Before Trigger in Discoverer 10.1.2

Hi,
Can any one help me how to build before trigger report in Discoverer. there is a function which internally calling a procedure which has parameters like process_id,organization_name,Gre,start_date,end_date. This process_id will be generated based on a sequence. So, how to pass value for the process_id parameter from Desktop Edition.
example:-
function a(process_id ,start_date,end_date..etc)
procedure(process_id ,start_date,end_date..etc)
insert into temp_table values(process_id,start_date,end_date,etc);
end function a;
In Desktop we created a workbook worksheet we called this function in calculation tab.It has to insert some rows into temp_table and we will create second sheet on this temp_table.
The problem we are facing is we are not able to pass sequence.nextvalue as default value for a parameter. Please suggest.
Thanks inadvance,
Ch.Hanuman Prasad

Hi,
There is no before report trigger. You may be able to use a logon trigger.
It sounds as though you may want to investigate using database contexts as session parameters which can be set by a workbook or at logon and remain for the duration of the DIscoverer session. Look at these posts for more details:
Re: Passing multiple parameters into Custom Folder...
Re: Parameters in SubQuery
Re: Passing Parameters to a discoverer folder using Note 282249.1
Rod West

Similar Messages

I need to pass null as a default value for a parameter in Before Trigger

Hi All,
I am using Before trigger function in calculation tab which has some set of parameters.So, I accept some parameters which are passed to this Before Trigger function and need these parameters default value as null.
To be clear I want to set the Default value for a parameter in workbook to be NULL and pass the same to the calling Function.
please help me.
Thanks in advance

Hi All,
I am using Before trigger function in calculation tab which has some set of parameters.So, I accept some parameters which are passed to this Before Trigger function and need these parameters default value as null.
To be clear I want to set the Default value for a parameter in workbook to be NULL and pass the same to the calling Function.
please help me.
Thanks in advance

Before trigger

How i can reference to variable that i´m inserting into database?
I want create "before trigger" which check if inserting date isn´t bigger than sysdate.
Thanks

This assumes a table name T and a column named date_column. It raises an error if the supplied date is in the future.
create or replace trigger t_trg
before insert on t
for each row
begin
if :new.date_column > sysdate then
raise_application_error(-20000, 'Invalid date');
end if;
end;
/

Avoid insertion by before trigger

Hi all!
I want to avoid an insertion to a table based on certain conditions.
So I thought I could use a BEFORE trigger. Unfortunately, I don't find a way to avoid it. I can declare a trigger, fetch the conditional information, but whats the command to avoid it?
Maybe I simply overread it, so if someone could give me a hint, I would be very thankful.
regards, Alex

Raise an error

Using a sequence inside BEFORE TRIGGER

Hi all,
I just created a testtable and a sequence to use as a primary key column value for that table.
I tried to create a BEFORE INSERT trigger on that table and in the trigger i tried to set up the primary key column value using the sequence
but while compiling i am getting the error "Error(9,30): PLS-00357: Table,View Or Sequence reference 'SEQ_OF_TESTTABLE.NEXTVAL' not allowed in this context"
My Version:Oracle Database 10g Express Edition Release 10.2.0.1.0 - Product
All the objects created with the same user. I would appraciate any help, thanks all
EDIT
I solved the problem using the below
create or replace
TRIGGER Bef_Ins_On_Testtable
BEFORE INSERT ON TestTable
FOR EACH ROW
declare
ntemp_id INT;
BEGIN
SELECT SEQ_OF_TESTTABLE.NEXTVAL INTO ntemp_id FROM DUAL ;
DBMS_OUTPUT.PUT_LINE('İNSERTED');
:NEW.VSURNAME := 'HAKKİ' ;
:NEW.NID := ntemp_id;
END;But i wonder why i can use the sequence(just as seqeunce_name.NEXTVAL) in INSERT statement and why cant in trigger?
Edited by: user9371286 on 31.Tem.2010 04:15
Edited by: user9371286 on 31.Tem.2010 04:21
Edited by: user9371286 on 31.Tem.2010 04:27

Please post your trigger code and your database version ( the result of: select * from v$version; ).
Put it between tags, so your example will stay formatted.
(see: http://forums.oracle.com/forums/help.jspa for more examples regarding tags)
"PLS-00357: Table,View Or Sequence reference "string" not allowed in this context
    Cause: A reference to database table, view, or sequence was found in an inappropriate context. Such references can appear only in SQL statements or (excluding sequences) in %TYPE and %ROWTYPE declarations. Some valid examples follow: SELECT ename, emp.deptno, dname INTO my_ename, my_deptno, my_dept .FROM emp, dept WHERE emp.deptno = dept.deptno; DECLARE last_name emp.ename%TYPE; dept_rec dept%ROWTYPE;
    Action: Remove or relocate the illegal reference."
+http://download.oracle.com/docs/cd/B19306_01/server.102/b14219/plsus.htm#sthref13592+
You can find examples of triggers referring to sequences here, by doing a search on this forum or:
http://download.oracle.com/docs/cd/B19306_01/appdev.102/b14251/adfns_triggers.htm#ABC1032282

Oracle Reports with PL/SQL package in before Trigger

I have an oracle report which is set to run as a concurrent program in Oracle Apps. My before report trigger calls a pl/sql package. I am debating using errbuf and retcode, since I have not defined the pl/sql package as a concurrent program. But if I do add errbuf and retcode to the pl/sql package parameters, how do I call them in the trigger.
function BeforeReport return boolean is
begin
delete from XXDK_SAMS2_MEAN_RATIO;
delete from XXDK_SALES_RATIO_TOTALS;
commit;
XXDK_SAMS2_SALES_RATIO_RPT_PKG.INSERT_SALES*(:errbuf, :retcode*, :neighborhood, :salefrom, :saleto, :verfrom, :verto, :tax,
:deed1, :deed2, :deed3, :tran1, :tran2, :tran3, :accnttype);
return (TRUE);
end;
And do I add errbuf and ret code as paramters in the registered setup?

Hi,
please see if the code in these documents help.
Note: 73492.1 - Creating a PL/SQL Concurrent Program in Oracle Applications
Note: 221542.1 - Sample Code for FND_SUBMIT and FND_REQUEST API's
Regards,
Hussein

How to acquire and read data before trigger?

Hi, all:
I want to acquire a impluse signal, and the data when the signal begins is very important to me. So, I want to using a digStart trigger to acquire it, but then i'll lose what i want, maybe i can acquire it continuously, and use the trigger to start read the buffer after a delay(in order to wait the signal end), i don't know if there is any ANSI C functions I can use to do it in this way. I am using PCI6220, DAQmx9.02 and ANSI C. If anyone have some info on this please let me know. thinks.

Hi Cris Brown:
From your application,I suggest that you can use DAQmxCfgDigEdgeRefTrig function; define pretrigger samples fitting for your application.
Try it. Best Regard!

BEFORE UPDATE Trigger

Hi,
I'm looking for a solution to find out which columns are set in the update-statement inside a before update trigger. Can someone give me a hint?!
What I want to do:
I want to ensure that an update-statement for a special table always include attribute "XXX". To declare this attribute as "not null" is useless, because it is set correctly at insert. To compare the new value against the old value in a before update trigger isn't possible because the new value can be the same as the old value.
I'm using Oracle 8i.

There is no need to use two triggers and a temporary table where a simple insert from the before trigger will do the job.
You can just insert the :old.column values straigth into a history table within the before update trigger though I would prefer to use an after update trigger. Nevertheless, both the insert into history and the update will be part of one transaction so the two action will commit or rollback together:
UT1 > create or replace trigger marktest_bu
2 before update on marktest
3 for each row
4 begin
5 insert into marktest_hist
6 values (:old.fld1, :old.fld2, :old.fld3, :old.fld4);
7 end;
8 /
Trigger created.
UT1 > select * from marktest_hist;
no rows selected
UT1 > update marktest set fld1 = 'trigtest2'
2 where fld1 = 'trigtest';
1 row updated.
UT1 > select * from marktest_hist;
FLD1 FLD2 FLD3 FLD4
trigtest 9 28-MAY-04 trigtest
IMHO -- Mark D Powell --

Trigger time before or after

i did find any real difference between after and before trigger for example
1 create or replace trigger moh after insert on emp
2 begin if to_char(sysdate,'DY') in('SAT') then
3
4 raise_application_error(-20500,'test');
5 end if;
6* end;
SQL> /
Trigger created.
1 create or replace trigger moh before insert on emp
2 begin if to_char(sysdate,'DY') in('SAT') then
3
4 raise_application_error(-20500,'test');
5 end if;
6* end;
SQL> /
Trigger created.
In the two triggers the insert is prevented if the day is saturday if i use before insert or if i use after insert, so what is the difference then????

SQL> create trigger test_emp
2 before insert on emp
3 for each row
4 begin
5 :new.ename := upper(:new.ename) ;
6 end ;
7 /
Trigger created.
SQL> create trigger test_emp_after
2 after insert on emp
3 for each row
4 begin
5 :new.ename := upper(:new.ename) ;
6 end ;
7 /
create trigger test_emp_after
ERROR at line 1:
ORA-04084: cannot change NEW values for this trigger type
SQL>

Difference between before and after trigger

    Is there any difference between these two trigger .
    If its there , then please tell when we should use before trigger and after trigger
   thanx
   young bro


BEFORE Triggers
BEFORE triggers run the trigger action before the triggering statement is run. This type of trigger is commonly used in the following situations:
When the trigger action determines whether the triggering statement should be allowed to complete. Using a BEFORE trigger for this purpose, you can eliminate unnecessary processing of the triggering statement and its eventual rollback in cases where an exception is raised in the trigger action.
To derive specific column values before completing a triggering INSERT or UPDATE statement.
AFTER Triggers
AFTER triggers run the trigger action after the triggering statement is run.
Trigger Type Combinations
Using the options listed previously, you can create four types of row and statement triggers:
BEFORE statement trigger
Before executing the triggering statement, the trigger action is run.
BEFORE row trigger
Before modifying each row affected by the triggering statement and before checking appropriate integrity constraints, the trigger action is run, if the trigger restriction was not violated.
AFTER statement trigger
After executing the triggering statement and applying any deferred integrity constraints, the trigger action is run.
AFTER row trigger
After modifying each row affected by the triggering statement and possibly applying appropriate integrity constraints, the trigger action is run for the current row provided the trigger restriction was not violated. Unlike BEFORE row triggers, AFTER row triggers lock rows.
You can have multiple triggers of the same type for the same statement for any given table. For example, you can have two BEFORE statement triggers for UPDATE statements on the employees table. Multiple triggers of the same type permit modular installation of applications that have triggers on the same tables. Also, Oracle materialized view logs use AFTER row triggers, so you can design your own AFTER row trigger in addition to the Oracle-defined AFTER row trigger.
You can create as many triggers of the preceding different types as you need for each type of DML statement, (INSERT, UPDATE, or DELETE).
S

Discoverer Desktop crash

When trying to open a report created by a colleague, Discoverer immediately throws a Windows (Vista 32Bit) error that "Oracle Discoverer Desktop has stopped working". I click close program, and Discoverer closes. It's a very simple report so I recreated it yesterday, ran it fine, could change parameters for different outputs, no problems. This morning I log in and when trying to open the newly created report from yesterday, same error. No exception, no memory pointers, nothing, just the Win error that it has stopped working.
Anyone seen this before? Running Discoverer Desktop v 10.1.2.3 Client v 10.1.2.55.26.

My colleague was able to open and modify the report that I created without issue so I suspect the report is alright, perhaps my installation? Odd that I can run many other reports just fine in the same environment and that this one ran fine from development, but as soon as I closed it to reopen, no luck.

How to get the ROWID in a Trigger?

On Oracle Database 10g Enterprise Edition Release 10.2.0.2.0 - 64bit when I try below script I always get the same Rowid as "AAAAAAAAAAAAAAAAAA". Is this normal?
Thank you.
create table testrowid (a number );
create or replace trigger testrowidbins
before insert on testrowid for each row
begin
dbms_output.put_line( 'Rowid:= ' || :new.rowid );
end;
set serveroutput on
insert into testrowid values( 1 );
insert into testrowid values( 2 );
insert into testrowid values( 3 );
rollback ;
insert into testrowid values( 1 );
insert into testrowid values( 2 );
insert into testrowid values( 3 );
commit ;
insert into testrowid values( 1 );
insert into testrowid values( 2 );
insert into testrowid values( 3 );
rollback ;

Well, it was more of a rhetorical question.
Rowid is the physical location of a row in a table. During the execution of a BEFORE trigger, the row has not yet been placed in the table hence the 'AAAAA' rowid.
During your AFTER trigger, the row exists in the table and therefore has a normal rowid.

Creating a BC4J EO Based on Stored Proc w/DB assigned PK using Seq/Trigge

BC4J Code-o-philes;
Using Steven Muench article "Creating a BC4J Entity Object Based on Stored Procedures" (HOWTO: Basing BC4J Entity on Stored Procedure as a starting point, I would like to modify that example to use a Stored Procedure where the Primary Keys of the Department Table are assigned by a DB Sequence/Before trigger. I already have the stored procedure and sequence/trigger working fine in SQL*Plus.
The assumption I have is that code below needs to be modified, but I'm not sure exactly what need to be done to retreive the DB assigned PK.
Lastly, I think that JDeveloper should be doing this automatically, maybe next release?
Bill G...
void handleStoredProcInsert() {
CallableStatement st = null;
try {
String stmt = "BEGIN hr.do_insert(?,?,?); END;";
DBTransaction tr = getDBTransaction();
st = tr.createCallableStatement(stmt,1);
/* st.setLong(1,getDepartmentId().longValue()); */
st.registerOutParameter(3,Types.NUMERIC);
if (getDepartmentName() != null) {
st.setString(1,getDepartmentName());
else {
st.setNull(1,Types.VARCHAR);
if (getLocationId() != null) {
st.setLong(2,getLocationId().longValue());
else {
st.setNull(2,Types.VARCHAR);
int rows = st.executeUpdate();
Long newId = new Long(st.getLong(3));
populateAttributeAsChanged(DEPARTMENTID, new DBSequence(newId));
catch (SQLException s) {
throw new JboException(s);
finally {
try {
if (st != null) st.close();
catch (SQLException s) { /* ignore */}

ARGHHHHHHHHHHHHHH!
I've change the line
st.setLong(1,getDepartmentId().longValue());
to
st.setLong(1,getSequenceNumber().longValue());
And I'm still getting Error(303,20): method getSequenceNumber not found in class stproc.DepartmentsImpl.
even though i've imported "oracle.jbo.domain.DBSequence;"
The code below is taken from the BC4J StoredProc sample and is what I want to modify to get it working with DB/Triggers.
BG...
package stproc;
import java.math.BigDecimal;
import java.lang.Math;
import java.sql.CallableStatement;
import java.sql.SQLException;
import java.sql.Types;
import oracle.jbo.JboException;
import oracle.jbo.Key;
import oracle.jbo.RowInconsistentException;
import oracle.jbo.RowIterator;
import oracle.jbo.domain.Number;
import oracle.jbo.server.AttributeDefImpl;
import oracle.jbo.server.DBTransaction;
import oracle.jbo.server.EntityDefImpl;
import oracle.jbo.server.EntityImpl;
import oracle.jbo.server.TransactionEvent;
import oracle.jbo.AlreadyLockedException;
import oracle.jbo.domain.DBSequence;
// --- File generated by Oracle Business Components for Java.
public class DepartmentsImpl extends EntityImpl
protected static final int DEPARTMENTID = 0;
protected static final int DEPARTMENTNAME = 1;
protected static final int LOCATIONID = 2;
private static EntityDefImpl mDefinitionObject;
* This is the default constructor (do not remove)
public DepartmentsImpl()
* Retrieves the definition object for this instance class.
public static synchronized EntityDefImpl getDefinitionObject()
if (mDefinitionObject == null)
mDefinitionObject = (EntityDefImpl)EntityDefImpl.findDefObject("stproc.Departments");
return mDefinitionObject;
* Gets the attribute value for DepartmentId, using the alias name DepartmentId
public DBSequence getDepartmentId()
return (DBSequence)getAttributeInternal(DEPARTMENTID);
* Sets <code>value</code> as the attribute value for DepartmentId
public void setDepartmentId(DBSequence value)
setAttributeInternal(DEPARTMENTID, value);
* Gets the attribute value for DepartmentName, using the alias name DepartmentName
public String getDepartmentName()
return (String)getAttributeInternal(DEPARTMENTNAME);
* Sets <code>value</code> as the attribute value for DepartmentName
public void setDepartmentName(String value)
setAttributeInternal(DEPARTMENTNAME, value);
* Gets the attribute value for LocationId, using the alias name LocationId
public Number getLocationId()
return (Number)getAttributeInternal(LOCATIONID);
* Sets <code>value</code> as the attribute value for LocationId
public void setLocationId(Number value)
setAttributeInternal(LOCATIONID, value);
// Generated method. Do not modify.
protected Object getAttrInvokeAccessor(int index, AttributeDefImpl attrDef) throws Exception
switch (index)
case DEPARTMENTID:
return getDepartmentId();
case DEPARTMENTNAME:
return getDepartmentName();
case LOCATIONID:
return getLocationId();
default:
return super.getAttrInvokeAccessor(index, attrDef);
// Generated method. Do not modify.
protected void setAttrInvokeAccessor(int index, Object value, AttributeDefImpl attrDef) throws Exception
switch (index)
case DEPARTMENTID:
setDepartmentId((DBSequence)value);
return;
case DEPARTMENTNAME:
setDepartmentName((String)value);
return;
case LOCATIONID:
setLocationId((Number)value);
return;
default:
super.setAttrInvokeAccessor(index, value, attrDef);
return;
protected void doSelect(boolean lock) {
if (lock) {
this.handleStoredProcLock();
else {
this.handleStoredProcSelect();
public void doDML(int operation, TransactionEvent e) {
switch (operation) {
case DML_INSERT: {
handleStoredProcInsert();
break;
case DML_UPDATE: {
handleStoredProcUpdate();
break;
case DML_DELETE: {
handleStoredProcDelete();
break;
void handleStoredProcSelect() {
CallableStatement st = null;
try {
String stmt = "BEGIN hr.do_select(?,?,?); END;";
DBTransaction tr = getDBTransaction();
st = tr.createCallableStatement(stmt,1);
/* st.setLong(1,getDepartmentId().longValue()); */
st.registerOutParameter(2,Types.VARCHAR);
st.registerOutParameter(3,Types.NUMERIC);
int rows = st.executeUpdate();
populateAttribute(DEPARTMENTNAME,st.getString(2),true,false);
populateAttribute(LOCATIONID,st.getBigDecimal(3),true,false);
catch (SQLException s) {
throw new JboException(s);
finally {
try {
if (st != null) st.close();
catch (SQLException s) { /* ignore */}
void handleStoredProcDelete() {
CallableStatement st = null;
try {
String stmt = "BEGIN hr.do_delete(?); END;";
DBTransaction tr = getDBTransaction();
st = tr.createCallableStatement(stmt,1);
/* st.setLong(1,getDepartmentId().longValue()); */ // bg mod
st.registerOutParameter(1,Types.NUMERIC); // bg add
int rows = st.executeUpdate();
catch (SQLException s) {
throw new JboException(s);
finally {
try {
if (st != null) st.close();
catch (SQLException s) { /* ignore */}
void handleStoredProcInsert() {
CallableStatement st = null;
try {
String stmt = "BEGIN hr.do_insert(?,?,?); END;";
DBTransaction tr = getDBTransaction();
st = tr.createCallableStatement(stmt,1);
/* st.setLong(1,getDepartmentId().longValue()); */ // bg mod
st.registerOutParameter(3,Types.NUMERIC);
if (getDepartmentName() != null) {
st.setString(1,getDepartmentName());
else {
st.setNull(1,Types.VARCHAR);
if (getLocationId() != null) {
st.setLong(2,getLocationId().longValue());
else {
st.setNull(2,Types.VARCHAR);
int rows = st.executeUpdate();
Long newId = new Long(st.getLong(3));
populateAttributeAsChanged(DEPARTMENTID, new DBSequence(newId));
catch (SQLException s) {
throw new JboException(s);
finally {
try {
if (st != null) st.close();
catch (SQLException s) { /* ignore */}
void handleStoredProcUpdate() {
CallableStatement st = null;
try {
String stmt = "BEGIN hr.do_update(?,?,?); END;";
DBTransaction tr = getDBTransaction();
st = tr.createCallableStatement(stmt,1);
/* st.setLong(1,getDepartmentId().longValue()); */ // bg mod
/* dbSeqVal.getSequenceNumber().longValue() */
st.setLong(1,getSequenceNumber().longValue());
if (getDepartmentName() != null) {
st.setString(2,getDepartmentName());
else {
st.setNull(2,Types.VARCHAR);
if (getLocationId() != null) {
st.setLong(3,getLocationId().longValue());
else {
st.setNull(3,Types.VARCHAR);
int rows = st.executeUpdate();
catch (SQLException s) {
throw new JboException(s);
finally {
try {
if (st != null) st.close();
catch (SQLException s) { /* ignore */}
void handleStoredProcLock() {
CallableStatement st = null;
try {
String stmt = "BEGIN hr.do_lock(?,?,?); END;";
DBTransaction tr = getDBTransaction();
st = tr.createCallableStatement(stmt,1);
/* st.setLong(1,getDepartmentId().longValue()); */ // bg mod
st.registerOutParameter(2,Types.VARCHAR);
st.registerOutParameter(3,Types.NUMERIC);
int rows = st.executeUpdate();
String newDname = st.getString(2);
BigDecimal newLoc = st.getBigDecimal(3);
// Compare the old values to the current values to
// detect if row has changed.
compareOldAttrTo(DEPARTMENTNAME,newDname);
compareOldAttrTo(LOCATIONID,newLoc);
catch (SQLException s) {
if (Math.abs(s.getErrorCode())==54) {
throw new AlreadyLockedException(s);
else {
throw new JboException(s);
finally {
try {
if (st != null) st.close();
catch (SQLException s) { /* ignore */}
void compareOldAttrTo(int slot, Object newVal) {
if ((getPostedAttribute(slot) == null && newVal != null) ||
(getPostedAttribute(slot) != null && newVal == null) ||
(getPostedAttribute(slot) != null && newVal != null &&
!getPostedAttribute(slot).equals(newVal))) {
throw new RowInconsistentException(createPrimaryKey(getDepartmentId()));
* Creates a Key object based on given key constituents
public static Key createPrimaryKey(DBSequence departmentId)
return new Key(new Object[] {departmentId});
}

Before and after triggers

just can somebody clarify
when we say
create or replace trigger tn before/after insert/update/delete for each row/statement
i just want to know what i can do with a before trigger which i cannot do with a after trigger and viceversa

<BLOCKQUOTE><font size="1" face="Verdana, Arial, Helvetica">quote:</font><HR>Originally posted by sushant prabhu:
i just want to know what i can do with a before trigger which i cannot do with a after trigger and viceversa<HR></BLOCKQUOTE>
Before row triggers can modify column values (:new.column := value) before the row is originally written to disk. I don't think after row triggers can modify :new values. Before row triggers can't see the row's rowid, at least not for inserts, but after row triggers always can.
Statement triggers can modify the triggering table, but row triggers can't. Statement triggers can't tell what rows are touched, but row triggers are called once per row touched and can see :old and :new values for that row.
null

Inserting Records In A Trigger

Greetings,
I have a table which has a trigger that calls a stored procedure
to insert additional records into the same table. One trigger
is set after each row for insert/update/delete . The before
trigger calls another proc to populate a global pl/sql table for
the insert in the after trigger. All is okay except for the
insert of the additional record. The original record which
invoked the trigger sequence is sucessfully created, but the
addition record that the triggers create does not.
I Encounter an error on the insert withing a proc called by the
after trigger:
-4091: ORA-04091: table SPINTEK.ST_LGEN_RELATION is mutating,
trigger/function may not see it.
How can I create a record in a table via an after trigger while
another record is also being inserted?
Cheers and Happy Holidays.
Marcel Sammut
[email protected]

You can't.
Just think about it for a minute - if you have a trigger that
fires after an INSERT, and that trigger attempts to perform
another INSERT on the same table, then when what would prevent
an infinite cascade of INSERTs from occurring?
That's why you can't perform DML on a table in (or from) a
trigger on the same table.

Before Trigger in Discoverer 10.1.2

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