SQL & PL/SQL :: Nvarchar2 Maximum Size

May 11, 2011

I'm having some issues with my NVarchar2 columns that I want to solve

My current NLS_CHARACTERSET is 'AL16UTF16', and therefore I can only create NVarchar2 columns with an maximum extension of 2000 bytes. But I do need a column with 4000 bytes length. How can I create an 4000 NVarchar2 column?

(I do not want to use a CLOB column...only a NVarchar2)

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MB
------
312.5

The maximum number of the data block in one control file is 20000.

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Sep 9, 2012

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SQL> set lin 300
SQL> col TABLESPACE_NAME for a25
SQL> col FILE_NAME for a65
SQL> select TABLESPACE_NAME,FILE_ID,FILE_NAME,AUTOEXTENSIBLE,sum(BYTES/1024/1024) MB
2 from dba_data_files where TABLESPACE_NAME='SYSAUX' group by TABLESPACE_NAME,FILE_ID,FILE_NAME,AUTOEXTENSIBLE order by sum(BYTES/1024/1024) DESC,file_name;

TABLESPACE_NAME FILE_ID FILE_NAME AUT MB
------------------------- ---------- ----------------------------------------------------------------- --- ----------
SYSAUX 3 /ora2/oradata/dbname/sysaux_01.dbf NO 300

SQL> Alter database datafile 3 RESIZE 60000M;
Alter database datafile 3 RESIZE 60000M
*
ERROR at line 1: ORA-01144: File size (7680000 blocks) exceeds maximum of 4194303 block

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Mar 7, 2013

I'm currently doing migration from Oracle 10gR2 RDF to Oracle 11gR2 Semantic Technology.I followed the steps on the documentation and successfully created the network using the following:

-----
EXECUTE SEM_APIS.CREATE_SEM_NETWORK('rdf_tblspace');
CREATE TABLE rdf_network_trace (id NUMBER, triple SDO_RDF_TRIPLE_S);
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[code]....

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Did I miss something when I created my network?

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SQL & PL/SQL :: Datatype Of Some Columns Is NVARCHAR2

Feb 21, 2010

I have a table which have almost 90000 rows.

1. The datatype of some columns is NVARCHAR2. I want to change it to VARCHAR2 and NUMBER for some.

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Feb 16, 2011

I have written a trigger & procedure to call a webservice from pl/sql procedure. Everything was working fine until I was told to use nchar & nvarchar2 instead of varchar2 as per requirement. Now I am not able to run the procedure and getting errorcode with return response from server.

I didn't changed the width of columns but only datatype. What precautions do I need to take in code while doing this and what could have caused the error only by converting the data type.

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Apr 29, 2011

have a performance problem with a simple query, for example:

SELECT *
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I need to improve the performance of the query. How I can improve it?

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PL/SQL :: Query NVARCHAR2 Column In Select Statement

Sep 3, 2013

I have table desc xx_testName    

Null     Type          

-------- -------- --------------

COL1     NOT NULL NVARCHAR2(100)  COL2     NOT NULL NVARCHAR2(100) COL3     NOT NULL NVARCHAR2(100)

i am able to query select * from xx_test however if i query as select col1 from xx_test then it is giving error.

ORA-00904: "COL1": invalid identifier00904. 00000 -  "%s: invalid identifier"*

Cause:    *Action:Error at Line: 3,131 Column: 13  

Let me know how to query NVARCHAR2 column and how can we put in WHERE condition ?

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Sep 13, 2011

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May 8, 2013

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Apr 13, 2011

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the output should be field_3 =5

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Aug 14, 2010

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deptno sal
10 1000
10 500
10 100
20 2000
20 200
30 500
30 1500
30 2000
30 200

Sum of salary for each department.
10 1600
20 2200
30 4200

The output should be
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Aug 10, 2012

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data like follows

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160025 2531 30
160025 2536 20
160025 2537 50
160025 2538
162061 1468 0

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SEGMENT_FILE EXTENT_SIZE MAX_SIZE

0 128 23625
0 128 753

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Oct 25, 2010

Test data for the problem is as follows.

SQL> select * from v$version;

BANNER
----------------------------------------------------------------
Oracle Database 10g Enterprise Edition Release 10.2.0.4.0 - 64bi
PL/SQL Release 10.2.0.4.0 - Production
CORE 10.2.0.4.0 Production
TNS for 64-bit Windows: Version 10.2.0.4.0 - Production
NLSRTL Version 10.2.0.4.0 - Production

SQL> with t
2 as
3 (
4 select 1 id, 12 compid, 1 rel_type, null enddt from dual union all
5 select 1, 13, 1, to_date('31.12.1993','dd.mm.yyyy') from dual union all
6 select 1, 14, 1, to_date('12.06.1996','dd.mm.yyyy') from dual union all
7 select 1, 15, 1, to_date('23.04.2003','dd.mm.yyyy') from dual union all
[code].......

I want to find the the latest compid for individual types 1 and 2 only within a list of ids. Latest compid is defined as the compid associated with the latest end date (null is treated as the latest end date).

So in the above example for rel_type = 1, compid : 12 is latest, for rel_type : 2, compid : 6 is latest.

Datatype for the tables are :

Id : Number
compid : Number
Rel_Type : Number
enddt : Date

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Sep 17, 2011

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Jul 31, 2012

I've the following data set

with t as
(
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select 2 cor_id , 'SL' rt_cd,TO_Date( '05/12/2010 01:12:18 PM', 'MM/DD/YYYY HH:MI:SS AM') dt,100 iss_id from dual union all
select 3 cor_id , 'SR' rt_cd,TO_Date( '04/10/2010 02:11:15 PM', 'MM/DD/YYYY HH:MI:SS AM') dt,100 iss_id from dual union all
select 4 cor_id , 'SL' rt_cd,TO_Date( '04/10/2010 01:12:18 PM', 'MM/DD/YYYY HH:MI:SS AM') dt,100 iss_id from dual
)
select t1.*
from t t1for each iss_id =100 ,

there could me more than one record in the above data set, The requirement is i need to get the records where the trunc(dt) is maximum

I need to get 2 records with cor_id= 1 and 2.

how can i get those records

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What is the maximum number of failures a job can allow,when we are scheduling jobs using DBMS_JOB.

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