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)

 -- ----------------------------

 -- Table structure for T_S_LOG

 -- ----------------------------

 DROP TABLE  "T_S_LOG";

 CREATE TABLE  "T_S_LOG" (

 "ID" NVARCHAR2(32) NOT NULL ,

 "BROSWER" NVARCHAR2(100) NULL ,

 "LOGCONTENT" NCLOB NOT NULL ,

 "LOGLEVEL" NUMBER(6) NULL ,

 "NOTE" NCLOB NULL ,

 "OPERATETIME" DATE NOT NULL ,

 "OPERATETYPE" NUMBER(6) NULL ,

 "USERID" NVARCHAR2(32) NULL ,

 "USERNAME" NVARCHAR2(50) NULL ,

 "REALNAME" NVARCHAR2(50) NULL

 )

 LOGGING

 NOCOMPRESS

 NOCACHE

 ;

 COMMENT ON COLUMN  "T_S_LOG"."ID" IS 'id';

 COMMENT ON COLUMN  "T_S_LOG"."BROSWER" IS '???';

 COMMENT ON COLUMN  "T_S_LOG"."LOGCONTENT" IS '????';

 COMMENT ON COLUMN  "T_S_LOG"."LOGLEVEL" IS '????';

 COMMENT ON COLUMN  "T_S_LOG"."NOTE" IS 'IP';

 COMMENT ON COLUMN  "T_S_LOG"."OPERATETIME" IS '????';

 COMMENT ON COLUMN  "T_S_LOG"."OPERATETYPE" IS '????';

 COMMENT ON COLUMN  "T_S_LOG"."USERID" IS '??ID';

 COMMENT ON COLUMN  "T_S_LOG"."USERNAME" IS '????';

 COMMENT ON COLUMN  "T_S_LOG"."REALNAME" IS '????';

 -- ----------------------------

 -- Records of T_S_LOG

 -- ----------------------------

 INSERT INTO  "T_S_LOG" VALUES ('402881f363ba3bfc0163ba3ddd270002', 'Chrome', '入职员工更新成功', '', '本地', TO_DATE('2018-06-01 15:26:46', 'YYYY-MM-DD HH24:MI:SS'), '', '8a8ab0b246dc81120146dc8181950052', 'admin', '管理员');

 INSERT INTO  "T_S_LOG" VALUES ('402881f363ba41670163ba41cafe0000', 'Chrome', '用户: admin[JEECG开源社区]common.login.success', '', '192.168.1.115', TO_DATE('2018-06-01 15:31:04', 'YYYY-MM-DD HH24:MI:SS'), '', '8a8ab0b246dc81120146dc8181950052', 'admin', '管理员');

 INSERT INTO  "T_S_LOG" VALUES ('402881f363ba41670163ba4234b50001', 'Chrome', '订单主信息删除成功', '', '本地', TO_DATE('2018-06-01 15:31:31', 'YYYY-MM-DD HH24:MI:SS'), '', '8a8ab0b246dc81120146dc8181950052', 'admin', '管理员');

 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"', '', '本地', TO_DATE('2018-06-01 15:31:46', 'YYYY-MM-DD HH24:MI:SS'), '', '8a8ab0b246dc81120146dc8181950052', 'admin', '管理员');

 INSERT INTO  "T_S_LOG" VALUES ('402881f363ba41670163ba42f3ab0008', 'Chrome', '添加成功', '', '本地', TO_DATE('2018-06-01 15:32:20', 'YYYY-MM-DD HH24:MI:SS'), '', '8a8ab0b246dc81120146dc8181950052', 'admin', '管理员');

 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', '', '本地', TO_DATE('2018-06-01 15:32:42', 'YYYY-MM-DD HH24:MI:SS'), '', '8a8ab0b246dc81120146dc8181950052', 'admin', '管理员');

 INSERT INTO  "T_S_LOG" VALUES ('402881f363ba41670163ba43946d000b', 'Chrome', '更新成功', '', '本地', TO_DATE('2018-06-01 15:33:01', 'YYYY-MM-DD HH24:MI:SS'), '', '8a8ab0b246dc81120146dc8181950052', 'admin', '管理员');

 -- ----------------------------

 -- Indexes structure for table T_S_LOG

 -- ----------------------------

 CREATE INDEX  "FK_OE64K4852UYLHYC5A00RFWTAY"

 ON  "T_S_LOG" ("USERID" ASC)

 LOGGING

 VISIBLE;

 -- ----------------------------

 -- Checks structure for table T_S_LOG

 -- ----------------------------

 ALTER TABLE  "T_S_LOG" ADD CHECK ("ID" IS NOT NULL);

 ALTER TABLE  "T_S_LOG" ADD CHECK ("LOGCONTENT" IS NOT NULL);

 ALTER TABLE  "T_S_LOG" ADD CHECK ("OPERATETIME" IS NOT NULL);

 -- ----------------------------

 -- Primary Key structure for table T_S_LOG

 -- ----------------------------

 ALTER TABLE  "T_S_LOG" ADD PRIMARY KEY ("ID");

T_S_LOG_BAK备份表

 -- ----------------------------

 -- Table structure for T_S_LOG_BAK

 -- ----------------------------

 DROP TABLE  "T_S_LOG_BAK";

 CREATE TABLE  "T_S_LOG_BAK" (

 "ID" NVARCHAR2(32) NOT NULL ,

 "BROSWER" NVARCHAR2(100) NULL ,

 "LOGCONTENT" NCLOB NOT NULL ,

 "LOGLEVEL" NUMBER(6) NULL ,

 "NOTE" NCLOB NULL ,

 "OPERATETIME" DATE NOT NULL ,

 "OPERATETYPE" NUMBER(6) NULL ,

 "USERID" NVARCHAR2(32) NULL ,

 "USERNAME" NVARCHAR2(50) NULL ,

 "REALNAME" NVARCHAR2(50) NULL

 )

 LOGGING

 NOCOMPRESS

 NOCACHE

 ;

 COMMENT ON COLUMN  "T_S_LOG_BAK"."ID" IS 'id';

 COMMENT ON COLUMN  "T_S_LOG_BAK"."BROSWER" IS '???';

 COMMENT ON COLUMN  "T_S_LOG_BAK"."LOGCONTENT" IS '????';

 COMMENT ON COLUMN  "T_S_LOG_BAK"."LOGLEVEL" IS '????';

 COMMENT ON COLUMN  "T_S_LOG_BAK"."NOTE" IS 'IP';

 COMMENT ON COLUMN  "T_S_LOG_BAK"."OPERATETIME" IS '????';

 COMMENT ON COLUMN  "T_S_LOG_BAK"."OPERATETYPE" IS '????';

 COMMENT ON COLUMN  "T_S_LOG_BAK"."USERID" IS '??ID';

 COMMENT ON COLUMN  "T_S_LOG_BAK"."USERNAME" IS '????';

 COMMENT ON COLUMN  "T_S_LOG_BAK"."REALNAME" IS '????';

 -- ----------------------------

 -- Indexes structure for table T_S_LOG_BAK

 -- ----------------------------

 CREATE INDEX  "FK_OE64K4852UYLHYC5A00RFWTAY"

 ON  "T_S_LOG_BAK" ("USERID" ASC)

 LOGGING

 VISIBLE;

 -- ----------------------------

 -- Checks structure for table T_S_LOG_BAK

 -- ----------------------------

 ALTER TABLE  "T_S_LOG_BAK" ADD CHECK ("ID" IS NOT NULL);

 ALTER TABLE  "T_S_LOG_BAK" ADD CHECK ("LOGCONTENT" IS NOT NULL);

 ALTER TABLE  "T_S_LOG_BAK" ADD CHECK ("OPERATETIME" IS NOT NULL);

 -- ----------------------------

 -- Primary Key structure for table T_S_LOG_BAK

 -- ----------------------------

 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

 declare

   --定义游标

   cursor cursor_log is

     select * from t_s_log where to_char(t_s_log.operatetime,'yyyyMMdd') = to_char(sysdate,'yyyyMMdd');

   --定义记录变量

   ls_curinfo cursor_log%rowtype;

 begin

   open cursor_log;--打开游标

   loop

     FETCH cursor_log

       INTO ls_curinfo;--获取记录值

     EXIT WHEN cursor_log%NOTFOUND;

    insert into t_s_log_bak(ID,

       BROSWER,

       LOGCONTENT,

       LOGLEVEL,

       NOTE,

       OPERATETIME,

       OPERATETYPE,

       USERID,

       USERNAME,

       REALNAME) values(ls_curinfo.ID,

       ls_curinfo.BROSWER,

       ls_curinfo.LOGCONTENT,

       ls_curinfo.LOGLEVEL,

       ls_curinfo.NOTE,

       ls_curinfo.OPERATETIME,

       ls_curinfo.OPERATETYPE,

       ls_curinfo.USERID,

       ls_curinfo.USERNAME,

       ls_curinfo.REALNAME); commit;

   end loop;

   close cursor_log;--关闭游标

 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)

 CREATE OR REPLACE

 procedure procedure_log_bak as

 begin

   declare

   --定义游标

   cursor cursor_log is

     select * from t_s_log where to_char(t_s_log.operatetime,'yyyyMMdd') = to_char(sysdate,'yyyyMMdd');

   --定义记录变量

   ls_curinfo cursor_log%rowtype;

 begin

   open cursor_log;--打开游标

   loop

     FETCH cursor_log

       INTO ls_curinfo;--获取记录值

     EXIT WHEN cursor_log%NOTFOUND;

    insert into t_s_log_bak(ID,

       BROSWER,

       LOGCONTENT,

       LOGLEVEL,

       NOTE,

       OPERATETIME,

       OPERATETYPE,

       USERID,

       USERNAME,

       REALNAME) values(ls_curinfo.ID,

       ls_curinfo.BROSWER,

       ls_curinfo.LOGCONTENT,

       ls_curinfo.LOGLEVEL,

       ls_curinfo.NOTE,

       ls_curinfo.OPERATETIME,

       ls_curinfo.OPERATETYPE,

       ls_curinfo.USERID,

       ls_curinfo.USERNAME,

       ls_curinfo.REALNAME); commit;

   end loop;

   close cursor_log;--关闭游标

 end;

 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:

 CREATE OR REPLACE

 procedure procedure_log_bak as

 gen_guid varchar2(100);

 bak_date varchar2(100);

 begin

   select sys_guid() into gen_guid from dual;

   select to_char(sysdate,'yyyyMMdd') into bak_date from dual;

   bak_date := bak_date||'日志备份成功';

   declare

   --定义游标

   cursor cursor_log is

     select * from t_s_log where to_char(t_s_log.operatetime,'yyyyMMdd') = to_char(sysdate,'yyyyMMdd');

   --定义记录变量

   ls_curinfo cursor_log%rowtype;

 begin

   open cursor_log;--打开游标

   loop

     FETCH cursor_log

       INTO ls_curinfo;--获取记录值

     EXIT WHEN cursor_log%NOTFOUND;

    insert into t_s_log_bak(ID,

       BROSWER,

       LOGCONTENT,

       LOGLEVEL,

       NOTE,

       OPERATETIME,

       OPERATETYPE,

       USERID,

       USERNAME,

       REALNAME) values(ls_curinfo.ID,

       ls_curinfo.BROSWER,

       ls_curinfo.LOGCONTENT,

       ls_curinfo.LOGLEVEL,

       ls_curinfo.NOTE,

       ls_curinfo.OPERATETIME,

       ls_curinfo.OPERATETYPE,

       ls_curinfo.USERID,

       ls_curinfo.USERNAME,

       ls_curinfo.REALNAME); commit;

   end loop;

   close cursor_log;--关闭游标

 end;

   insert into t_s_log(id,logcontent,operatetime) values(gen_guid,bak_date,sysdate);

 end;

同样,修改后用PL/SQL执行即可修改成功.

感谢

Oracle存储过程

Oracle游标

PL/SQL创建定时任务

Oracle定时器INTERVAI(时间段)写法

Oracle的job不执行解决方法

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