Need suggestion in MERGE Statement

Hi,
I have a scenario like, I have one table T1 with 500,000 to 700,000 records and now I want to check the other table T2 if record exists or not. If record exists with opposite amount ( - or + ) as compare with first table T1 then I need to insert this record from second table T2 to first table T1 and if record is not exists then need to update the flag with 'N' in first table T1. Can MERGE statement will be better solution in this scenario?
Thanks,

Here's something generic:
insert into T1 (columns...)
select (columns...)
from   T1
where exists (select 1
               from   T2
               where T2.some_key = T1.some_key
               and    T2.some_value + T1.some_value = 0);
update T1
set    some_flag = 'N'
where not exists (select 1
                   from   T2
                   where T2.some_key = T1.some_key);Sure seems odd though. Are you sure you wrote your original question correctly?

Similar Messages

Need Help for MERGE statement

I have a MERGE statement, I am executing it from shell script, I want to print that how many rows has been updated and Inserted.
Can any one give me some idea.
Thanks in Advance

I want to print that how many rows has been updated and Inserted. If you really want/need to print that information, then don't use MERGE but INSERT and UPDATE statements.
http://asktom.oracle.com/pls/apex/f?p=100:11:0::::P11_QUESTION_ID:35615502072484
http://asktom.oracle.com/pls/apex/f?p=100:11:0::::P11_QUESTION_ID:122741200346595110

Help needed in the Merge Statement

Hi All,
I am using MERGE statement in my program. I want to maintain the log for the duplicate reords mean maintain the log for those reocrds which are updated in the merge statement.
Can any one help me in this that how can i maintain the log?
Thanks for your help in advance.
kind Regards,

http://asktom.oracle.com/pls/asktom/f?p=100:11:0::::P11_QUESTION_ID:35615502072484

Getting an error in MERGE statement

Hi,
I am getting an error "missing keyword" when I execute the MERGE statement.
Here I have attached copy of MERGE statement which I am trying to execute.
(My requirement is if I find matching record then insert again it's a business requirement. And if not then set flag)
MERGE INTO t1
USING t2
ON (conditions)
WHEN MATCHED THEN
INSERT (column list from t1)
VALUES (from t2)
WHEN NOT MATCHED THEN
UPDATE
SET ... ;
Can someone guide me?
Thanks,

This is why I told you yesterday in this thread...
Need suggestion in MERGE Statement
...that what you're asking is the opposite of the way MERGE works.
Guess you didn't want to believe me.

Help needed in MERGE statement

Hi,
I am new to PL/SQL, I want to update a table called "final_test" based on the below query result.
1. I want to check whether that particular record is present or not in my "final_test" table.
2. If its present in the "final_test" table and the process_status got changed then I want to update that alone in my "final_test" table.
3. If its not present then I want to insert that record into my "final_test" table.
Basically I am retrieving the report and its status for a particular date.
select
b.id,
a.name,
a.t_name,
c.process_status,
c.time_process
from rep_tab_map a, j_tab_map b, proc_status c
where a.t_name=b.t_name
and b.id=c.id (+)
and trunc(c.date_start)=trunc(sysdate -1)
group by a.name,b.id,c.process_status,c.time_process,a.t_name
order by 2
I thought of using Merge statement but i am not sure what i have to use in ":USING" and "ON" clause.
Please help me with MERGE or with someother way.
Thanks

Assuming final_test has same structure as select list in your query:
merge
into final_test a
using (
         select b.id,
                 a.name,
                 a.t_name,
                 c.process_status,
                 c.time_process
           from rep_tab_map a,
                 j_tab_map b,
                 proc_status c
           where a.t_name=b.t_name
             and b.id=c.id(+)
             and trunc(c.date_start)=trunc(sysdate -1)
           group by a.name,b.id,c.process_status,c.time_process,a.t_name
        ) b
on (b.id = a.id)
when matched then update set a.name = case a.process_status
                                          when b.process_status then a.name
                                          else b.name
                                        end,
                               a.t_name = case a.process_status
                                            when b.process_status then a.t_name
                                            else b.t_name
                                          end,
                               a.process_status = b.process_status,
                               a.time_process = case a.process_status
                                                  when b.process_status then a.time_process
                                                  else b.time_process
                                                end
when not matched then insert(
                               a.id,
                               a.name,
                               a.t_name,
                               a.process_status,
                               a.time_process
                        values(
                               b.id,
                               b.name,
                               b.t_name,
                               b.process_status,
                               b.time_process
/SY.

Help needed on Merge statement

Hi,
I want to merge a record which has a LONG field to a table with LOB field.
Am getting error "ORA-00932: inconsistent datatypes: expected - got LONG" at "to_lob(col2) " in the query. Please help in resolving this.
Thanks
RK
MERGE INTO message_STG d
USING (SELECT col1,to_lob(col2) col2
FROM message jm
WHERE modificationdate >= <some_date_value> ) f
ON (d.MESSAGEID= f.MESSAGEID)
WHEN matched THEN
UPDATE SET
col1=f.col1,
col2=f.col2
WHEN NOT matched THEN
INSERT VALUES (f.col1,f.col2);

Am getting error "ORA-00932: inconsistent datatypes: expected - got LONG" at "to_lob(col2) "If you read the documentation you will discover that to_lob() only works in an insert statement.
What you will have is create a holding table with a CLOB column and insert all your MESSAGE records into it, doing the TO_LOB() there. Then you can drive your MERGE statement from that holding table.
Is this a one-off data migration exercise or something you'll have to do regularly?
Cheers, APC
Blog : http://radiofreetooting.blogspot.com/

Merge Statement in PL/SQL

Hi
I am using a merge statement where i am updating and inserting records in table 2 from table 1.
I want to log the no. of rows updated and new rows inserted in the log table.
If i am not wrong, we can use sql%rowcount but i need help as how to use this statement.
Please suggest a solution.
Thanks

user11018028 wrote:
Will the sql%rowcount will give the no. of updated rows OR no. of newly inserted rows OR the sum of both in case of a merge statement.Total number of rows that changed (SUM).

Need help on Optimized Statement

We need to execute multiple MERGE statements on huge database (Oracle 11.2). and we can not avoid any joins :(
could you please suggest the best possible hint we can use to optimize this operation
as of now we are thinking about using below hints (facttmp is target table)
merge /*+ PARALLEL(facttmp) PARALLEL(dimtmp) nologging append */
Thanks in advance !

Please read these.
How to post a tuning request:
HOW TO: Post a SQL statement tuning request - template posting
When your query takes too long:
When your query takes too long ...
By the way, there's no such thing as a NOLOGGING hint.

Question on passing string values to Partition clause in a merge statement

Hello All,
I am using the below code to update specific sub-partition data using oracle merge statements.
I am getting the sub-partition name and passing this as a string to the sub-partition clause.
The Merge statement is failing stating that the specified sub-partition does not exist. But the sub-partition do exists for the table.
We are using Oracle 11gr2 database.
Below is the code which I am using to populate the data.
declare
ln_min_batchkey PLS_INTEGER;
ln_max_batchkey PLS_INTEGER;
lv_partition_name VARCHAR2 (32767);
lv_subpartition_name VARCHAR2 (32767);
begin
FOR m1 IN ( SELECT (year_val + 1) AS year_val, year_val AS orig_year_val
FROM ( SELECT DISTINCT
TO_CHAR (batch_create_dt, 'YYYY') year_val
FROM stores_comm_mob_sub_temp
ORDER BY 1)
ORDER BY year_val)
LOOP
lv_partition_name :=
scmsa_handset_mobility_data_build.fn_get_partition_name (
p_table_name => 'STORES_COMM_MOB_SUB_INFO',
p_search_string => m1.year_val);
FOR m2
IN (SELECT DISTINCT
'M' || TO_CHAR (batch_create_dt, 'MM') AS month_val
FROM stores_comm_mob_sub_temp
WHERE TO_CHAR (batch_create_dt, 'YYYY') = m1.orig_year_val)
LOOP
lv_subpartition_name :=
scmsa_handset_mobility_data_build.fn_get_subpartition_name (
p_table_name => 'STORES_COMM_MOB_SUB_INFO',
p_partition_name => lv_partition_name,
p_search_string => m2.month_val);
                    DBMS_OUTPUT.PUT_LINE('The lv_subpartition_name => '||lv_subpartition_name||' and lv_partition_name=> '||lv_partition_name);
IF lv_subpartition_name IS NULL
THEN
                         DBMS_OUTPUT.PUT_LINE('INSIDE IF => '||m2.month_val);
INSERT INTO STORES_COMM_MOB_SUB_INFO T1 (
t1.ntlogin,
t1.first_name,
t1.last_name,
t1.job_title,
t1.store_id,
t1.batch_create_dt)
SELECT t2.ntlogin,
t2.first_name,
t2.last_name,
t2.job_title,
t2.store_id,
t2.batch_create_dt
FROM stores_comm_mob_sub_temp t2
WHERE TO_CHAR (batch_create_dt, 'YYYY') = m1.orig_year_val
AND 'M' || TO_CHAR (batch_create_dt, 'MM') =
m2.month_val;
ELSIF lv_subpartition_name IS NOT NULL
THEN
                    DBMS_OUTPUT.PUT_LINE('INSIDE ELSIF => '||m2.month_val);
MERGE INTO (SELECT *
FROM stores_comm_mob_sub_info
SUBPARTITION (lv_subpartition_name)) T1
USING (SELECT *
FROM stores_comm_mob_sub_temp
WHERE TO_CHAR (batch_create_dt, 'YYYY') =
m1.orig_year_val
AND 'M' || TO_CHAR (batch_create_dt, 'MM') =
m2.month_val) T2
ON (T1.store_id = T2.store_id
AND T1.ntlogin = T2.ntlogin)
WHEN MATCHED
THEN
UPDATE SET
t1.postpaid_totalqty =
(NVL (t1.postpaid_totalqty, 0)
+ NVL (t2.postpaid_totalqty, 0)),
t1.sales_transaction_dt =
GREATEST (
NVL (t1.sales_transaction_dt,
t2.sales_transaction_dt),
NVL (t2.sales_transaction_dt,
t1.sales_transaction_dt)),
t1.batch_create_dt =
GREATEST (
NVL (t1.batch_create_dt, t2.batch_create_dt),
NVL (t2.batch_create_dt, t1.batch_create_dt))
WHEN NOT MATCHED
THEN
INSERT (t1.ntlogin,
t1.first_name,
t1.last_name,
t1.job_title,
t1.store_id,
t1.batch_create_dt)
VALUES (t2.ntlogin,
t2.first_name,
t2.last_name,
t2.job_title,
t2.store_id,
t2.batch_create_dt);
END IF;
END LOOP;
END LOOP;
COMMIT;
end;
Much appreciate your inputs here.
Thanks,
MK.

I've not used partitioning, but I do not see MERGE supporting a variable as a partition name in
MERGE INTO (SELECT *
FROM stores_comm_mob_sub_info
SUBPARTITION (lv_subpartition_name)) T1
USING ... I suspect it is looking for a partition called lv_subpartition_name.
I also don't see why you need that partition name - the ON clause should be able to identify the partition's criteria.

How to use Inner join of table as Source in Merge statement in SQL

Hi All,
I am trying to make source as multiple tables output using Join while coding there is no any syntax error but when i am executing this statement is giving following error
Following is the query
Merge Into EmpDept Target
Using (select E.Address,e.Design,e.EmailId,e.EmpId,e.Ename,e.ManagerId, e.Salary,D.DeptId,D.DeptName,D.Location from Employee E Inner join Dept D on E.DeptId=D.DeptId )As Source (Address,Design,EmailId,EmpId,EName,ManagerId,Salary,DeptId,DeptName,Location)
On Source.EmpId=Target.EmpId
when not matched then
Insert (Target.Address,Target.Design,Target.EmailId,Target.EmpId,Target.Ename,Target.ManagerId, Target.Salary,Target.DeptId,Target.DeptName,Target.Location)
values
(Address,Design,EmailId,EmpId,EName,ManagerId, Salary,DeptId,DeptName,Location)
When matched then
Update set Target.Address = Source.Address ,Target.Design = Source.Design,Target.EmailId = Source.EmailId ,Target.Ename = Source.Ename ,Target.ManagerId = Source.ManagerId , Target.Salary = Source.Salary ,Target.DeptId = Source.DeptId ,Target.DeptName = Source.DeptName ,Target.Location = Source.Location;
This is error while executing the above merge statement
The insert column list used in the MERGE statement cannot contain multi-part identifiers. Use single part identifiers instead.
Please suggest me where i am wrong..
Niraj Sevalkar

MERGE INTO EmpDept Target
Using (SELECT E.Address,
e.Design,
e.EmailId,
e.EmpId,
e.Ename,
e.ManagerId,
e.Salary,
D.DeptId,
D.DeptName,
D.Location
FROM Employee E
INNER JOIN Dept D
ON E.DeptId = D.DeptId) AS Source (Address, Design, EmailId, EmpId, EName, ManagerId, Salary, DeptId, DeptName, Location)
ON Source.EmpId = Target.EmpId
WHEN NOT matched THEN
INSERT (Address,
Design,
EmailId,
EmpId,
Ename,
ManagerId,
Salary,
DeptId,
DeptName,
Location)
VALUES (Address,
Design,
EmailId,
EmpId,
EName,
ManagerId,
Salary,
DeptId,
DeptName,
Location)
WHEN matched THEN
UPDATE SET Address = Source.Address,
Design = Source.Design,
EmailId = Source.EmailId,
Ename = Source.Ename,
ManagerId = Source.ManagerId,
Salary = Source.Salary,
DeptId = Source.DeptId,
DeptName = Source.DeptName,
Location = Source.Location;

Problem in Merge statement

Hi All,
I am using merge statement to update 30000 records from the tables having 55 lacs records.
But it is taking much time as i have to kill the session after 12 hours,as it was still going on.
If,Same update i m doing using cursors,it will finish in less than 3 hours.
Merge i was using is :-
MERGE INTO Table1 a
USING (SELECT MAX (TO_DATE ( TO_CHAR (contact_date, 'dd/mm/yyyy')
|| contact_time,
'dd/mm/yyyy HH24:Mi:SS'
) m_condate,
appl_id
FROM Table2 b,
(SELECT DISTINCT acc_no acc_no
FROM Table3, Table1
WHERE acc_no=appl_id AND delinquent_flag= 'Y'
AND financier_id='NEWACLOS') d
WHERE d.acc_no = b.appl_id
AND ( contacted_by IS NOT NULL
OR followup_branch_code IS NOT NULL
GROUP BY appl_id) c
ON (a.appl_id = c.appl_id AND a.delinquent_flag = 'Y')
WHEN MATCHED THEN
UPDATE
SET last_contact_date = c.m_condate;
In this query table 1 has 30000 records and table2 and table 3 have 3670955 and 555674 records respectively.
Please suggest,what i am doing wrong in merge,because as per my understanding merge statement is much better than updates or updates using cursors.
Required info is as follows:
SQL> show parameter user_dump_dest
NAME TYPE VALUE
user_dump_dest string /opt/oracle/admin/FINCLUAT/udu
mp
SQL> show parameter optimizer
NAME TYPE VALUE
optimizer_dynamic_sampling integer 2
optimizer_features_enable string 10.2.0.4
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 db_file_multi
NAME TYPE VALUE
db_file_multiblock_read_count integer 16
SQL> show parameter db_block_size
NAME TYPE VALUE
db_block_size integer 8192
SQL> column sname format a20
SQL> column pname format a20
SQL> column pval2 format a20
SQL> select
2 sname     ,
3 pname     ,
4 pval1     ,
5 pval2
6 from
7 sys.aux_stats$;
sys.aux_stats$
ERROR at line 7:
ORA-00942: table or view does not exist
Elapsed: 00:00:00.05
SQL> explain plan for
2 -- put your statement here
3 MERGE INTO cs_case_info a
4      USING (SELECT MAX (TO_DATE ( TO_CHAR (contact_date, 'dd/mm/yyyy')
5                          || contact_time,
6                          'dd/mm/yyyy HH24:Mi:SS'
7                          )
8                ) m_condate,
9                appl_id
10           FROM CS_CASE_DETAILS_ACLOS b,
11                (SELECT DISTINCT acc_no acc_no
12                FROM NEWACLOS_RESEARCH_HIST_AYLA, cs_case_info
13                WHERE acc_no=appl_id AND delinquent_flag= 'Y'
14                AND financier_id='NEWACLOS') d
15           WHERE d.acc_no = b.appl_id
16           AND ( contacted_by IS NOT NULL
17                OR followup_branch_code IS NOT NULL
18                )
19           GROUP BY appl_id) c
20      ON (a.appl_id = c.appl_id AND a.delinquent_flag = 'Y')
21      WHEN MATCHED THEN
22      UPDATE
23           SET last_contact_date = c.m_condate
24      ;
Explained.
Elapsed: 00:00:00.08
SQL> select * from table(dbms_xplan.display);
PLAN_TABLE_OUTPUT
| Id | Operation | Name | Rows | Bytes |TempSpc| Cost (%CPU)|
| 0 | MERGE STATEMENT | | 47156 | 874K| | 128K (1)|
| 1 | MERGE | CS_CASE_INFO | | | | |
| 2 | VIEW | | | | | |
| 3 | HASH JOIN | | 47156 | 36M| 5672K| 128K (1)|
| 4 | VIEW | | 47156 | 5111K| | 82339 (1)|
| 5 | SORT GROUP BY | | 47156 | 4236K| 298M| 82339 (1)|
| 6 | HASH JOIN | | 2820K| 247M| 10M| 60621 (1)|
| 7 | HASH JOIN | | 216K| 7830K| | 6985 (1)|
| 8 | VIEW | index$_join$_012 | 11033 | 258K| | 1583 (1)|
| 9 | HASH JOIN | | | | | |
| 10 | INDEX RANGE SCAN | IDX_CCI_DEL | 11033 | 258K| | 768 (1)|
| 11 | INDEX RANGE SCAN | CS_CASE_INFO_UK | 11033 | 258K| | 821 (1)|
| 12 | INDEX FAST FULL SCAN| IDX_NACL_RSH_ACC_NO | 5539K| 68M| | 5382 (1)|
| 13 | TABLE ACCESS FULL | CS_CASE_DETAILS_ACLOS | 3670K| 192M| | 41477 (1)|
| 14 | TABLE ACCESS FULL | CS_CASE_INFO | 304K| 205M| | 35975 (1)|
Note
- 'PLAN_TABLE' is old version
24 rows selected.
Elapsed: 00:00:01.04
SQL> rollback;
Rollback complete.
Elapsed: 00:00:00.03
SQL> set autotrace traceonly arraysize 100
SQL> alter session set events '10046 trace name context forever, level 8';
ERROR:
ORA-01031: insufficient privileges
Elapsed: 00:00:00.04
SQL>      disconnect
Disconnected from Oracle Database 10g Enterprise Edition Release 10.2.0.4.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
SQL>      spool off
Edited by: user4528984 on May 5, 2009 10:37 PM

For one thing, alias your tables and use that in the column specifications (table1.column1 = table2.column3 for example)...
      SELECT
         DISTINCT
            acc_no acc_no
      FROM Table3, Table1
      WHERE acc_no            = appl_id
      AND   delinquent_flag   = 'Y'
      AND   financier_id      = 'NEWACLOS'We don't know what your tables look like, what columns come from where. Try and help us help you, assume we know NOTHING about YOUR system, because more likely than naught, that's going to be the case.
In addition to that, please read through this which will give you a better-er idea of how to post a tuning related question, you've not provided near enough information for us to intelligently help you.
HOW TO: Post a SQL statement tuning request - template posting

Using Delete in Merge Statement

As merge statement inserts and updates the target data related to the source data but what if the target table contains some additional rows. I mean now both the target table and source tables are not the same. How to do it ?

mshamirtaloo wrote:
As merge statement inserts and updates the target data related to the source data but what if the target table contains some additional rows. I mean now both the target table and source tables are not the same. How to do it ?Well, there's nothing to say that the source and target need to be 'the same' so really not sure what you're asking.
As of Oracle 10 the MERGE command allows for insert, update and delete operations.
http://download.oracle.com/docs/cd/E11882_01/server.112/e10592/statements_9016.htm#SQLRF01606

Doubt Regarding Merge Statement in Oracle

Hi,
I have an SP which takes 3 parameters Lets say
(in_empid, in_empname,in_age)
here in_empid corresponds to the empid ie primary key for update/insert
Now which of the approach will be better. Will there be problem in using Merge statements for updates/insert
1. Approach 1
Add one more flag in parameters in_action . Now if in_action = 'U' then write an update statement.If in_action='I' then write insert stmnt
2. Approach 2
write a merge stmnt as follows
merge into employee e using
( select in_empid, in_empname,in_age from dual ) b
on ( b.in_empid = e.empid)
WHEN MATCHED THEN
UPDATE SET e.ENAME = in_empname,
e.age = in_age
WHEN NOT MATCHED THEN
INSERT
VALUES (in_empid,in_empname,in_age) something like that
Which would be preferred? I mean is there any restriction that merge can be used only to merge 2 tables?what are the drawbacks of using Merge?
Regds,
S

Hi cd,
Thanks for the reply.
Actaully I was keeping the front-end code also in mind.
If we click an update button, then they will have to manage a flag till the end to say that transaction was update. whereas when its an insert of new record, they have to maintain a falg till end to imply that the transaction was insert.
I want to avoid this so that they need not maintain additional flag.
Hence I was thinking of using MERGE statement.
Will there be any problem in using merge for such scenarios?
Regds,
S

Returning clause in MERGE statement

Hi ,
I'm using Oracle 10g Version
I tried the below code using UPDATE with Returning Clause & MERGE with Returning Clause .
I found NO errors while working with UPDATE statement . The following is the code with UPDATE statement
DECLARE
   TYPE empno_list IS TABLE OF emp.empno%TYPE;
   vempno_list   empno_list;
BEGIN
      UPDATE emp
         SET comm = 11
       WHERE deptno IN (SELECT deptno FROM dept)
   RETURNING empno
        BULK COLLECT INTO vempno_list;
   FOR i IN vempno_list.FIRST .. vempno_list.LAST
   LOOP
      DBMS_OUTPUT.put_line ('Values of EMP ' || vempno_list (i));
   END LOOP;
END;
But getting the error PL/SQL: ORA-00933: SQL command not properly ended when working with MERGE Statement
declare
type empno_list is table of emp.empno%type;
vempno_list empno_list;
begin
   merge into emp tgt
      using dept src
        on (src.deptno =tgt.deptno)
        when matched then
         update set tgt.comm=12
       returning tgt.empno bulk collect into vempno_list ;
        for i in vempno_list.first .. vempno_list.last loop
                dbms_output.put_line('Values of EMP '||vempno_list(i) ) ;
        end loop;
end;
Please suggest me

Probably because the RETURNING INTO clause doesn't belong to MERGE statement. It's available only for INSERT, UPDATE and DELETE. Here is the quote from Oracle Documentation:
The static RETURNING INTO clause belongs to a DELETE, INSERT, or UPDATE statement. The dynamic RETURNING INTO clause belongs to an EXECUTEIMMEDIATE statement.
And here's the link.
RETURNING INTO Clause
Hope it helps.
Ishan

ORA 22813 in merge statement

hi gems..good afternoon...
My database version is 11.2.0.1.0 64 bit Solaris OS.
I am facing an "ORA-22813: operand value exceeds system limits" while running a procedure.
I have used loggers and found that it is getting failed in a MERGE statement.
That merge statement is used to merge a table with a collection. the code is like below:
MERGE /*+ INDEX(P BALANCE_HISTORIC_INDEX) */
    INTO BALANCE_HOLD_HISTORIC P
    USING TABLE(GET_BALANCE_HIST(V_MERGE_REC)) M
    ON (P.CUSTOMER_ID = M.CUSTOMER_ID AND P.BOOK_ID = M.BOOK_ID AND P.PRODUCT_ID = M.PRODUCT_ID AND P.SUB_BOOK_ID = M.SUB_BOOK_ID AND)
    WHEN MATCHED THEN
      UPDATE
         <set .....>
    WHEN NOT MATCHED THEN
      INSERT<.....>The parameter of the function GET_BALANCE_HIST(V_MERGE_REC) is a table type.
Now the function GET_BALANCE_HIST(V_MERGE_REC) is a pipelined function and we have used that because the collection V_MERGE_REC may get huge with data.
This proc was running fine from the beginning but from day before yesterday it was continously throwing ORA 22813 error in that line.
please help..thanks in advance..

hi paul..thanks for your reply...
the function GET_BALANCE_HIST is not selecting data from any tables.
What this pipeline function is doing is, it is taking the huge collection V_MERGE_REC as parameter and releasing its datas in pipelined form. The code for the functions is :
CREATE OR REPLACE FUNCTION GET_BALANCE_HIST(P_MERGE IN TAB_TYPE_BALANCE_HISTORIC)
RETURN TAB_TYPE_BALANCE_HISTORIC
PIPELINED AS
V_MERGE TAB_TYPE_BALANCE_HISTORIC := TAB_TYPE_BALANCE_HISTORIC();
BEGIN
FOR I IN 1 .. P_MERGE.COUNT LOOP
    V_MERGE.EXTEND;
    V_MERGE(V_MERGE.LAST) := OBJ_TYPE_BALANCE_HISTORIC(P_MERGE(I).CUSTOMER_ID,
                                             P_MERGE(I).BOOK_ID,
                                             P_MERGE(I).PRODUCT_ID,
                                             P_MERGE(I).SUB_BOOK_ID,
                                             P_MERGE(I).EARNINGS,
                                             P_MERGE(I).EARNINGS_HOUSE,
                                             P_MERGE(I).QUANTITY,
                                             P_MERGE(I).ACCOUNT_INTEGER);
END LOOP;
FOR J IN 1 .. V_MERGE.COUNT LOOP
    PIPE ROW(OBJ_TYPE_BALANCE_HISTORIC(V_MERGE(I).CUSTOMER_ID,
                                             V_MERGE(I).BOOK_ID,
                                             V_MERGE(I).PRODUCT_ID,
                                             V_MERGE(I).SUB_BOOK_ID,
                                             V_MERGE(I).EARNINGS,
                                             V_MERGE(I).EARNINGS_HOUSE,
                                             V_MERGE(I).QUANTITY,
                                             V_MERGE(I).ACCOUNT_INTEGER));
END LOOP;
RETURN;
END;I think the error is comming because of the parameter value of V_MERGE_REC. Since it is huge, so loading that into memory is causing problem. But in this case, how can I resolve it?? Can I use a global temporary table for this??
Please suggest...

Need suggestion in MERGE Statement

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