Help on Clustering of tables

Hi,
The below is an example of 3 tables for which i want to cluster.
I have the following structure of the 3 tables:
Table A Primary key -> referenced by Table B
Table A & B Primary key -> referenced by Table C
I have done the following:
1. This is the cluster created for the table A primary key ano
create cluster a_cl
ano number(10)
2. This creates a table A with the cluster command
create table a
ano number(10) primary key,
aname varchar2(20)
cluster a_cl(ano);
3. This creates another cluster for the table B as it is referenced by table C ( I have no idea if this has to be done)
create cluster b_cl
bno number(10)
4. This is the command i used to create a table which is having 2 clusters in it - cluster of table A & table B
create table b
(bno number(10) primary key,
bname varchar2(20),
ano number(10),
foreign key(ano) references a(ano))
cluster a_cl(ano), -- of table A
cluster b_cl(bno); -- of table B
The above command gave me the following error:
ORA-01769: duplicate CLUSTER option specifications.
I could not proceed further for the clustering of table C due to the above error.
How do I use cluster command for a table which is related with 2 or more tables?
I have gone through many examples on clustering but almost all of them have only one example in which only one table is related.
Can anybody help me in this regard?
Thanks in advance for any help.
Regards,
Rajashree.

Rajashree,
I understood relationships between them. It's just strange bacause many-to-many relationship includes many-to-one. If you have a reason, that's fine.
Before creating a cluster try to find out why you need it. Don't create because you heard that clusters can improve performance dramatically. They may, but they are usefull only in certain cases whereas in others they may cause in very poor performance. To find useful information about clusters see Oracle Documnetation: Oracle8 Concepts.
Read my first answer carefully. There is one of possible cluster organizations. How you want to organize your cluster depends on what you want. If you don't understand how cluster may benefit you, don't do it. I recommend to read carefully Oracle Docs to find out clusters benefits.
Aleksandr

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Pagination query help needed for large table - force a different index

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Lakmal Rajapakse wrote:
OK here is an example to illustrate the advantage:
SQL> set autot traceonly
SQL> select * from (
2 select a.*, rownum x from
3 (
4 select a.* from aoswf.events a
5 order by EVENT_DATETIME
6 ) a
7 where rownum <= 1200
8 )
9 where x >= 1100
10 /
101 rows selected.
Execution Plan
Plan hash value: 3711662397
| Id | Operation                      | Name       | Rows | Bytes | Cost (%CPU)| Time     |
|   0 | SELECT STATEMENT               |            | 1200 |   521K|   192   (0)| 00:00:03 |
|* 1 | VIEW                          |            | 1200 |   521K|   192   (0)| 00:00:03 |
|* 2 |   COUNT STOPKEY                |            |       |       |            |          |
|   3 |    VIEW                        |            | 1200 |   506K|   192   (0)| 00:00:03 |
|   4 |     TABLE ACCESS BY INDEX ROWID| EVENTS     |   253M|    34G|   192   (0)| 00:00:03 |
|   5 |      INDEX FULL SCAN           | EVEN_IDX02 | 1200 |       |     2   (0)| 00:00:01 |
Predicate Information (identified by operation id):
1 - filter("X">=1100)
2 - filter(ROWNUM<=1200)
Statistics
0 recursive calls
0 db block gets
443 consistent gets
0 physical reads
0 redo size
25203 bytes sent via SQL*Net to client
281 bytes received via SQL*Net from client
8 SQL*Net roundtrips to/from client
0 sorts (memory)
0 sorts (disk)
101 rows processed
SQL>
SQL>
SQL> select * from aoswf.events a, (
2 select rid, rownum x from
3 (
4 select rowid rid from aoswf.events a
5 order by EVENT_DATETIME
6 ) a
7 where rownum <= 1200
8 ) b
9 where x >= 1100
10 and a.rowid = rid
11 /
101 rows selected.
Execution Plan
Plan hash value: 2308864810
| Id | Operation                   | Name       | Rows | Bytes | Cost (%CPU)| Time     |
|   0 | SELECT STATEMENT            |            | 1200 |   201K|   261K (1)| 00:52:21 |
|   1 | NESTED LOOPS               |            | 1200 |   201K|   261K (1)| 00:52:21 |
|* 2 |   VIEW                      |            | 1200 | 30000 |   260K (1)| 00:52:06 |
|* 3 |    COUNT STOPKEY            |            |       |       |            |          |
|   4 |     VIEW                    |            |   253M| 2895M|   260K (1)| 00:52:06 |
|   5 |      INDEX FULL SCAN        | EVEN_IDX02 |   253M| 4826M|   260K (1)| 00:52:06 |
|   6 |   TABLE ACCESS BY USER ROWID| EVENTS     |     1 |   147 |     1   (0)| 00:00:01 |
Predicate Information (identified by operation id):
2 - filter("X">=1100)
3 - filter(ROWNUM<=1200)
Statistics
8 recursive calls
0 db block gets
117 consistent gets
0 physical reads
0 redo size
27539 bytes sent via SQL*Net to client
281 bytes received via SQL*Net from client
8 SQL*Net roundtrips to/from client
0 sorts (memory)
0 sorts (disk)
101 rows processed
Lakmal (and OP),
Not sure what advantage you are trying to show here. But considering that we are talking about pagination query here and order of records is important, your 2 queries will not always generate output in same order. Here is the test case:
SQL> select * from v$version ;
BANNER
Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - Prod
PL/SQL Release 10.2.0.1.0 - Production
CORE     10.2.0.1.0     Production
TNS for Linux: Version 10.2.0.1.0 - Production
NLSRTL Version 10.2.0.1.0 - Production
SQL> show parameter optimizer
NAME                                 TYPE        VALUE
optimizer_dynamic_sampling           integer     2
optimizer_features_enable            string      10.2.0.1
optimizer_index_caching              integer     0
optimizer_index_cost_adj             integer     100
optimizer_mode                       string      ALL_ROWS
optimizer_secure_view_merging        boolean     TRUE
SQL> show parameter pga
NAME                                 TYPE        VALUE
pga_aggregate_target                 big integer 103M
SQL> create table t nologging as select * from all_objects where 1 = 2 ;
Table created.
SQL> create index t_idx on t(last_ddl_time) nologging ;
Index created.
SQL> insert /*+ APPEND */ into t (owner, object_name, object_id, created, last_ddl_time) select owner, object_name, object_id, created, sysdate - dbms_random.value(1, 100) from all_objects order by dbms_random.random;
40617 rows created.
SQL> commit ;
Commit complete.
SQL> exec dbms_stats.gather_table_stats(user, 'T', cascade=>true);
PL/SQL procedure successfully completed.
SQL> select object_id, object_name, created from t, (select rid, rownum rn from (select rowid rid from t order by created desc) where rownum <= 1200) t1 where rn >= 1190 and t.rowid = t1.rid ;
OBJECT_ID OBJECT_NAME                    CREATED
     47686 ALL$OLAP2_JOIN_KEY_COLUMN_USES 28-JUL-2009 08:08:39
     47672 ALL$OLAP2_CUBE_DIM_USES        28-JUL-2009 08:08:39
     47681 ALL$OLAP2_CUBE_MEASURE_MAPS    28-JUL-2009 08:08:39
     47682 ALL$OLAP2_FACT_LEVEL_USES      28-JUL-2009 08:08:39
     47685 ALL$OLAP2_AGGREGATION_USES     28-JUL-2009 08:08:39
     47692 ALL$OLAP2_CATALOGS             28-JUL-2009 08:08:39
     47665 ALL$OLAPMR_FACTTBLKEYMAPS      28-JUL-2009 08:08:39
     47688 ALL$OLAP2_DIM_LEVEL_ATTR_MAPS 28-JUL-2009 08:08:39
     47689 ALL$OLAP2_DIM_LEVELS_KEYMAPS   28-JUL-2009 08:08:39
     47669 ALL$OLAP9I2_HIER_DIMENSIONS    28-JUL-2009 08:08:39
     47666 ALL$OLAP9I1_HIER_DIMENSIONS    28-JUL-2009 08:08:39
11 rows selected.
SQL> select object_id, object_name, last_ddl_time from t, (select rid, rownum rn from (select rowid rid from t order by last_ddl_time desc) where rownum <= 1200) t1 where rn >= 1190 and t.rowid = t1.rid ;
OBJECT_ID OBJECT_NAME                    LAST_DDL_TIME
     11749 /b9fe5b99_OraRTStatementComman 06-FEB-2010 03:43:49
     13133 oracle/jdbc/driver/OracleLog$3 06-FEB-2010 03:45:44
     37534 com/sun/mail/smtp/SMTPMessage 06-FEB-2010 03:46:14
     36145 /4e492b6f_SerProfileToClassErr 06-FEB-2010 03:11:09
     26815 /7a628fb8_DefaultHSBChooserPan 06-FEB-2010 03:26:55
     16695 /2940a364_RepIdDelegator_1_3   06-FEB-2010 03:38:17
     36539 sun/io/ByteToCharMacHebrew     06-FEB-2010 03:28:57
     14044 /d29b81e1_OldHeaders           06-FEB-2010 03:12:12
     12920 /25f8f3a5_BasicSplitPaneUI     06-FEB-2010 03:11:06
     42266 SI_GETCLRHSTGRFTR              06-FEB-2010 03:40:20
     15752 /2f494dce_JDWPThreadReference 06-FEB-2010 03:09:31
11 rows selected.
SQL> select object_id, object_name, last_ddl_time from (select t1.*, rownum rn from (select * from t order by last_ddl_time desc) t1 where rownum <= 1200) where rn >= 1190 ;
OBJECT_ID OBJECT_NAME                    LAST_DDL_TIME
     37534 com/sun/mail/smtp/SMTPMessage 06-FEB-2010 03:46:14
     13133 oracle/jdbc/driver/OracleLog$3 06-FEB-2010 03:45:44
     11749 /b9fe5b99_OraRTStatementComman 06-FEB-2010 03:43:49
     42266 SI_GETCLRHSTGRFTR              06-FEB-2010 03:40:20
     16695 /2940a364_RepIdDelegator_1_3   06-FEB-2010 03:38:17
     36539 sun/io/ByteToCharMacHebrew     06-FEB-2010 03:28:57
     26815 /7a628fb8_DefaultHSBChooserPan 06-FEB-2010 03:26:55
     14044 /d29b81e1_OldHeaders           06-FEB-2010 03:12:12
     36145 /4e492b6f_SerProfileToClassErr 06-FEB-2010 03:11:09
     12920 /25f8f3a5_BasicSplitPaneUI     06-FEB-2010 03:11:06
     15752 /2f494dce_JDWPThreadReference 06-FEB-2010 03:09:31
11 rows selected.
SQL> select object_id, object_name, last_ddl_time from t, (select rid, rownum rn from (select rowid rid from t order by last_ddl_time desc) where rownum <= 1200) t1 where rn >= 1190 and t.rowid = t1.rid order by last_ddl_time desc ;
OBJECT_ID OBJECT_NAME                    LAST_DDL_TIME
     37534 com/sun/mail/smtp/SMTPMessage 06-FEB-2010 03:46:14
     13133 oracle/jdbc/driver/OracleLog$3 06-FEB-2010 03:45:44
     11749 /b9fe5b99_OraRTStatementComman 06-FEB-2010 03:43:49
     42266 SI_GETCLRHSTGRFTR              06-FEB-2010 03:40:20
     16695 /2940a364_RepIdDelegator_1_3   06-FEB-2010 03:38:17
     36539 sun/io/ByteToCharMacHebrew     06-FEB-2010 03:28:57
     26815 /7a628fb8_DefaultHSBChooserPan 06-FEB-2010 03:26:55
     14044 /d29b81e1_OldHeaders           06-FEB-2010 03:12:12
     36145 /4e492b6f_SerProfileToClassErr 06-FEB-2010 03:11:09
     12920 /25f8f3a5_BasicSplitPaneUI     06-FEB-2010 03:11:06
     15752 /2f494dce_JDWPThreadReference 06-FEB-2010 03:09:31
11 rows selected.
SQL> set autotrace traceonly
SQL> select object_id, object_name, last_ddl_time from t, (select rid, rownum rn from (select rowid rid from t order by last_ddl_time desc) where rownum <= 1200) t1 where rn >= 1190 and t.rowid = t1.rid order by last_ddl_time desc
2 ;
11 rows selected.
Execution Plan
Plan hash value: 44968669
| Id | Operation                       | Name | Rows | Bytes | Cost (%CPU)| Time     |
|   0 | SELECT STATEMENT                |       | 1200 | 91200 |   180   (2)| 00:00:03 |
|   1 | SORT ORDER BY                  |       | 1200 | 91200 |   180   (2)| 00:00:03 |
|* 2 |   HASH JOIN                     |       | 1200 | 91200 |   179   (2)| 00:00:03 |
|* 3 |    VIEW                         |       | 1200 | 30000 |    98   (0)| 00:00:02 |
|* 4 |     COUNT STOPKEY               |       |       |       |            |          |
|   5 |      VIEW                       |       | 40617 |   475K|    98   (0)| 00:00:02 |
|   6 |       INDEX FULL SCAN DESCENDING| T_IDX | 40617 |   793K|    98   (0)| 00:00:02 |
|   7 |    TABLE ACCESS FULL            | T     | 40617 | 2022K|    80   (2)| 00:00:01 |
Predicate Information (identified by operation id):
   2 - access("T".ROWID="T1"."RID")
   3 - filter("RN">=1190)
   4 - filter(ROWNUM<=1200)
Statistics
          1 recursive calls
          0 db block gets
        348 consistent gets
          0 physical reads
          0 redo size
       1063 bytes sent via SQL*Net to client
        385 bytes received via SQL*Net from client
          2 SQL*Net roundtrips to/from client
          1 sorts (memory)
          0 sorts (disk)
         11 rows processed
SQL> select object_id, object_name, last_ddl_time from (select t1.*, rownum rn from (select * from t order by last_ddl_time desc) t1 where rownum <= 1200) where rn >= 1190 ;
11 rows selected.
Execution Plan
Plan hash value: 882605040
| Id | Operation                | Name | Rows | Bytes | Cost (%CPU)| Time     |
|   0 | SELECT STATEMENT         |      | 1200 | 62400 |    80   (2)| 00:00:01 |
|* 1 | VIEW                    |      | 1200 | 62400 |    80   (2)| 00:00:01 |
|* 2 |   COUNT STOPKEY          |      |       |       |            |          |
|   3 |    VIEW                  |      | 40617 | 1546K|    80   (2)| 00:00:01 |
|* 4 |     SORT ORDER BY STOPKEY|      | 40617 | 2062K|    80   (2)| 00:00:01 |
|   5 |      TABLE ACCESS FULL   | T    | 40617 | 2062K|    80   (2)| 00:00:01 |
Predicate Information (identified by operation id):
   1 - filter("RN">=1190)
   2 - filter(ROWNUM<=1200)
   4 - filter(ROWNUM<=1200)
Statistics
          0 recursive calls
          0 db block gets
        343 consistent gets
          0 physical reads
          0 redo size
       1063 bytes sent via SQL*Net to client
        385 bytes received via SQL*Net from client
          2 SQL*Net roundtrips to/from client
          1 sorts (memory)
          0 sorts (disk)
         11 rows processed
SQL> select object_id, object_name, last_ddl_time from t, (select rid, rownum rn from (select rowid rid from t order by last_ddl_time desc) where rownum <= 1200) t1 where rn >= 1190 and t.rowid = t1.rid ;
11 rows selected.
Execution Plan
Plan hash value: 168880862
| Id | Operation                      | Name | Rows | Bytes | Cost (%CPU)| Time     |
|   0 | SELECT STATEMENT               |       | 1200 | 91200 |   179   (2)| 00:00:03 |
|* 1 | HASH JOIN                     |       | 1200 | 91200 |   179   (2)| 00:00:03 |
|* 2 |   VIEW                         |       | 1200 | 30000 |    98   (0)| 00:00:02 |
|* 3 |    COUNT STOPKEY               |       |       |       |            |          |
|   4 |     VIEW                       |       | 40617 |   475K|    98   (0)| 00:00:02 |
|   5 |      INDEX FULL SCAN DESCENDING| T_IDX | 40617 |   793K|    98   (0)| 00:00:02 |
|   6 |   TABLE ACCESS FULL            | T     | 40617 | 2022K|    80   (2)| 00:00:01 |
Predicate Information (identified by operation id):
   1 - access("T".ROWID="T1"."RID")
   2 - filter("RN">=1190)
   3 - filter(ROWNUM<=1200)
Statistics
          0 recursive calls
          0 db block gets
        349 consistent gets
          0 physical reads
          0 redo size
       1063 bytes sent via SQL*Net to client
        385 bytes received via SQL*Net from client
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          0 sorts (disk)
         11 rows processed
SQL> select object_id, object_name, last_ddl_time from (select t1.*, rownum rn from (select * from t order by last_ddl_time desc) t1 where rownum <= 1200) where rn >= 1190 order by last_ddl_time desc ;
11 rows selected.
Execution Plan
Plan hash value: 882605040
| Id | Operation           | Name | Rows     | Bytes | Cost (%CPU)| Time     |
|   0 | SELECT STATEMENT      |     | 1200 | 62400 |    80   (2)| 00:00:01 |
|* 1 | VIEW                |     | 1200 | 62400 |    80   (2)| 00:00:01 |
|* 2 |   COUNT STOPKEY       |     |     |     |          |          |
|   3 |    VIEW            |     | 40617 | 1546K|    80   (2)| 00:00:01 |
|* 4 |     SORT ORDER BY STOPKEY|     | 40617 | 2062K|    80   (2)| 00:00:01 |
|   5 |      TABLE ACCESS FULL      | T     | 40617 | 2062K|    80   (2)| 00:00:01 |
Predicate Information (identified by operation id):
   1 - filter("RN">=1190)
   2 - filter(ROWNUM<=1200)
   4 - filter(ROWNUM<=1200)
Statistics
     175 recursive calls
       0 db block gets
     388 consistent gets
       0 physical reads
       0 redo size
       1063 bytes sent via SQL*Net to client
     385 bytes received via SQL*Net from client
       2 SQL*Net roundtrips to/from client
       4 sorts (memory)
       0 sorts (disk)
      11 rows processed
SQL> set autotrace off
SQL> spool offAs you will see, the join query here has to have an ORDER BY clause at the end to ensure that records are correctly sorted. You can not rely on optimizer choosing NESTED LOOP join method and, as above example shows, when optimizer chooses HASH JOIN, oracle is free to return rows in no particular order.
The query that does not involve join always returns rows in the desired order. Adding an ORDER BY does add a step in the plan for the query using join but does not affect the other query.

Help me to join tables!

I'm a very newbie to oracle and sql, so please help.I have a problem like:
I have 2 table:
STATE(StateName,Population)
StateName   Population
VIC         100000
NSW         100000
SA          100000
QLD         100000
ACT         100000
NT          100000
PROJECT(ProjCode,ProjName,StateName) - Foreign Key (StateName) references STATE
ProjCode    ProjName          StateName
p01            pro01             VIC
p02            pro02             NSW
p03            pro03             VIC
What I want is to join this 2 table and display it like :
StateName   ProjName
VIC         Pro01
NSW         Pro02
VIC         Pro03
SA
QLD
ACT
NT
And Don't use UNION / MINUS / OUTER JOIN & IS NOT NULL
Please help!!!
btw, how can i post using html code?
Thanks in advanced.
Message was edited by:
        user451262

Hi scott.swank!
I need to say again that i'm a very newbiew to oracle and sql, and I don't have job,
i'm student, in my assignment, my lecturer asks us to do thing like that.
We both know the "outer join" is the right solution, UNION is reasonable too.
But just because the assignment requires to do in different way from those ways.
So after several helps from other persons here, I saw that it could be impossible to do
without using UNION and OUTER JOIN.And of course, the lecturer needs to change the
requirement of the assingment because it's IMPOSSIBLE to do like that.Or he knew the way to do and we r here have not known it yet.Both of cases should have 1 case is right
and one case is wrong.so far I think 70% the requirement of my asignment is not possible
to do.But let's wait until the last second.
I always appreciate all helps here and keep needing helps from you here.
Thank you so much.

Help to read a table with data source and convert time stamp

Hi Gurus,
I have a req and need to write a ABAP prog. As soon as i excute ABAP program it should ask me enter a data source name, then my ABAP prog has excute teh code, in ABAP code i have to read a table with this data source as key, sort time stamp from table and should display the data source and time stamp as output.
As follows:
Enter Data Source Name:
Then user enters : 2lis_11_vahdr
Then out put should be "Data source :" 10-15-2008.
The time stamp format in table is 20,050,126,031,520 (YYYYMMDDhhmmss). I have to display as 05-26-2005. Any help would be apprciated.
Thanks,
Ram

Hi Jayanthi Babu Peruri,
I tried to extract YEAR, MONTH, DAY separately and using
EDIT MASK written it.
Definitely there will be some STANDARD CONVERSION ROUTINE will be there. But no idea about it.
DATA : V_TS      TYPE TIMESTAMP,
       V_TS_T    TYPE CHAR16,
       V_YYYY    TYPE CHAR04,
       V_MM      TYPE CHAR02,
       V_DD      TYPE CHAR02.
START-OF-SELECTION.
GET TIME STAMP FIELD V_TS.
V_TS_T = V_TS.
CONDENSE V_TS_T.
V_YYYY = V_TS_T.
V_MM   = V_TS_T+4(2).
V_DD   = V_TS_T+6(2).
V_TS_T(2) = V_MM.
V_TS_T+2(2) = V_DD.
V_TS_T+4(4) = V_YYYY.
SKIP 10.
WRITE : /10 V_TS," USING EDIT MASK '____-__-________'.
          /10 V_YYYY,
          /10 V_MM,
          /10 V_DD,
          /10 V_TS_T USING EDIT MASK '__-__-__________'.
If you want DATE alone, just declare the length of V_TS_T as 10.
Regards,
R.Nagarajan.
We can -

Need help on ADF Trinidad Table

Hi,
I got one strange problem, i have one AF Query and result table, in my af query 2 fields are LOV's have created LOV followed by the below link
http://andrejusb.blogspot.com/2008/11/adf-query-component-and-view-criteria.html LoV is coming fine but on the result table values are coming as a numbers.
For example in my LOV i have 3 values 1. Apple, 2. Orange 3. Grapes.
Now in the table fruits coloum i am getting 1 instead of Applet. and another row 3 instead of grapes.
Can any one help how can i get the values in the table instead of numbers.
It's urgent for me.
Regards,

Hi,
My problem was resolved, if i use Combo box with list of values is's working fine.
But here i have one more problem like if i use bind variable in the LOV VO Query then my result is not coming, if there is not bind variable it's working fine and if i use the bind variable in the LOV search option then it's working fine but if i hide the bind variable and set the value in AM prepareSesstion method the LOV is not returning any value.
Query is:
select substr(d.description,0,40) description
from cm_system_users a,
cm_user_responsibilities b,
cm_responsibility_processes c,
cm_processes d
where a.nt_login =:B_NT_LOGIN
and a.user_id = b.user_id
and trunc(sysdate) between b.eff_date and nvl(b.exp_date,sysdate + 1)
and b.RESPONSIBILITY_ID = c.RESPONSIBILITY_ID
and c.process_type = d.process_type
and d.enabled_flag = 'Y' order by d.arguments_flag
AM Method:
CmProcessViewImpl vo = getCmProcessView();
String nt_login = getUserPrincipalName();
vo.setNamedWhereClauseParam("B_NT_LOGIN", nt_login.toUpperCase());
vo.executeQuery();
Can any one help me in this.

!! Urgent Help Needed in Database Table Recovery !!

Hi,
What happened is I add a new field to the table. It's a field which need reference but I didn't include it and proceed with table adjustment in under SE11->Utilities->Database Adjustment. I encountered an error during adjustment saying that the reference field is not set and I can't proceed further since the table is now locked. There's 2 options, to continue adjustment and to unlock the table. When I choose continue adjustment, it still lead to the same problem, so i choose to unlocked it thinking that I could be able to change it since there's a prompt saying that I might loose some data. Once I clicked on onlocked, then I it tells me that the adjustment is done. However, I found out that now my table was not editable. It's saying that it's not in the database.
Can this table be recovered without the lost of data? Please anyone, I need this help urgently. THanks you in advance.

Your DBAs might be able to help you.
Rob

Help needed in Exporting tables data through SQL query

Hi All,
I need to write a shell script(ksh) to take some of the tables data backup.
The tables list is not static, and those are selecting through dynamic sql
query.
Can any body tell help me how to write the export command to export tables
which are selected dynamically through SQL query.
I tried like this
exp ------ tables = query \" select empno from emp where ename\= \'SSS\' \"
but its throws the following error
EXP-00035: QUERY parameter valid only for table mode exports
Thanks in advance,

Hi,
You can dynamically generate parameter file for export utility using shell script. This export parameter file can contain any table list you want every time. Then simply run the command
$ exp parfile=myfile.txt

Help needed in Derived Table

Dear Experts,
Can anyone tell me in which scenario we will go for derived table? We are creating a report on top of a Cube,
Thanks,
Kind Regards,
Sathish Kumar.N

Hi Sathish,
Hope this helps:
http://scn.sap.com/thread/2019524
http://www.forumtopics.com/busobj/viewtopic.php?p=684054&sid=13e89b7f7b9e97d6921e9899023e3929
http://www.forumtopics.com/busobj/viewtopic.php?p=770433&sid=1f947ce435f0c0b96ebed248a1c908a0
regards,
M

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