Help needed to solve "java.io.NotSerializableException: java.util.Vector$1"

hi to all,
i am using a session less bean A to querry a Entity Bean B , which inturns calls another EntityBean C ,
finally a ' find' method is invoked on the EntityBean C, In this a vector is created which holds 3 different vectors at different indexes, now the problem i am facing is that when Enity Bean B is returning the final vector to the A , it's firing out a errors that :-
TRANSACTION COULD NOT BE COMPLETED: RemoteException occurred in server thread;
ested exception is:
java.rmi.RemoteException: null; nested exception is:
java.rmi.ServerException: RemoteException occurred in server thread; ne
ted exception is:
java.rmi.RemoteException: null; nested exception is:
java.io.NotSerializableException: java.util.Vector$1
java.rmi.ServerException: RemoteException occurred in server thread; nested exc
ption is:
java.rmi.RemoteException: null; nested exception is:
java.rmi.ServerException: RemoteException occurred in server thread; ne
ted exception is:
java.rmi.RemoteException: null; nested exception is:
java.io.NotSerializableException: java.util.Vector$1
java.rmi.RemoteException: null; nested exception is:
java.rmi.ServerException: RemoteException occurred in server thread; ne
ted exception is:
java.rmi.RemoteException: null; nested exception is:
java.io.NotSerializableException: java.util.Vector$1
java.rmi.ServerException: RemoteException occurred in server thread; nested exc
ption is:
java.rmi.RemoteException: null; nested exception is:
java.io.NotSerializableException: java.util.Vector$1
java.rmi.RemoteException: null; nested exception is:
java.io.NotSerializableException: java.util.Vector$1
java.io.NotSerializableException: java.util.Vector$1
<<no stack trace available>>
ur any help would be highly appricated to solve out this prob.
If i try to iterate through this vector it's gives IOR:0232003x343242344asdsd................................................blabla....................
thanxs in adavance
Deepak

Hi I think you are using the method elements() in a remote method.
This method can't be Serializable!! Because it returns an Interface. Interfaces are never Serializable.
Regards,
Peter

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Thanks for the hint. Actually I must say once more that I was too tired that I have overseen a memeber field because of bad code layout :-( I better went to sleep...
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In my opinion a Serializable sub class with a super class which does not implement Serializable does not make sence, but as an accident I did it. What is the semantic in such a case? (At least I know it could not serialize the sub class as expected...)
Message was edited by:
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Yvonne Williams CS 130 2 HW 91
Yvonne Williams CS 130 2 HW 74
Yvonne Williams CS 130 2 HW 74
Yvonne Williams CS 130 2 Mi 92
Yvonne Williams CS 130 2 Fi 77
11 rows selected.
Select * from gpol where cno = 'CS 130' and csno= 2;
CNO CSNO GP PTAKEN D
CS 130 2 Final Exam 30
CS 130 2 Homework 20 Y
CS 130 2 Midterm Exam 20
CS 130 2 Participation 10
CS 130 2 Quiz 20 Y
here D= drop lowest. PTAKEN is the percentage taken. According to these 2 tables I have to drop the lowest score in HW and QZ and find the average of the remaining scores. After that according to the grading policy I have to calculate the grade points. Like this there are many courses and different grading policies.
Any help is really appreciated.
Thanks
Smitha

Hi Hoek and Frank,
Thnks for ur replies. I tried Hoek method also. It didn't work. let me tell u in detail with giving information about the tables used here. Plz hav pateince 2 read it.
1) create table student (
ID varchar2(7) not null,
sfname varchar2(20) not null,
slname varchar2(20) not null,
constraint id_pk primary key (ID)
I'm just displaying a part of output here
SQL> select * from student;
ID SFNAME SLNAME
CS00000 Jeff Runyan
CS00001 J. Landry
CS00002 Laetia Ension
CS00003 Z.A. Scrittorale
CS00004 Sarah Wilson
CS00005 Irv Dalvi
CS00006 Daniel Wicelinski
CS00007 Michael Carcia
CS00008 Roy Limate
CS00009 J. Segall
CS00010 Gerard Biers
2) create table section (
cno char(6) not null,
csno number(1) not null
check (csno<10),
slno char(3) not null
constraint sec_pk primary key (slno),
constraint cn_uk unique (cno, csno)
SQL> select * from section;
CNO CSNO SLN
CS 10 2 000
CS 20 2 001
CS 20 4 002
CS 20 7 003
CS 20 8 004
CS 25 1 005
CS 25 2 006
CS 25 3 007
CS 25 4 008
CS 25 5 009
CS 25 6 010
3) create table course (
cno char(6) not null,
descript varchar(40) not null,
cost number(8,2),
prereq char(6),
credit number(1) default '3' not null,
constraint cn_pk primary key (cno)
SQL> select * from course;
CNO DESCRIPT COST PREREQ CREDIT
CS 10 DP Overview 1195 3
CS 20 Intro to Computers 1195 3
CS 25 Intro to Programming 1195 CS 140 3
CS 80 Structured Programming Techniques 1595 CS 20 3
CS 100 Hands, On Windows 1195 CS 20 3
CS 120 Intro to Java Programming 1195 CS 80 3
CS 122 Intermediate Java Programming 1195 CS 120 3
CS 124 Advanced Java Programming 1195 CS 122 3
CS 125 JDeveloper 1195 CS 122 3
CS 130 Intro to Unix 1195 CS 20 3
CS 132 Basics of Unix Admin 1195 CS 130 3
4) create table activity (
AID char(2) not null,
activity varchar2(7) not null
check (activity in ('Final', 'Midterm', 'Project', 'PA', 'PA_1', 'PA_2', 'PA_3', 'PA_4’, 'PA_5', 'PA_6', 'PA_7', 'PA_8', 'PA_9', 'PA_10', 'PA_11', 'PA_12', 'HW', 'HW_1', 'HW_2', 'HW_3', 'HW_4', 'HW_5', 'HW_6', 'HW_7', 'HW_8’,
'HW_9', 'HW_10', 'QZ', 'QZ_1', 'QZ_2', 'QZ_3', 'QZ_4')),
constraint aid_pk primary key (AID)
AI ACTIVIT
00 Midterm
01 Project
02 QZ
03 QZ_1
04 QZ_2
05 QZ_3
06 QZ_4
07 PA
08 PA_1
09 PA_2
10 PA_3
5) create table studentrecord (
ID varchar2(7) not null,
slno char(3) not null,
aid char(2) not null,
marks number(3) not null
check (marks <= 100),
constraint idsr_fk foreign key (ID)
references student (ID) on delete set null,
constraint slsr_fk foreign key (slno)
references section (slno) on delete set null,
constraint aidsr_fk foreign key (AID)
references activity (AID) on delete set null
SQL> select * from studentrecor
ID SLN AI MARKS
CS00000 000 07 91
CS00000 000 03 76
CS00000 000 04 90
CS00000 000 05 83
CS00000 000 06 73
CS00000 000 21 76
CS00000 000 22 75
CS00000 000 23 98
CS00000 000 24 98
CS00000 000 00 76
CS00000 000 31 91
ID SLN AI MARKS
CS00001 001 07 91
CS00001 001 03 76
CS00001 001 04 90
CS00001 001 05 83
CS00001 001 06 73
CS00001 001 21 76
CS00001 001 22 75
CS00001 001 23 98
CS00001 001 24 98
CS00001 001 00 76
CS00001 001 31 91
Now I created a view based on these tables as
CREATE OR REPLACE VIEW std AS
SELECT sfname, slname, section.cno, csno, substr (activity, 1, 2) as activity, marks FROM student, studentrecord, section, course, activity WHERE student.id= studentrecord.id and studentrecord.slno = section.slno and section.cno = course.cno and studentrecord.aid = activity.aid ;
6) create table gp (
gpno char(2) not null,
gp varchar2(13) not null
check (gp in ('Final Exam', 'Midterm Exam', 'Project', 'Participation', 'Quiz', 'Homework')),
constraint g_pk primary key (gpno)
GP GP
00 Participation
01 Project
02 Final Exam
03 Midterm Exam
04 Quiz
05 Homework
7) create table gpcourse (
slno char(3) not null,
gpno char(2) not null,
ptaken number(3) not null
check(ptaken <=100),
dropl char(1)
check (dropl in (‘Y’)),
constraint s_fk foreign key (slno)
references section (slno) on delete set null,
constraint g_fk foreign key (gpno)
references gp (gpno) on delete set null
SQL> select * from gpc
SLN GP PTAKEN D
000 02 30
000 05 20 Y
000 03 20
000 00 10
000 04 20 Y
001 02 30
001 05 20 Y
001 03 20
001 00 10
001 04 20 Y
002 00 25 Y
SLN GP PTAKEN D
002 01 75
003 02 60
003 03 40
004 02 60
004 03 40
005 02 50
005 05 10 Y
005 03 25
005 00 5
005 04 10
006 02 30
Now i created one more view
CREATE OR REPLACE VIEW gpol AS
SELECT section.cno, csno, gp, ptaken, dropl FROM gp, gpcourse, section, course WHERE gpcourse.slno= section.slno and section.cno= course.cno and
gp.gpno = gpcourse.gpno;
Now let me know where I'm going wrong?

Help needed in solving issue regarding shwoing data

Hello,
I am using obiee 11g,I am trying to create a report for finding the usage for each user.
Now i have auser column and usage 5 columns.
Each usage column is from 4 tables,3 from 3 diff tables and 2 columns from 1 tables.
I have a head prompt so that report gets filtered for head.
And the users belonging to head will display in the report.
Now the problem is especailly when i dont have data for a user for col4 or col5 of table4
of the report in the database.The reports starts showing "No Data Found".Even though
there are data for col1(tabe1),col2(table2),col3(table3).
I can't put ifnull because there are no data itself its not as there are null data.
So confused where am i going wrong?
Users are coming from tableA with left outer join with othere table1,table2,table3,table4 on username
Please help me out.
Any help?
Thanks

Hi User,
You can better go for "Save Current Customization" option available in Edit Dashboard to have user specifi default prompt values.
Rgds,
Dpka

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