How to avoid:Query returns extra trailing spaces in oracle 10g

I want to use cursor sharing FORCE, SIMILAR for performance tuning. but i am having some problems like query process will give extra trailing spaces this will throw errors from the java application while reading literals.
do we have any option in oracle 10g to avoid extra trailing spaces during query processing ?
alter session set cursor_sharing ='EXACT'
select 1 from dual;
'1'
1
alter session set curson_sharing='FORCE'
select 2 from dual;
'2'
2
alter session set curson_sharing='SIMILAR'
select 3 from dual;
'3'
3

You are right, But we already wrote millions of queries during that time we used cursor sharing is EXACT. so i don't want to take risk in modifying all the existing queries by adding TRIM.
do we have any option in oracle to trim after/ during processing the query.
Now we are facing performance issues and suggested us to use SIMILAR as cursor_sharing. but all the selected rows are giving extra tralining spaces.
I think i am clear now.

Similar Messages

Please reply:how to avoid extra trailing spaces while using cursor sharing

i am using cursor sharing with FORCE or SIMILAR.
what is the solution to avoid extra trailing spaces without any java code change.
do we have any option in oracle to avoid extra trailing spaces during the query processing ?
I am using Oracle 10g
CURSOR SHARING is a feature in which multiple sql statements
which are same will have a shared cursor (in the library cache) for an oracle session,
i.e, the first three steps of the sql processing (hard parse, soft parse, optimization)
will be done only the first time that kind of statement is executed.
There are two ways in which similar SQL statements with different condition values can be made to "SHARE" cursor during execution:
1. Writing SQLs with Bind Variables: SQLs having no hard coded literals in them
For e.g., the query below
SELECT node.emp_name AS configid
FROM emp node
WHERE emp_no = :1
AND dept_no =
DECODE (SUBSTR (:2, 1, 3),
:3, :4,
(SELECT MAX (dept_no)
FROM emp
WHERE emp_no = :5 AND dept_no <= :6)
AND node.dept_type = :7
ORDER BY node.emp_name
Here all the variables are dynamically bound during the execution. The ":X" represents BIND Variable and the actual values are bound to the SQL only at the 4th step of the execution of the SQL.
In applications: The queries written with "?" as bind variables will be converted into ":X" and are sqls with Bind Variables.
2. The CURSOR_SHARING parameter: Only Useful for SQL statements containing literals:
For eg., the query below:
SELECT node.emp_name AS configid
FROM emp node
WHERE emp_no = 'H200'
AND dept_no =
DECODE (SUBSTR (:1, 1, 3),
'PLN', :2,
(SELECT MAX (dept_no)
FROM emp
WHERE emp_no = :3 AND dept_no <= :4)
AND node.dept_type = :5
ORDER BY node.emp_name
In the query above, there are two hard coded literals H200 , PLN. In this case when the same SQL executed with different values like (H2003 , PLN), oracle will create a new cursor for this statement and all the first three steps ( hard & soft parse and optimization plan) needs to be done again.
This can be avoided by changing the CURSOR_SHARING parameter which can be set to any of three values:
1. EXACT: Causes the mechanism not be used, i.e. no cursor sharing for statements with different literals. This is the default value.
2. FORCE: Causes unconditional sharing of SQL statements that only differ in literals.
3. SIMILAR: Causes cursor sharing to take place when this is known not to have any impact on optimization.
So, FORCE and SIMILAR values of the parameter will be helping in cursor sharing and improve the performance of the SQLs having literals.
But here the problem arises if we use the FORCE and SIMILAR other than EXACT.
alter session set cursor_sharing ='EXACT'
select 1 from dual;
'1'
1
alter session set curson_sharing='FORCE'
select 2 from dual;
'2'
2
alter session set curson_sharing='SIMILAR'
select 3 from dual;
'3'
3
So, this will give extra trailing spaces in when we retrieve from java method and any
further java processing based on the hardcoded literal values will fail. this needs lot of
effort in remodifying the existing millions of lines of code.
My question is i have to use cursor sharing with FORCE or SIMILAR and can't we do the trimming
from the oracle query processing level ?
please help me on this ?
Message was edited by:
Leeladhar
Message was edited by:
Leeladhar

Please reply to this thread
How to avoid extr trailing spaces using Cursor sharing opton FORCE, SIMILAR

How to hide the data in particular table in oracle 10g

How to hide the data in particular table in oracle 10g
i want steps

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How to install NW2004s abap and/or java on Oracle 10g on SLES 10 32 bit?

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Hi Check the link page you shall get the PDF and then goto Page 50 .you shall find the details.
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CONNECT BY QUERY returns different count of rown in 10g resp. 11g databases

Folks,
I just spot a bellow issue in our databases.
1.) 10g database:
Connected to:
Oracle Database 10g Enterprise Edition Release 10.1.0.5.0 - Production
With the Partitioning, OLAP and Data Mining options
SQL> select * from global_name;
SQL> SELECT ROWNUM
2    FROM   dual
3 CONNECT BY ROWNUM <= 2;
    ROWNUM
         1
         2
         3
SQL> 2. 11g database
Connected to:
Oracle Database 11g Enterprise Edition Release 11.1.0.7.0 - Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
SQL> select * from global_name;
SQL> SELECT ROWNUM
2    FROM   dual
3    CONNECT BY ROWNUM <= 2;
    ROWNUM
         1
         2
SQL> As you can see in 10g above query returns 3 records, in 11g only 2.
Why it's like that? Can it be somehow set, to produce the same output?
Many thanks,
Tomas

I get correct rows on both database version !
Oracle Versions
10g 10.2.0.1.0
11g 11.1.0.6.0
SQL> select rownum from dual connect by rownum <= 2;
    ROWNUM
         1
         2
SQL> select * from v$version ;
BANNER
Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - Prod
PL/SQL Release 10.2.0.1.0 - Production
CORE    10.2.0.1.0      Production
TNS for 32-bit Windows: Version 10.2.0.1.0 - Production
NLSRTL Version 10.2.0.1.0 - Production
SQL> select rownum from dual connect by rownum <= 2;
    ROWNUM
         1
         2
SQL> select * from v$version ;
BANNER
Oracle Database 11g Enterprise Edition Release 11.1.0.6.0 - Production
PL/SQL Release 11.1.0.6.0 - Production
CORE    11.1.0.6.0      Production
TNS for 32-bit Windows: Version 11.1.0.6.0 - Production
NLSRTL Version 11.1.0.6.0 - Production

Same query returns differenent result sets in oracle 9i and 10g

Could anyone please clarify the issue i am having on a query. I have query that is returning around 2000 records in oracle db 9.2.0.8.0, at the same time with same data if run on 10.2.0.1.0 is returning only 12 records.
what might be the reason for this descrepancy, is something in 9i is considered differently in 10g?
Here is the query.
SELECT
0
,ot_req_head.rh_sys_id
,ot_req_head.rh_comp_code
,ot_req_head.rh_txn_code
,ot_req_head.rh_no
,ot_req_head.rh_appr_uid
,'Action to be taken' action
,ot_req_head.rh_appr_dt
,NULL AUTH_TO_UID
,NULL
,NULL
,NULL from_remarks
,NULL
,NULL
,'REQ'
,ot_req_head.rh_amd_no
,ot_req_head.rh_amd_dt
,ot_req_head.rh_cr_uid
,DECODE(ot_req_head.rh_charge_area_num,6,ot_req_head.rh_locn_code,1,ot_req_head.rh_charge_code,NULL)
,ot_req_head.rh_cr_dt
,NULL
FROM
orioni.om_txn_setup,
orioni.ot_req_head,
iscoit.isco_txn_auth,
SELECT DISTINCT rh_sys_id
FROM orioni.pending_mr
)pending_mr
WHERE
ot_req_head.rh_txn_code=txns_txn_code
AND
auth_comp_code(+)=ot_req_head.rh_comp_code
AND
auth_action_to_type(+) IS NULL
AND
auth_head_sys_id(+)=ot_req_head.rh_sys_id
AND
auth_txn_code(+)=ot_req_head.rh_txn_code
AND
ot_req_head.rh_clo_status IS NULL
AND
ot_req_head.rh_comp_code='001'
AND
txns_txnp_code='PURREQ'
AND
txns_values='N'
AND
ot_req_head.rh_appr_status=3
AND
ot_req_head.rh_sys_id = pending_mr.rh_sys_id
AND NOT EXISTS
SELECT 'X'
FROM
iscoit.isco_txn_auth A
WHERE
a.auth_head_sys_id = isco_txn_auth.auth_head_sys_id
AND
a.auth_action_from_uid = ot_req_head.rh_appr_uid
AND
a.auth_action_from_type = 'Action to be taken'
AND
a.auth_action_from_dt = ot_req_head.rh_appr_dt
AND
NVL(a.auth_txn_amend_no,0) = NVL(ot_req_head.rh_amd_no,0)
AND
a.auth_action_to_type = 'REJECT'
AND
ot_req_head.rh_cr_dt > TO_DATE('16-MAR-2008','DD-MON-YYYY')
Edited by: unus on Oct 19, 2009 3:56 AM
Edited by: unus on Oct 19, 2009 4:18 AM

Here's what I got on 9i and 10G:
Connected to:
Oracle9i Enterprise Edition Release 9.2.0.8.0 - Production
With the Partitioning, OLAP and Oracle Data Mining options
JServer Release 9.2.0.8.0 - Production
SQL> CREATE TABLE T_1(VAL1 NUMBER,VAL2 VARCHAR2(10));
Table created.
SQL> CREATE TABLE T_2(VAL1 NUMBER,VAL2 VARCHAR2(10));
Table created.
SQL> INSERT INTO T_1 VALUES(1,'FIRST');
1 row created.
SQL> INSERT INTO T_1 VALUES(2,'SECOND');
1 row created.
SQL> INSERT INTO T_2 VALUES(1,'FIRST');
1 row created.
SQL> INSERT INTO T_2 VALUES(2,'SECOND');
1 row created.
SQL> INSERT INTO T_1 VALUES(3,'THIRD');
1 row created.
SQL> INSERT INTO T_1 VALUES(4,'FOURTH');
1 row created.
SQL> INSERT INTO T_1 VALUES(5,'FIFTH');
1 row created.
SQL> commit;
Commit complete.
SQL> SELECT A.VAL1,B.VAL1 FROM
2 T_1 A,T_2 B
3 WHERE A.VAL1=B.VAL1;
     VAL1      VAL1
        1         1
        2         2
SQL> SELECT A.VAL1,B.VAL1 FROM
2 T_1 A,T_2 B
3 WHERE A.VAL1=B.VAL1(+);
     VAL1      VAL1
        1         1
        2         2
        3
        4
        5
SQL> SELECT A.VAL1,B.VAL1 FROM
2 T_1 A,T_2 B
3 WHERE A.VAL1=B.VAL1(+)
4 AND
5 NOT EXISTS (SELECT 'X' FROM t_2 C WHERE c.val1=b.val1);
     VAL1      VAL1
        3
        4
        5
SQL> select name, value from v$parameter where name like '%optimizer%' or name like '%cursor_sharing
NAME                                                             VALUE
cursor_sharing                                                   EXACT
optimizer_features_enable                                        9.2.0
optimizer_mode                                                   CHOOSE
optimizer_max_permutations                                       2000
optimizer_index_cost_adj                                         100
optimizer_index_caching                                          0
optimizer_dynamic_sampling                                       1
-- 10G
Verbonden met:
Oracle Database 10g Enterprise Edition Release 10.2.0.3.0 - 64bit Production
With the Partitioning, OLAP and Data Mining options
SQL> SELECT A.VAL1,B.VAL1 FROM
2 T_1 A,T_2 B
3 WHERE A.VAL1=B.VAL1;
      VAL1       VAL1
         1          1
         2          2
SQL> SELECT A.VAL1,B.VAL1 FROM
2 T_1 A,T_2 B
3 WHERE A.VAL1=B.VAL1(+);
      VAL1       VAL1
         1          1
         2          2
         5
         4
         3
SQL> SELECT A.VAL1,B.VAL1 FROM
2 T_1 A,T_2 B
3 WHERE A.VAL1=B.VAL1(+)
4 AND
5 NOT EXISTS (SELECT 'X' FROM t_2 C WHERE c.val1=b.val1);
      VAL1       VAL1
         3
         4
         5( Please use the tag before and after your example, so we're sure we're looking at your complete example )

Alter SHRINK SPACE in oracle 10g

Hello,
My table PRICE_T table gets deleted and inserted almost 50 million records everyday.
Now it takes too much time to perform this operation because of TABLE fragmented.
i can use "CREATE table as select” option to remove fragmentation from table.
but i dont want to use this option.
so i hv tried ALTER TABLE SHRINK SPACE as i m using ORACLE 10g
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alter table price_t shrink space
alter table price_t disable row movement;
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from DBA_tables
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Now it takes too much time to perform this operation because of TABLE fragmented.How do you define "fragmented"?
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select table_name,
round((blocks*8),2)||'kb' "size1",
round((num_rows*avg_row_len/1024),2)||'kb' "size"
from DBA_tables
where table_name = 'PRICE_T'; - What is the output of this query before and after you shrink the table?
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- I don't see any attempt to account in this query for overhead like PCTFREE.
- Is there a reason that you aren't using the DBMS_SPACE package? This query seems highly suspect.
Justin

How do I view Migrate Data errors - Access 2003 - Oracle 10g

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Now, when I select Migration->Migrate Data, I get the dialog that appears to start 4 or 5 threads and attempts to migrate each table. They all error and do not transfer any rows. I can see that there's one error per table, but I can't see the error text. I just know that an error occurred. Is there a log somewhere or is the error displayed somewhere else? How do I know what's gone wrong?
Thanks.

I too receive unexplained error counts using the Migrate Data menu selection and unexplained failures using the Generate Data Move Scripts menu selection. Permissions granted by role or direct grants should not be a problem, but a Migrate Data error appears in the Migration Log panel at the bottom of the SQL Developer window, "Failed to disable constraints: ORA-00942 ... ". No further details available on what constraints or why the error. No other errors were detected while following the instructions found in the Oracle SQL Developer Migration Workbench Getting Started guide. SQL Developer never migrates the data from the existing Access 2000 mdb file to the newly created schema objects in Oracle 10g using either method. The following roles and privileges have been granted to both the repository owner and the target schema owner:
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GRANT CONNECT TO MIGRATE_USER WITH ADMIN OPTION;
ALTER USER MIGRATE_USER DEFAULT ROLE ALL;
-- 25 System Privileges for MIGRATE_USER
GRANT CREATE ROLE TO MIGRATE_USER;
GRANT ALTER TABLESPACE TO MIGRATE_USER;
GRANT ALTER ANY SEQUENCE TO MIGRATE_USER;
GRANT INSERT ANY TABLE TO MIGRATE_USER;
GRANT SELECT ANY TABLE TO MIGRATE_USER;
GRANT CREATE ANY TABLE TO MIGRATE_USER;
GRANT UNLIMITED TABLESPACE TO MIGRATE_USER WITH ADMIN OPTION;
GRANT DROP TABLESPACE TO MIGRATE_USER;
GRANT CREATE ANY TRIGGER TO MIGRATE_USER;
GRANT ALTER ANY ROLE TO MIGRATE_USER;
GRANT CREATE VIEW TO MIGRATE_USER WITH ADMIN OPTION;
GRANT DROP USER TO MIGRATE_USER;
GRANT CREATE TABLESPACE TO MIGRATE_USER;
GRANT GRANT ANY ROLE TO MIGRATE_USER;
GRANT CREATE ANY SEQUENCE TO MIGRATE_USER;
GRANT ALTER ANY TABLE TO MIGRATE_USER;
GRANT DROP ANY TRIGGER TO MIGRATE_USER;
GRANT DROP ANY ROLE TO MIGRATE_USER;
GRANT DROP ANY SEQUENCE TO MIGRATE_USER;
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GRANT ALTER ANY TRIGGER TO MIGRATE_USER;
GRANT COMMENT ANY TABLE TO MIGRATE_USER;
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The data access tier of our application is developed in JAVA. We use EJB. So one way I am thinking of doing the above mentioned data transfer is to simply code it in the JAVA backed. But that might be to slow, there are millions of records in those first 5 tables. What is the best way to do something like that? Perhaps a custom (Perl?) script or some such?
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The problem is that the way the data is stored in the old tables you cannot write a query that would return it in such a format that you could immediately insert it in the new table without some formatting. Let me illustrate with an example. To pull the data from the old tables I use this query:
SELECT
     SXML_DOCUMENT_DATA.VALUE As DocumentValue,
SXML_ELEMENT.NAME As ElementName
FROM
     SXML_DOCUMENT,
     SXML_DOCUMENT_DATA,
     SXML_DOCUMENT_DETAIL,
     SXML_ELEMENT,
     SXML_TYPE
WHERE
     SXML_TYPE.XML_TYPE_KEY = SXML_DOCUMENT.XML_TYPE_KEY
AND     SXML_DOCUMENT.XML_DOCUMENT_KEY = SXML_DOCUMENT_DETAIL.XML_DOCUMENT_KEY
AND     SXML_DOCUMENT_DETAIL.XML_DOCUMENT_DETAIL_KEY = SXML_DOCUMENT_DATA.XML_DOCUMENT_DETAIL_KEY
AND     SXML_ELEMENT.XML_ELEMENT_KEY = SXML_DOCUMENT_DATA.XML_ELEMENT_KEY
AND     SXML_TYPE.NAME = 'DA_UNIT_COMMITMENT'
AND     (SXML_ELEMENT.NAME = 'resource'
     OR SXML_ELEMENT.NAME = 'resourceType'
     OR SXML_ELEMENT.NAME = 'commitmentType'
     OR SXML_ELEMENT.NAME = 'startTime'
     OR SXML_ELEMENT.NAME = 'endTime'
     OR SXML_ELEMENT.NAME = 'schedulingCoordinator')
ORDER BY
     SXML_DOCUMENT.NAME,
     SXML_DOCUMENT_DETAIL.XML_DOCUMENT_DETAIL_KEY,
     SXML_DOCUMENT_DATA.XML_DOCUMENT_DATA_KEY,
     SXML_ELEMENT.NAME;
The results from the SQL query above look like this:
DOCUMENTVALUE | ELEMENTNAME
1 | ALAMIT_7_UNIT_1 | resource
2 | GEN | resourceType
3 | BRS8 | schedulingCoordinator
4 | IFM | commitmentType
5 | 2008-07-29T18:00:00:00 | startTime
6 | 2008-07-30T00:00:00 | endTime
7 | ALAMIT_7_UNIT_1 | resource
8 | GEN | resourceType
9 | BRS8 | schedulingCoordinator
10 | IFM | commitmentType
11 | 2008-07-29T00:00:00 | startTime
12 | 2008-07-29T04:00:00 | endTime
and so on. The type of data repeats every 6 records. And the values of each 6 records corresponds to 1 row in the new table, which looks like this:
schedulingCoordinator | resource | resourceType | commitmentType | startDate | endDate
1| 1 | 27 | GEN | IFM | 2008-07-29T18:00:00:00 | 2008-07-30T00:00:00
2| 1 | 27 | GEN | | 2008-07-29T00:00:00 | 2008-07-29T04:00:00
So hopefully now you see the challenge. It is not as simple as writing a SQL query that returns result rows corresponding 1 to 1 to a row in the new table. Somehow I need to take the first 6 result rows from that big SQL query and put them in the first row of the new table. Then the next 6 and put them in the second row and so on. And also, we are talking about millions of records. What happens if I process the first 2 million and then some error occurs? Do I start from the beginning again? One idea I have is to process the data in chunks, say process 500 results, commit, process another 500, commit, and so on.
Edited by: 799984 on Oct 11, 2010 9:08 AM

How can i create a new database instance in oracle 10g express edition?

hello everybody
i'm a student
i am developing a database application
i'm using oracle 10g express edition
to run my application i need to create another database instance
but i didn't find any option for doing so in that product
if there is pls tell me where it is?
if not pls tell me how to manually create it?
regards,
Chaitanya

Chaitanya Babu M wrote:
yaa i'm sure about that .
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Hi
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How to protect a third party solution developed in Oracle 10G database

Hello!
We are building a third party solution for several specific industries, all the technology is based on Oracle 10G database, meanwhile, we are looking for a solution to protect the IPR to avoid the source code distributed incorrectly.
Welcome any input from you. thanks!

Different coding tools and language environments provide different facilities.
You might want to mention whether you are using PL/SQL, Java, C#, SQL extensions and object types, etc. and what characteristics of the IPR you are trying to protect.

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