http://blog.csdn.net/cuihaiyang/article/details/7872982
因为业务需要每月需要增加一个序列,想到了使用job定时创建,每次创建一年的。写此job的过程中遇到一些问题,在此记录一下。
第一步:写创建序列(sequence)的存储过程。代码如下:
- create or replace procedure pro_create_seq(sequencePrefix in varchar2)
- is
- strYear varchar2(4);
- strMonth varchar2(6);
- strSql varchar2(500);
- begin
- select to_char(sysdate,'yyyy') into strYear from dual;
- for i in 1..12 loop
- strMonth:=strYear||lpad(i,2,'0');--组装月份,形如:201201
- strSql:='create sequence '||sequencePrefix||strMonth||' start with 1 increment by 1 MINVALUE 0 MAXVALUE 99999999999 ';
- execute immediate strSql;
- end loop;
- end pro_create_seq;
创建存储过程成功,但测试该报错了:
SQL> exec pro_create_seq('FACTORY_NOTICE_INFO_DB_');
begin pro_create_seq('FACTORY_NOTICE_INFO_DB_'); end;
ORA-01031: 权限不足
ORA-06512: 在 "YCPS.PRO_CREATE_SEQ", line 16
ORA-06512: 在 line 2
在网上搜索解决方法发现原来是在存储过程中ROLE无效,需要显示授权。见http://topic.csdn.net/u/20110507/21/8fb89cfa-30b4-41d0-9ebf-57ea74057960.html?27630
即有两种解决方法:
1、通过GRANT CREATE SEQUENCE TO YCPS;来显示给用户授权
2、修改存储过程,加入Authid Current_User时存储过程可以使用role权限。
我采用了第二种方法,即加入Authid Current_User,修改后的存储过程如下:
- create or replace procedure pro_create_seq(sequencePrefix in varchar2)
- <span style="color:#ff0000;">Authid Current_User</span> --赋予role权限
- is
- strYear varchar2(4);
- strMonth varchar2(6);
- strSql varchar2(500);
- begin
- select to_char(sysdate,'yyyy') into strYear from dual;--取年份,形如:2012
- for i in 1..12 loop
- strMonth:=strYear||lpad(i,2,'0');--组装月份,形如:201201
- strSql:='create sequence '||sequencePrefix||strMonth||' start with 1 increment by 1 MINVALUE 0 MAXVALUE 99999999999 ';
- execute immediate strSql;
- end loop;
- end pro_create_seq;
SQL> exec pro_create_seq('FACTORY_NOTICE_INFO_DB_');
PL/SQL procedure successfully completed
执行成功。
第二步:创建job,定时调用存储过程来创建sequence。
- variable job1 number;
- begin
- dbms_job.submit(:job1,'PRO_CREATE_SEQ(''FACTORY_NOTICE_INFO_DB_'');PRO_CREATE_SEQ(''FACTORY_NOTICE_INFO_XB_'');',sysdate,'add_months(TRUNC(SYSDATE,''yyyy''),12)');
- commit;
- end;
SQL> variable job1 number;
SQL> begin
2 dbms_job.submit(:job1,'PRO_CREATE_SEQ(''FACTORY_NOTICE_INFO_DB_'');PRO_CREATE_SEQ(''FACTORY_NOTICE_INFO_XB_'');',sysdate,'add_months(TRUNC(SYSDATE,''yyyy''),12)');
3 commit;
4 end;
5 /
PL/SQL procedure successfully completed
job1
---------
84
SQL> begin
2 dbms_job.run(84);
3 end;
4 /
begin
dbms_job.run(84);
end;
ORA-12011: 无法执行 1 作业
ORA-06512: 在 "SYS.DBMS_IJOB", line 637
ORA-06512: 在 "SYS.DBMS_JOB", line 284
ORA-06512: 在 line 3
可见,job创建成功了,但执行出错。查询ORA-12011错误的说明如下:
- ORA-12011: execution of string jobs failed
- Cause: An error was caught in dbms_ijob.run from one or more jobs which were due to be run.
- Action: Look at the alert log for details on which jobs failed and why.
- SQL> select value from v$diag_info where name='Diag Trace';
VALUE
--------------------------------------------------------------------------------
/u01/app/oracle/diag/rdbms/ycps/ycps1/trace
上面查找到alert log的路径,日志文件内容如下:
Thu Aug 16 14:30:57 2012
Errors in file /u01/app/oracle/diag/rdbms/ycps/ycps1/trace/ycps1_ora_2622362.trc:
ORA-12012: 自动执行作业 84 出错
ORA-01031: 权限不足
ORA-06512: 在 "YCPS.PRO_CREATE_SEQ", line 15
ORA-06512: 在 line 1
可见,仍然是权限问题。然而通过exec pro_create_seq('FACTORY_NOTICE_INFO_DB_');调用存储过程却可以执行,很让人费解。后来在http://topic.csdn.net/u/20100611/11/deec0f8f-0749-4478-acba-114a84300360.html说需要显式授权,也就是前面提到的方法2,于是测试了一下,竟然成功了:
SQL> conn sys/oracle@psdb as sysdba
Connected to Oracle Database 11g Enterprise Edition Release 11.2.0.1.0
Connected as SYS
SQL> grant create sequence to ycps;
Grant succeeded
SQL> conn ycps/ycps@psdb
Connected to Oracle Database 11g Enterprise Edition Release 11.2.0.1.0
Connected as ycps
SQL> begin
2 dbms_job.run(84);
3 end;
4 /
PL/SQL procedure successfully completed
看来Authid Current_User的使用是有局限的,在通过存储过程来执行DDL语句时需要注意授权问题