Server Administration :: Cyrillic Character Set - Import A Table Of Data To Another Database
Aug 31, 2011
I'm try to import a table of data (character set: CL8ISO8859P5) to another database (character set: AL32UTF8) using exp/imp utility.After the import, all Cyrillic text was corrupted!
how do we know database character set is either single character set or multi character set?
While changing character-set from AL32UTF8 to WE8MSWIN1252 got "ORA-12712: new character set must be a superset of old character set".
Below are steps taken to resolve the issue -
ALTER DATABASE CHARACTER SET WE8MSWIN1252;
i got this error: ORA-12712: new character set must be a superset of old character set
below are the commands executed by me:
SQL> SHUTDOWN IMMEDIATE; SQL> CONNECT SYS/password AS SYSDBA; SQL> STARTUP MOUNT; SQL> ALTER SYSTEM ENABLE RESTRICTED SESSION; SQL> ALTER DATABASE OPEN; SQL> ALTER DATABASE CHARACTER SET INTERNAL_USE WE8MSWIN1252; SQL> SHUTDOWN; SQL> STARTUP; SQL> QUIT;
And its working...
I have not done it in proper order. Neither have done ccsscan. Still, no user reported any issues. Do my changes truncated the data?
Currently my oracle database character set is we8mswin1252 and it is only containing English data as well as spatial data (which is in English of course). I would like to change the Database character set so it could accept Arabic characters.
I have checked the below command on a test DB and it worked fine, but I want to know if it's recommended as a best practice when changing the character set to accept arabic and this won't corrupt my old entered Data ?
SHUTDOWN IMMEDIATE STARTUP RESTRICT ALTER DATABASE CHARACTER SET INTERNAL_USE AR8MSWIN1256 SHUTDOWN IMMEDIATE STARTUP
I want to change space allocation for character columns in my database, So it will store them as 'CHAR' and not 'BYTE'.my character set is
SQL> SELECT VALUE FROM V$NLS_PARAMETERS WHERE PARAMETER='NLS_CHARACTERSET'; VALUE ---------------------------------------------------------------- AL32UTF8 SQL> alter system set NLS_LENGTH_SEMANTICS='CHAR' scope=both;
System altered.I bounced the instance just to make sure
And then I want to see that when I create a table with some varchar2 column,The space for it will be allocated by chars, and not by bytes! However, when I run a check of create table, this is what I get:
Import: Release 10.2.0.1.0 - Production on Wednesday, 17 March, 2010 11:07:02 Copyright (c) 2003, 2005, Oracle. All rights reserved. Connected to: Oracle Database 10g Release 10.2.0.1.0 - Production Starting "MUBA"."SYS_IMPORT_TABLE_01": muba/******** tables=FUNCTION_NO directory=testdump NETWORK_LINK=DBLINK1 Estimate in progress using BLOCKS method... Processing object type TABLE_EXPORT/TABLE/TABLE_DATA
I have a database in my local machine that doesn't support Turkish characters. My NLS_CHARACTERSET is WE8ISO8859P1, It must be changed to WE8ISO8859P9 , since it supports full Turkish characters. I would like to migrate character data using a full export and import and my strategy is as follows:
1- create a full export to a location in network,
2- create a new database in local machine that it's NLS_CHARACTERSET is WE8ISO8859P9 (I would like to change NLS_LANGUAGE and NLS_TERRITORY by the way)
3- and implement full import to newly created database. I 've implemented first step, but I couldn't implement the second step. I 've created the second step by using toad editor by clicking Create -> New Database but I can not connect the new database. I must connect new database in order to perform full import.
i am trying to use exp/imp utility through cmd and exp/imp is done successfully as per message given at last. but data is not import in targeted user.
Microsoft Windows [Version 6.1.7600] Copyright (c) 2009 Microsoft Corporation. All rights reserved.
C:UsersNeetesh>exp
Export: Release 10.2.0.1.0 - Production on Thu Jul 12 14:18:04 2012
Copyright (c) 1982, 2005, Oracle. All rights reserved.
Username: scott/tiger@localdb
Connected to: Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - 64bit Production With the Partitioning, OLAP, Data Mining and Real Application Testing options Enter array fetch buffer size: 4096 >
Export file: EXPDAT.DMP > d:/scott_data
(2)U(sers), or (3)T(ables): (2)U > t
Export table data (yes/no): yes > y
Compress extents (yes/no): yes > n
Export done in WE8MSWIN1252 character set and AL16UTF16 NCHAR character set
About to export specified tables via Conventional Path ...
Table(T) or Partition(T:P) to be exported: (RETURN to quit) >
Export terminated successfully without warnings.
C:UsersNeetesh>imp
Import: Release 10.2.0.1.0 - Production on Thu Jul 12 14:20:09 2012
Copyright (c) 1982, 2005, Oracle. All rights reserved.
Username: localaepuser/flair22@localdb
Connected to: Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - 64bit Production With the Partitioning, OLAP, Data Mining and Real Application Testing options
Import file: EXPDAT.DMP > d:/scott_data
Enter insert buffer size (minimum is 8192) 30720>
Export file created by EXPORT:V10.02.01 via conventional path
Warning: the objects were exported by SCOTT, not by you
import done in WE8MSWIN1252 character set and AL16UTF16 NCHAR character set List contents of import file only (yes/no): no > y
Import entire export file (yes/no): no > y
importing SCOTT's objects into LOCALAEPUSER Import terminated successfully without warnings.
We have an Oracle Server database of Size 50 GB having 10 GB Data. And Planning to have a new Database Server of 200GB . So my question is after moving all the 10 GB data to 200 GB Database Server, will the performance of the system come down? Will it reduce the speed?
Now i have one problem. I have two database oracle 10g and install on two server (call is A and B). I already create database link between two database. Each database has over 200 tables.
Basically structure two database is same, but database A have data real time, database B is stand by server. Now i want to synchronize all data of database A to database B. What should i do?
3) as a workaround, i compressed these 2 SWP tables with OLTP option, and then i was able to drop the column from these 2 SWP tables.
4) Below statement is correct or not ? IF A TABLE USING BLOCK LEVEL COMPRESSION, THEN this error will come - ORA-39726: unsupported add/drop column operation on compressed tables.
if above statement is correct, then how to find out whether table data is using block level compression ?
5) we have DBMS_COMPRESSION.GET_COMPRESSION_TYPE. using this i just tried to find out, but i am getting "1" as output. I am not getting the exact meaning of it.
confirm what is the conclusion on this ?
SQL> declare rid rowid; n number; begin select max(rowid) into rid from NOVAR.PAYMENT_SWP; n := dbms_compression.get_compression_type('NOVAR','PAYMENT_SWP',rid); dbms_output.put_line(n); end; / 2 3 4 5 6 7 8 9 1
PL/SQL procedure successfully completed.
SQL> SQL> SET SERVEROUTPUT ON SQL> / 1
PL/SQL procedure successfully completed.
SQL> SELECT max(rowid) from NOVAR.PAYMENT_SWP;
MAX(ROWID) ------------------ AAsz4fAHSAAAD3IABs
(ii) 2nd table
SQL> set serveroutput on SQL> declare rid rowid; n number; begin select max(rowid) into rid from NOVAR.PREPAYMENT_SWP; n := dbms_compression.get_compression_type('NOVAR','PREPAYMENT_SWP',rid); dbms_output.put_line(n); end; 2 3 4 5 6 7 8 9 10 / 1
PL/SQL procedure successfully completed.
SQL> SELECT max(rowid) from NOVAR.INVOICELINE_SWP;
- we have 55 blocks allocated to the table (still) - 35 blocks are totally empty (above the HWM) - 19 blocks contains data (the other block is used by the system) - we have an average of about 2.8k free on each block used.
Therefore, our table
- consumes 19 blocks of storage in total. - of which 19 blocks * 8k blocksize - 19 block * 2.8k free = 98k is used for our data.
not too sure this calculation is accurate for getting the size (data)of the table.
We have a requirement from the customer to start using data and index compression in our 11g database.. Is this something available in Oracle 10g,11g without any additional costs? We are not sure if this will work with our application so we will have to test it in-house, is it possible to compress the existing table data/index to test it out?
I was wondering if there is any way to know in which Tablespace and Datafile my Table is located. I have exported a table and about to delete it as i am partitioning it.
When we try to query a column from a table the output is shown as "?????". Seems the data in that column is stored in a different character set, which is not recognised while displaying the output. The column size is 35byte.
The nls parameter table shows the character set as "we8mswin1252".
i am continuously inserting data to oracle database after some time like 2 hours oracle disconnects,it creates erros like
ERROR: ORA-01034: ORACLE not available ORA-27101: shared memory realm does not exist Process ID: 0 Session ID: 0 Serial number: 0
after restarting the database with shutdown immediate ans startup if i start inserting records it will show erros like
ORA-01653: unable to extend table SYSTEM.GLT_PROT_TRAFFIC_SUM_VOIP by 8192 in tablespace GLCOMM
but i have created the Tablespace with BigFile Auto Extend and max size unlimited, i am having 400GB disk space created Redo logs with 15gb,i have tried serveral times reinstalling the oracle but problem is not solved.
same problem is happenging with small datafiles also,
operating system: windows server 2008 R2 standard oracle server : 11g oracle client : 64 bit
Export and import of data in oracle forms...i have created 02 boutons one for export his trigger like this:
eclare alrt number; v_directory varchar2(200) := 'c:ackup'; --- that if the C Drive not the Drive that the windows had installed in it. path varchar2(100):='back_up' ||to_char(sysdate,'dd_mm_yyyy-hh24_mi_ss'); v_exp varchar2(200) := 'exp hamada/hamada2013@orcl file = ' ||v_directory ||'' ||path ||'.dmp'; [code]....
this code is correct he expot not only the data but also the creation of the table ....for exemple i do export and everything is good until now and i find the .dmp in the folder backup .. but when i deleted all data from my app and try to import this .dmp iit show me error it tell me thet the table phone is already created...just export the data of phone not the creation of table and data ???? or how can i import just the data from this .dmp ??
I have to load a fixed width file using sql loader utility. But the records have multiple special characters. writing / modifying the loader utility to load the data.
--Script to create the table create table t1 ( ip1 varchar2(2), ip2 number, ip3 number);
--loader utility LOAD DATA INFILE 'c:inputfile.dat' BADFILE 'c:adfile.bad' REPLACE INTO TABLE t1 FIELDS TERMINATED BY '' OPTIONALLY ENCLOSED BY '°' ( ip1POSITION(1:2) CHAR, ip2POSITION(3:17) INTEGER EXTERNAL ":ip2/100", ip3POSITION(18:32) INTEGER EXTERNAL ":ip3/100", )
--sql version i am using SQL*Loader: Release 9.2.0.1.0 - Production on Wed Mar 7 18:32:33 2012 Copyright (c) 1982, 2002, Oracle Corporation. All rights reserved.
In the above mentioned data file, records has multiple special characters like '°','¶' ,'-'. All these special characters have some meaning. eg: '°' specifies the above column needs to be multiplied by -1 '¶' specifies the above column needs to be multiplied by -0.1
what changes need to be made in loader utility for the same? Also, will there be any change in the utility if I am using higher version of oracle?