Oracle通过JOB定时创建序列
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。看来
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:
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。
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:
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。
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:
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。

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