A Database Trigger Calling an Oracle Procedure which in turn calls a Java functi

A Database Trigger Calling an Oracle Procedure which in turn calls a Java function
Hi,

I am having an error in A Database Trigger Calling an Oracle Procedure which in turn calls a Java function....any body can help.

JAVA FUNCTION:
import java.sql.*;
import java.io.*;

public class Insert{
public String putsData(String szApplData)throws SQLException{
{
System.out.println("Entering the function inside java");
Connection conn = DriverManager.getConnection("jdbc:default:connection:");

String szQry="INSERT INTO TESTUSER.TRN_APPL_REQUESTS@.MAINLINK(ID_REQUEST, ID_RESULT, ST_REQUEST, DT_INSERT,ID_APPLICATION,ID_FE,FLAG_GET,ID_FUNCTIO
N,NO_SEMCALL,SEQ_REQUEST) VALUES ("+"'"+szApplData.substring(0,1)+"','"+szApplData.substring(1,3)+"','000',SYSDATE,'"+(szApplData.substring(30,46)).trim()+"','"+(szApplData.substring(46,50)).trim()+"',"+"'"+ (szApplData.substring(53,54)).trim() +"'"+",'"+ (Double.valueOf(szApplData.substring(54,57))).doub leValue() +"'"+",'"+ (Double.valueOf(szApplData.substring(57,59))).doub leValue() +"'"+",SEQ_REQUEST.CURRVAL)";
try {
PreparedStatement pstmt = conn.prepareStatement(szQry);
pstmt.executeUpdate();
pstmt.close();
} catch (SQLException e) {System.err.println(e.getMessage());}

return szQry;

}
}
public String overrideInsert(String szApplData) {

String szOverride ="INSERT INTO TRN_OVERRIDE (SEQ_REQUEST, ID_FE,DT_OVERRIDE,USER_OVERRIDE,DESC_REASON,FLAG_A
CCEPTANCE,DT_ACCEPTANCE,SEQ_OVERRIDE ) VALUES ('"+szApplData.substring(4,14)+"','"+ szApplData.substring(63,67)+"',TO_DATE('"+szApplData.substring(67,75)+"','DD/MM/YYYY'),'"+ szApplData.substring(75,125)+"','"+ szApplData.substring(125,225)+"','"+ szApplData.substring(225,226)+"',TO_DATE('"+szApplData.substring(226,234)+"','DD/MM/YYYY'),SEQ_OVERRIDE.NEXTVAL)";

return szOverride ;
}
}

ORACLE PROCDURE WHICH CALLS THE JAVA:
create or replace procedure TESTINSERT1(szApplData in varchar2) as language java
name 'Insert.putsData(String)';

DATABASE TRIGGER:

1 create or replace trigger TRIG_REMOTE
2 AFTER INSERT ON TRN_APPL_REQUESTS
3 FOR EACH ROW
4 declare
5 szApplData varchar2(5000);
6 Result varchar2(5000);
7 my_sqlerrm VARCHAR2(150);
8 PRAGMA AUTONOMOUS_TRANSACTION;
9 Begin
10 dbms_output.put_line('Inside Begin');
11 szApplData = '123456789012345678901234567890abcdefghijklmn10FE1
F111111221234567891234567891234567891234';
12 dbms_output.put_line('After Assigning SZApplData');
13 call TESTINSERT1(szApplData);
14 dbms_output.put_line('After Select Statement :'||result);
15 commit;
16 exception when others then
17 my_sqlerrm := SUBSTR(SQLERRM,1,150);
18 dbms_output.put_line('Oracle Error Message :'||my_sqlerrm);
19* End;

ERROR ENCOUNTERED:
Errors for TRIGGER TRIG_REMOTE:

LINE/COL ERROR
--- --------------------
8/13 PLS-00103: Encountered the symbol "=" when expecting one of the
following:
:= . ( @. % ;
The symbol ":= was inserted before "=" to continue.

10/7 PLS-00103: Encountered the symbol "TESTINSERT1" when expecting
one of the following:
:= . ( @. % ;
The symbol ":=" was substituted for "TESTINSERT1" to continue.Hello,

it must be
szApplData := '123456789012345678901234567890abcdefghijklmn10FE1

in line 11

Hope this helps.

Greetings

Manfred Peter
(Alligator Company)
http://www.alligatorsql.com|||Originally posted by alligatorsql.com
Hello,

it must be
szApplData := '123456789012345678901234567890abcdefghijklmn10FE1

in line 11

Hope this helps.

Greetings

Manfred Peter
(Alligator Company)
http://www.alligatorsql.com

Hello ,

Thanks for the Reply..It was rectified..and Trigger created successfully.
when i try to insert a record for testing purpose..I am getting as below
iN THE DB TRIGGER I have given messages and when executing the procedure it is failing ...need help Pls ...Thanks

SQL> @.insert
Inside Begin
After Assigning SZApplData
Oracle Error Message :ORA-29531: no method putsData in class Insert

1 row created.
:)|||Hello,

could it be, that the problem is the prototype
public String putsData(String szApplData)throws SQLException{

You define a return value, but you use a procedure for the java function, which can not send back variables

create or replace procedure TESTINSERT1(szApplData in varchar2) as language java name 'Insert.putsData(String)';

In my opionion, Oracle is looking for a method

void Insert.putsData(String)

Is that your problem ?

Greetings

Manfred Peter
(Alligator Company)
http://www.alligatorsql.com|||It is working fine now ...I have not changed anything in database Trigger but changed the procedure and java function as below.

Two reasons for not working:
(1)The way we call the java function thro oracle procedure.
(2)In the Java parameter declaration change from vector to String

The Corrected Procedure Calling Java:

OLD:

create or replace procedure TESTINSERT1(szApplData varchar2) as language java
name 'Insert.putsData(String)';

NEW:
create or replace procedure TESTINSERT1(szApplData varchar2) as language java
name 'Insert.putsData(java.lang.String)';


Thanks for the Quick Responses from MANFRED PETER and BRICKLEN thro db forum for looking it in other angle in finding the solution.|||You are welcome

Manfred Peter
(Alligator Company)
http://www.alligatorsql.com

6.5 reasons for slow inserts and blocking

Hallo!

I have a table in sql 6.5SP5a with 2`130`698 rows. The table has a primary
key on identity column and an insert trigger that updates the inserted row
according to some logic. Recently I've noticed that some amount of
intermittent blocking is occuring. It happens when the stored procedure that
inserts a new row in the table is receiving simultaneous calls. The
procedure looks something like this:

create procedure pr_insert_or_update
@.mode tinyint,
@.id int,
@.param1 int,
@.param2 datetime,
@.param3 varchar(3)

as

if @.mode=0
begin

insert into Table(column1, column2, column3, column4, column5)
values(param1, param2, param3, user_name(), host_name())

select @.@.identity as identity_column,
column_updated_by_the_trigger
from Table where identity_column=@.@.identity

end

else
begin

update table set column1=@.param1, column2=@.param2,
column3=@.param3, column4=user_name(), column5=host_name()
where identity_column=@.id

select @.id

end

The syprocesses waittype, status, and cmd entries for the suid at the head
of a blocking chain are usually 0x0000, runnable, and SELECT accordingly.
Although cmd is SELECT, DBCC OPENTRAN for the (user) database shows that the
oldest open transaction is "insert" and it belongs to the suid at the head
of a blocking chain. Also the exclusive blocking page locks are held.
I used the blocker script from Microsoft to gather this information. Still,
I'm stuck with finding out what is the cause of blocking since the waittype
is usually 0x0000 and DBCC PSS doesn't return any result in my case.

Any ideas on what could have caused/how to resolve blocking? Could it be
slow network when users are holding page locks for too long? Maybe I should
consider switching on "insert row lock" for the Table?

Many thanks!Two things come to mind.

1) It appears to me that you have a trigger on the table, column_updated_by_the_trigger, so the INSERT transaction is actually a couple of SQL statements linked together into 1 transaction. The INSERT plus any SQL statements within the trigger. So locks on the INSERT are being held until the trigger has been completed.

2) Once the trigger has completed, the statement will auto commit or auto rollback, I say this because I see no BEGIN TRAN, and I'm assuming the application that calls this has not issued it and you have the default settings, Implicit Transactions set to false.
So when the INSERT finishes and you have released the locks the next process that is in-line to execute the INSERT statement will happen, however the first process now will execute the SELECT, but will be locked out by the second process doing the INSERT.
Two options to solve this (a) Place a BEGIN TRAN prior to the INSERT and a COMMIT TRAN after the SELECT or (b) Place the hint (nolock) after the table name in the SELECT.