写在前面
需求
1.备份系统日志表T_S_LOG, 按照操作时间字段OPERATETIME, 将每天的日志增量备份到另一张表.
思路
1.创建一张数据结构完全相同的表T_S_LOG_BAK作为备份表
2.查出T_S_LOG中需要备份的数据
3.将数据赋给游标变量
4.遍历游标将数据逐条插入T_S_LOG_BAK
5.创建无参存储过程将游标的这部分操作作为存储过程主体执行
6.创建定时任务定时执行该存储过程
操作环境
Oracle11g
T_S_LOG日志表(部分数据)
1 -- ---------------------------- 2 -- Table structure for T_S_LOG 3 -- ---------------------------- 4 DROP TABLE "T_S_LOG"; 5 CREATE TABLE "T_S_LOG" ( 6 "ID" NVARCHAR2(32) NOT NULL , 7 "BROSWER" NVARCHAR2(100) NULL , 8 "LOGCONTENT" NCLOB NOT NULL , 9 "LOGLEVEL" NUMBER(6) NULL , 10 "NOTE" NCLOB NULL , 11 "OPERATETIME" DATE NOT NULL , 12 "OPERATETYPE" NUMBER(6) NULL , 13 "USERID" NVARCHAR2(32) NULL , 14 "USERNAME" NVARCHAR2(50) NULL , 15 "REALNAME" NVARCHAR2(50) NULL 16 ) 17 LOGGING 18 NOCOMPRESS 19 NOCACHE 20 21 ; 22 COMMENT ON COLUMN "T_S_LOG"."ID" IS 'id'; 23 COMMENT ON COLUMN "T_S_LOG"."BROSWER" IS '???'; 24 COMMENT ON COLUMN "T_S_LOG"."LOGCONTENT" IS '????'; 25 COMMENT ON COLUMN "T_S_LOG"."LOGLEVEL" IS '????'; 26 COMMENT ON COLUMN "T_S_LOG"."NOTE" IS 'IP'; 27 COMMENT ON COLUMN "T_S_LOG"."OPERATETIME" IS '????'; 28 COMMENT ON COLUMN "T_S_LOG"."OPERATETYPE" IS '????'; 29 COMMENT ON COLUMN "T_S_LOG"."USERID" IS '??ID'; 30 COMMENT ON COLUMN "T_S_LOG"."USERNAME" IS '????'; 31 COMMENT ON COLUMN "T_S_LOG"."REALNAME" IS '????'; 32 33 -- ---------------------------- 34 -- Records of T_S_LOG 35 -- ---------------------------- 36 INSERT INTO "T_S_LOG" VALUES ('402881f363ba3bfc0163ba3ddd270002', 'Chrome', '入职员工更新成功', '5', '本地', TO_DATE('2018-06-01 15:26:46', 'YYYY-MM-DD HH24:MI:SS'), '1', '8a8ab0b246dc81120146dc8181950052', 'admin', '管理员'); 37 INSERT INTO "T_S_LOG" VALUES ('402881f363ba41670163ba41cafe0000', 'Chrome', '用户: admin[JEECG开源社区]common.login.success', '1', '192.168.1.115', TO_DATE('2018-06-01 15:31:04', 'YYYY-MM-DD HH24:MI:SS'), '1', '8a8ab0b246dc81120146dc8181950052', 'admin', '管理员'); 38 INSERT INTO "T_S_LOG" VALUES ('402881f363ba41670163ba4234b50001', 'Chrome', '订单主信息删除成功', '4', '本地', TO_DATE('2018-06-01 15:31:31', 'YYYY-MM-DD HH24:MI:SS'), '1', '8a8ab0b246dc81120146dc8181950052', 'admin', '管理员'); 39 INSERT INTO "T_S_LOG" VALUES ('402881f363ba41670163ba4270e80002', 'Chrome', '错误异常: NumberFormatException,错误描述：For input string: "2017-10-26 12:00"', '6', '本地', TO_DATE('2018-06-01 15:31:46', 'YYYY-MM-DD HH24:MI:SS'), '3', '8a8ab0b246dc81120146dc8181950052', 'admin', '管理员'); 40 INSERT INTO "T_S_LOG" VALUES ('402881f363ba41670163ba42f3ab0008', 'Chrome', '添加成功', '3', '本地', TO_DATE('2018-06-01 15:32:20', 'YYYY-MM-DD HH24:MI:SS'), '1', '8a8ab0b246dc81120146dc8181950052', 'admin', '管理员'); 41 INSERT INTO "T_S_LOG" VALUES ('402881f363ba41670163ba434993000a', 'Chrome', '错误异常: BusinessException,错误描述：Data truncation: Out of range value adjusted for column ''order_money'' at row 1; SQL [n/a]; nested exception is org.hibernate.exception.DataException: Data truncation: Out of range value adjusted for column ''order_money'' at row 1', '6', '本地', TO_DATE('2018-06-01 15:32:42', 'YYYY-MM-DD HH24:MI:SS'), '3', '8a8ab0b246dc81120146dc8181950052', 'admin', '管理员'); 42 INSERT INTO "T_S_LOG" VALUES ('402881f363ba41670163ba43946d000b', 'Chrome', '更新成功', '5', '本地', TO_DATE('2018-06-01 15:33:01', 'YYYY-MM-DD HH24:MI:SS'), '1', '8a8ab0b246dc81120146dc8181950052', 'admin', '管理员'); 43 44 -- ---------------------------- 45 -- Indexes structure for table T_S_LOG 46 -- ---------------------------- 47 CREATE INDEX "FK_OE64K4852UYLHYC5A00RFWTAY" 48 ON "T_S_LOG" ("USERID" ASC) 49 LOGGING 50 VISIBLE; 51 52 -- ---------------------------- 53 -- Checks structure for table T_S_LOG 54 -- ---------------------------- 55 ALTER TABLE "T_S_LOG" ADD CHECK ("ID" IS NOT NULL); 56 ALTER TABLE "T_S_LOG" ADD CHECK ("LOGCONTENT" IS NOT NULL); 57 ALTER TABLE "T_S_LOG" ADD CHECK ("OPERATETIME" IS NOT NULL); 58 59 -- ---------------------------- 60 -- Primary Key structure for table T_S_LOG 61 -- ---------------------------- 62 ALTER TABLE "T_S_LOG" ADD PRIMARY KEY ("ID");
T_S_LOG_BAK备份表
1 -- ---------------------------- 2 -- Table structure for T_S_LOG_BAK 3 -- ---------------------------- 4 DROP TABLE "T_S_LOG_BAK"; 5 CREATE TABLE "T_S_LOG_BAK" ( 6 "ID" NVARCHAR2(32) NOT NULL , 7 "BROSWER" NVARCHAR2(100) NULL , 8 "LOGCONTENT" NCLOB NOT NULL , 9 "LOGLEVEL" NUMBER(6) NULL , 10 "NOTE" NCLOB NULL , 11 "OPERATETIME" DATE NOT NULL , 12 "OPERATETYPE" NUMBER(6) NULL , 13 "USERID" NVARCHAR2(32) NULL , 14 "USERNAME" NVARCHAR2(50) NULL , 15 "REALNAME" NVARCHAR2(50) NULL 16 ) 17 LOGGING 18 NOCOMPRESS 19 NOCACHE 20 21 ; 22 COMMENT ON COLUMN "T_S_LOG_BAK"."ID" IS 'id'; 23 COMMENT ON COLUMN "T_S_LOG_BAK"."BROSWER" IS '???'; 24 COMMENT ON COLUMN "T_S_LOG_BAK"."LOGCONTENT" IS '????'; 25 COMMENT ON COLUMN "T_S_LOG_BAK"."LOGLEVEL" IS '????'; 26 COMMENT ON COLUMN "T_S_LOG_BAK"."NOTE" IS 'IP'; 27 COMMENT ON COLUMN "T_S_LOG_BAK"."OPERATETIME" IS '????'; 28 COMMENT ON COLUMN "T_S_LOG_BAK"."OPERATETYPE" IS '????'; 29 COMMENT ON COLUMN "T_S_LOG_BAK"."USERID" IS '??ID'; 30 COMMENT ON COLUMN "T_S_LOG_BAK"."USERNAME" IS '????'; 31 COMMENT ON COLUMN "T_S_LOG_BAK"."REALNAME" IS '????'; 32 33 -- ---------------------------- 34 -- Indexes structure for table T_S_LOG_BAK 35 -- ---------------------------- 36 CREATE INDEX "FK_OE64K4852UYLHYC5A00RFWTAY" 37 ON "T_S_LOG_BAK" ("USERID" ASC) 38 LOGGING 39 VISIBLE; 40 41 -- ---------------------------- 42 -- Checks structure for table T_S_LOG_BAK 43 -- ---------------------------- 44 ALTER TABLE "T_S_LOG_BAK" ADD CHECK ("ID" IS NOT NULL); 45 ALTER TABLE "T_S_LOG_BAK" ADD CHECK ("LOGCONTENT" IS NOT NULL); 46 ALTER TABLE "T_S_LOG_BAK" ADD CHECK ("OPERATETIME" IS NOT NULL); 47 48 -- ---------------------------- 49 -- Primary Key structure for table T_S_LOG_BAK 50 -- ---------------------------- 51 ALTER TABLE "T_S_LOG_BAK" ADD PRIMARY KEY ("ID");
操作步骤
1.创建备份表(上面贴了)
2.声明游标,定义记录变量接收查询出的数据,遍历记录插入到备份表,关闭游标
1 declare 2 --定义游标 3 cursor cursor_log is 4 select * from t_s_log where to_char(t_s_log.operatetime,'yyyyMMdd') = to_char(sysdate,'yyyyMMdd'); 5 --定义记录变量 6 ls_curinfo cursor_log%rowtype; 7 begin 8 open cursor_log;--打开游标 9 loop 10 FETCH cursor_log 11 INTO ls_curinfo;--获取记录值 12 EXIT WHEN cursor_log%NOTFOUND; 13 insert into t_s_log_bak(ID, 14 BROSWER, 15 LOGCONTENT, 16 LOGLEVEL, 17 NOTE, 18 OPERATETIME, 19 OPERATETYPE, 20 USERID, 21 USERNAME, 22 REALNAME) values(ls_curinfo.ID, 23 ls_curinfo.BROSWER, 24 ls_curinfo.LOGCONTENT, 25 ls_curinfo.LOGLEVEL, 26 ls_curinfo.NOTE, 27 ls_curinfo.OPERATETIME, 28 ls_curinfo.OPERATETYPE, 29 ls_curinfo.USERID, 30 ls_curinfo.USERNAME, 31 ls_curinfo.REALNAME); commit; 32 end loop; 33 close cursor_log;--关闭游标 34 end;
到这里测试没什么问题就继续创建存储过程
3.创建无参存储过程
存储过程不细说了,大致结构就是:
CREATE OR REPLACE procedure 存储过程名字 as begin ...(过程体)... end;
过程体就是第2步定义的游标及遍历那部分直接粘过来就可以了
完整的存储过程如下:(这里用Navicat执行时遇到点问题, 改为PL/SQL执行没问题, 不太清楚是什么操作)
1 CREATE OR REPLACE 2 procedure procedure_log_bak as 3 begin 4 declare 5 --定义游标 6 cursor cursor_log is 7 select * from t_s_log where to_char(t_s_log.operatetime,'yyyyMMdd') = to_char(sysdate,'yyyyMMdd'); 8 --定义记录变量 9 ls_curinfo cursor_log%rowtype; 10 begin 11 open cursor_log;--打开游标 12 loop 13 FETCH cursor_log 14 INTO ls_curinfo;--获取记录值 15 EXIT WHEN cursor_log%NOTFOUND; 16 insert into t_s_log_bak(ID, 17 BROSWER, 18 LOGCONTENT, 19 LOGLEVEL, 20 NOTE, 21 OPERATETIME, 22 OPERATETYPE, 23 USERID, 24 USERNAME, 25 REALNAME) values(ls_curinfo.ID, 26 ls_curinfo.BROSWER, 27 ls_curinfo.LOGCONTENT, 28 ls_curinfo.LOGLEVEL, 29 ls_curinfo.NOTE, 30 ls_curinfo.OPERATETIME, 31 ls_curinfo.OPERATETYPE, 32 ls_curinfo.USERID, 33 ls_curinfo.USERNAME, 34 ls_curinfo.REALNAME); commit; 35 end loop; 36 close cursor_log;--关闭游标 37 end; 38 end;
到这里手动执行存储过程也没问题就继续创建定时任务,即Oracle的job
4.创建定时任务
使用PL/SQL找到DBMS_Jobs右键New...不细说了,可以移步https://www.cnblogs.com/yx007/p/6519544.html这篇讲的很详细,这里主要记录一下创建完成后遇到的问题.当创建完成后job并没有执行,Last_date这个字段是空的, 并且Next_date并不是job定义的执行时间.
到这里需要手动执行job:
执行之后last_date字段有值了,而且next_date的值也是想要定义的job执行时间了
到这里就没什么问题了.
新需求补充
2.在日志表T_S_LOG中插入一条记录logcontent字段为yyyyMMdd日志备份成功.(后来提的需求)
思路
在存储过程的最后, 也就是遍历游标的结束后新增insert语句即可.
不细说了,只说一下变量的拼接是用的||符号.例如:bak_date := bak_date||'日志备份成功';
最新的存储过程为:
1 CREATE OR REPLACE 2 procedure procedure_log_bak as 3 gen_guid varchar2(100); 4 bak_date varchar2(100); 5 begin 6 select sys_guid() into gen_guid from dual; 7 select to_char(sysdate,'yyyyMMdd') into bak_date from dual; 8 bak_date := bak_date||'日志备份成功'; 9 declare 10 --定义游标 11 cursor cursor_log is 12 select * from t_s_log where to_char(t_s_log.operatetime,'yyyyMMdd') = to_char(sysdate,'yyyyMMdd'); 13 --定义记录变量 14 ls_curinfo cursor_log%rowtype; 15 begin 16 open cursor_log;--打开游标 17 loop 18 FETCH cursor_log 19 INTO ls_curinfo;--获取记录值 20 EXIT WHEN cursor_log%NOTFOUND; 21 insert into t_s_log_bak(ID, 22 BROSWER, 23 LOGCONTENT, 24 LOGLEVEL, 25 NOTE, 26 OPERATETIME, 27 OPERATETYPE, 28 USERID, 29 USERNAME, 30 REALNAME) values(ls_curinfo.ID, 31 ls_curinfo.BROSWER, 32 ls_curinfo.LOGCONTENT, 33 ls_curinfo.LOGLEVEL, 34 ls_curinfo.NOTE, 35 ls_curinfo.OPERATETIME, 36 ls_curinfo.OPERATETYPE, 37 ls_curinfo.USERID, 38 ls_curinfo.USERNAME, 39 ls_curinfo.REALNAME); commit; 40 end loop; 41 close cursor_log;--关闭游标 42 end; 43 insert into t_s_log(id,logcontent,operatetime) values(gen_guid,bak_date,sysdate); 44 end;
同样,修改后用PL/SQL执行即可修改成功.