信息修改失败,原因[cn.sh.ideal.action.RepositoryAction.update()]:SqlMapClient operation; bad SQL grammar []; nested exception is com.ibatis.common.jdbc.exception.NestedSQLException: --- The error occurred in config/T_REPOSITORY_SqlMap.xml. --- The error occurred while applying a parameter map. --- Check the T_REPOSITORY.updCheckRepository. --- Check the statement (update procedure failed). --- Cause: java.sql.SQLException: ORA-04091: table FAQ.T_REPOSITORY is mutating, trigger/function may not see it ORA-06512: at "FAQ.REP_INDEX_LUCENE_U_TRIG", line 3 ORA-04088: error during execution of trigger 'FAQ.REP_INDEX_LUCENE_U_TRIG' ORA-06512: at "FAQ.JAVA_UPD_CHECK_REPOSITORY_PRO", line 100 ORA-06512: at line 1触发器如下:CREATE OR REPLACE TRIGGER rep_index_lucene_u_trig AFTER update ON FAQ.T_REPOSITORY
FOR EACH ROW
BEGIN
delete from t_repository_index where pk_auto_id=:old.PK_AUTO_ID;
insert into t_repository_index(pk_auto_id,uk_file_id,title,content,type,level_id,post_user_name,update_time,OPE_CODE,annex,key_word)
SELECT pk_auto_id,uk_file_id,title,content,retype,level_id,post_user_name,update_time,OPE_CODE,annex,key_word
from V_REPOSITORY_INDEX_LUCENE where pk_auto_id=:new.pk_auto_id;
END;
FOR EACH ROW
BEGIN
delete from t_repository_index where pk_auto_id=:old.PK_AUTO_ID;
insert into t_repository_index(pk_auto_id,uk_file_id,title,content,type,level_id,post_user_name,update_time,OPE_CODE,annex,key_word)
SELECT pk_auto_id,uk_file_id,title,content,retype,level_id,post_user_name,update_time,OPE_CODE,annex,key_word
from V_REPOSITORY_INDEX_LUCENE where pk_auto_id=:new.pk_auto_id;
END;
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=======================
ORA-04091与 table mutating
近日解决了一个trigger中报ORA-04091错误的问题,补了关于Oracle table mutating的一课:mutating table 是指一个当前正在被update,delete,insert语句修改的表,如果在一个行级别的trigger中读取或修改一个mutating table,则往往会遇到ORA-04091错误.例如,如果在trigger中使用了select或dml 语句访问trigger所在的表,则就会收到这个错误。然而,Oracle8i和9i文档中都没有解释清楚before和after 类型的 row trigger 在对待两种不同的insert语句(insert into ... values ... 与 insert into ... select ...)时的差别:1、对于after 类型的 for each row 级别的triggers,不论哪种insert语句触发了trigger,都不允许在 trigger 中访问本trigger所依赖的table的,测试如下:
SQL> create table t1 ( c1 number,c2 varchar2(10));
Table created
SQL> create or replace trigger tri_t1
2 after insert on t1 for each row
3 declare
4 cvar varchar2(10);
5 begin
6 select 'Y' into cvar from t1 WHERE ROWNUM=1; --这里访问了trigger 本表
7 end;
8 /
Trigger createdSQL> insert into t1 values (1,'a');
ORA-04091: table TEST.T1 is mutating, trigger/function may not see it
ORA-06512: at "TEST.TRI_T1", line 4
ORA-04088: error during execution of trigger 'TES.TRI_T1'SQL> insert into t1 select '1','a' from dual;
ORA-04091: table TEST.T1 is mutating, trigger/function may not see it
ORA-06512: at "TEST.TRI_T1", line 4
ORA-04088: error during execution of trigger 'TEST.TRI_T1'2、对于before 类型的 for each row 级别的triggers,如果使用 insert into ... values 语句触发此trigger ,则在trigger 中访问本table没有问题;
但如果使用 insert into select .. from 语句触发此trigger ,则在trigger 中访问本table就报ora-04091错误;
只有在Oracle 7标准的开发文档中有这样的说明:
From the Application Developers Guide
"There is an exception to this restriction;
For single row INSERTs, constraining tables are mutating for
AFTER row triggers, but not for BEFORE row triggers.
INSERT statements that involve more than 1 row are not considered
single row inserts."
"INSERT INTO <table_name> SELECT ..." are not considered single row
inserts, even if they only result in 1 row being inserted.测试如下:
SQL> drop trigger tri_t1;
Trigger droppedSQL> insert into t1 values (1,'a'); --先插入一条数据,避免ORA-01403: no data found 错误。
1 row inserted
SQL> commit;SQL> create or replace trigger tri_t1
2 before insert on t1 for each row
3 declare
4 cvar varchar2(10);
5 begin
6 select 'Y' into cvar from t1 WHERE ROWNUM=1;
7 end;
8 /
Trigger createdSQL> insert into t1 values (2,'b'); -- insert into ... values 没有问题
1 row insertedSQL> insert into t1 select '3','c' from dual; -- insert into ... select .. from 报错
ORA-04091: table TEST.T1 is mutating, trigger/function may not see it
ORA-06512: at "TEST.TRI_T1", line 4
ORA-04088: error during execution of trigger 'TEST.TRI_T1'我们的开发人员因为不知道这个特别情况,近日在修改一个存储过程时候,将原来的insert values 写法改成了insert select 写法,而trigger 又是before类型的,导致出现了ORA-04091错误,搞得分析了好久也没有头绪。其实,在metalink中有一篇note说到了:
文档 ID: 注释:132569.1
主题: ORA-4091 on BEFORE ROW TRIGGER with INSERT statement
类型: PROBLEM
状态: PUBLISHED
内容类型: TEXT/X-HTML
创建日期: 16-JAN-2001
上次修订日期: 09-AUG-2004 Problem Description
-------------------You want to do an insert into a table that has a BEFORE row Trigger.When you hard code the values into the INSERT statement, the trigger works fine.For example:INSERT
INTO content (cont_name,cont_seg,cat_seq)
VALUES('blah',100,200);1 row created.However, your trigger errors with ERROR ORA-4091 with
INSERT INTO...select statement:INSERT
INTO content (cont_name,cont_seq,cat_seq) (select....from category);ERROR at line 1:
ORA-4091: table <schema>.CONTENT is mutating, trigger/function may not see it
ORA-6512: at "<schema>.INS_CONTENT", line 4
ORA-4088: error during execution of trigger '<schema>.INS_CONTENT'
TRIGGER:CREATE OR REPLACE trigger INS_CONTENT
BEFORE INSERT on CONTENT
FOR EACH ROW
DECLARE
max_sort number;
BEGIN
SELECT max(cont_sort) INTO max_sort FROM CONTENT;
IF max_sort IS NOT NULL AND max_sort!= 99999 THEN
IF :new.cont_sort IS NULL THEN
:new.cont_sort := max_sort +1;
END IF;
END IF;
SELECT SEQ_CONT_SEQ.nextval INTO :new.CONT_SEQ from dual;
END;
Explanation
-----------Error: ORA 4091
Text: table %s.%s is mutating, trigger/function may not see it
-------------------------------------------------------------------------------
Cause: A trigger (or a user defined PL/SQL function that is referenced in
this statement) attempted to look at (or modify) a table that was
in the middle of being modified by the statement which fired it.Action: Rewrite the trigger (or function) so it does not read that table.Explanation:
You cannot look at or modify the table that is mutating.Note:
From the Application Developers Guide
"There is an exception to this restriction;
For single row INSERTs, constraining tables are mutating for
AFTER row triggers, but not for BEFORE row triggers.
INSERT statements that involve more than 1 row are not considered
single row inserts." "INSERT INTO <table_name> SELECT ..." are not considered single row
inserts, even if they only result in 1 row being inserted.
RELATED DOCUMENTS
-----------------Oracle Application Developer's Guide (A68003-01)
Chapter 'Using Database Triggers', page 13-22)
1.尝试一下不要使用行级触发器,使用语句级触发器。
2. 如果1不行,那么新建一个包变量(用来做全局变量),把:new.pk_auto_id存入,然后insert时候,直接是用where pk_auto_id=package.变量来试一下。有问题站内信。
我把删除那句sql去掉了,还是报一样的错误啊!
我才测试楼主的update触发了楼主贴出代码的触发器,这个触发器的更新语句又出发了其他的触发器,最后再FAQ.REP_INDEX_LUCENE_U_TRIG中的FAQ.JAVA_UPD_CHECK_REPOSITORY_PRO里产生了错误。
请楼主再查一查!
CREATE OR REPLACE TRIGGER rep_index_lucene_u_trig AFTER update ON FAQ.T_REPOSITORY
FOR EACH ROW
BEGIN
delete from t_repository_index where pk_auto_id=:old.PK_AUTO_ID;
insert into t_repository_index(pk_auto_id,uk_file_id,title,content,type,level_id,post_user_name,update_time,OPE_CODE,annex,key_word)
values(
:new.PK_AUTO_ID, :new.UK_FILE_ID,
:new.TITLE, :new.CONTENT,
:new.TYPE, :new.LEVEL_ID,
nvl((select C.REAL_NAME from T_SYS_USER c where c.user_id=:new.FK_POST_USER_ID and rownum=1),'管理员'),
nvl(:new.UPDATE_TIME,sysdate),
:new.STATUS,
(select replace(wmsys.wm_concat(B.ANNEX_PATH),',','|') from T_REPOSITORY_ANNEX B where B.FK_REPOSITORY_ID=:new.Pk_Auto_Id),
:new.Key_Word
);
END; 因为触发器会索引所依赖的表,因此你不能用select form T_REPOSITORY 来查询,但是我看到你原来触发器的查询条件是where pk_auto_id=:new.pk_auto_id,这样的话你可以用:new.colum来取值啊, 这样对本表的数据不久搞定了吗?楼主可以去试试我给的sql脚本,是不是你想要的效果?
以及 (select replace(wmsys.wm_concat(B.ANNEX_PATH),',','|') from T_REPOSITORY_ANNEX B where B.FK_REPOSITORY_ID=:new.Pk_Auto_Id),这个列是牵涉到取别的关联表的数据。
如果楼主有的话可以参考。我没有测试过,只是打个比方,因为没有环境啊!