast Start with sysdate+2/(24) next sysdate+1/(24);
Alter snapshot sn_service refresh fast Start with sysdate+2/(24) next sysdate+1/(24);
首次刷新在30秒之后,以后每分钟刷新一次


/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
附件:
1.查看快照最后一次刷新时间
SELECT NAME,LAST_REFRESH FROM ALL_SNAPSHOT_REFRESH_TIMES;
2.查看快照下次执行时间
select last_date,next_date,what from user_jobs order by next_date;
3.手动执行更新
EXEC DBMS_SNAPSHOT.REFRESH ('sn_service','F');
手动刷新方式1
begin
dbms_refresh.refresh('sn_service');
end;
手动刷新方式2
EXEC DBMS_SNAPSHOT.REFRESH('sn_service','F'); //第一个参数是快照名,第二个参数 F 是快速刷新 C 是完全刷新.
4.删除快照日志(在源上)
drop snapshot log on userid;
drop snapshot log on service;
5删除掉快照(在目的上)
drop snapshot sn_userid;
drop snapshot sn_service;