Query DB2 tables from oracle using normal view

This is with regard to querying db2 tables using oracle views. The view is created using dblink. The querying is not an one time activity.querying will be done once in a day. Can i use normal view (will it work ) or should i use materialised view. will i be able to view the added records in db2 table using normal view?
thanks,
vinodh

Vinodh2 wrote:
This is with regard to querying db2 tables using oracle views. The view is created using dblink. The querying is not an one time activity.querying will be done once in a day. Can i use normal view (will it work ) or should i use materialised view. will i be able to view the added records in db2 table using normal view?How can the SQL select statement via a dblink not work for a view, but the same SQL select statement work for a materialised view?
Do you think the database link or remote database care whether the select SQL that hits it, comes from a PL/SQL procedure, a view, a materialised view, a job or whatever else? It has no idea what/who is behind that select SQL - and nor does it care.
As for the benefits of a view vs. a materialised view - that depends on the requirements for needing to use that foreign database's data in the local database.

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Synonym required to query custom tables from Oracle Apps database

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OK, well "compare" can mean one of two things: Compare structure or compare contents. Here is a quick script to compare column structures of two tables on one database:
(select COLUMN_NAME,
DATA_TYPE,
DATA_LENGTH,
DATA_PRECISION,
DATA_SCALE,
NULLABLE
from dba_Tab_columns
where owner=:OWNR1
and table_name = :tablename
minus
select COLUMN_NAME,
DATA_TYPE,
DATA_LENGTH,
DATA_PRECISION,
DATA_SCALE,
NULLABLE
from dba_Tab_columns
where owner=:ownr2
and table_name = :tablename)
union all
(select COLUMN_NAME,
DATA_TYPE,
DATA_LENGTH,
DATA_PRECISION,
DATA_SCALE,
NULLABLE
from dba_Tab_columns
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and table_name = :tablename
minus
select COLUMN_NAME,
DATA_TYPE,
DATA_LENGTH,
DATA_PRECISION,
DATA_SCALE,
NULLABLE
from dba_Tab_columns
where owner=:ownr1
and table_name = :tablename)
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If you are going across dblinks to remote tables then you have to amend the "dba_tab_columns" to "sys.dba_tab_columns@yourdblink"
If you also want to compare indexes, triggers, etc then do the same sort of thing for the associated dba_ views for those objects.
And if you want to compare table contents, then often the fastest way is also to check minuses in both directions, if the tables are not too big:
e.g.
(select * from schema1.table@dblink1
minus
select * from schema2.table@dblink2)
union all
(select * from schema2.table@dblink2
minus
select * from schema1.table@dblink1)
local tables, of course, simply omit the "@dblink" issues.
There are tools to help in such things. TOAD, for example, has a pretty good schema comparison tool, and there are plenty of other options out there. But if you need to script this yourself then the logic I've shown is a good starting point.
Cheers,
Mike

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I am working with a Microsoft Visual Studio Project that requires to retrieve data from a large table from Oracle 10g database and export the data into the hard drive.
The problem here is that I am not able to connect to the database directly because of license issue but I can use a third party API to retrieve data from the database. This API has sufficient previllege/license permission on to the database to perform retrieval of data. So, I am not able to use DTS/SSIS or other tool to import data from the database directly connecting to it.
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Edited by: Jahedur on May 16, 2010 11:42 PM

Girish...Thanks for your reply...But I am sorry for the confusions. Let me explain that...
1."export the data into another media into the hard drive."
What does it mean by this line i.e. another media into hard drive???
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2."I am not able to connect to the database directly because of license issue"
huh?? I never heard this question that a user is not able to connect the db because of license. What error / message you are getting?
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3.I am not sure which API is you are talking about, but i am running an application of the visual studio data grid or similar kind of controls; in which i can select (select query) as many rows as i needed; no issue.
ANS: This API is provided by the 3rd party application vendor. I can pass a query to it and it returns a datatable.
4."better way to retrieve the records chunk by chunk and do the export without loosing the state of the data in the table?"
ANS: As I get a system error (out of memory) when I select all rows in a datatable at a time, I wanted to retrieve the data in multiple phases.
E.g: 1 to 20,000 records in 1st phase
20,001 to 40,000 records in 2nd phase
40,001 to ...... records in 3nd phase
and so on...
Please let me know if this does not clarify your confusions... :)
Thanks...
-Jahedur Rahman
Edited by: user13114507 on May 12, 2010 11:28 PM

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Hi
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http://www.oracle.com/technology/obe/obe_bi/discoverer/discoverer_1012/discomigration/migrate_disco_biee.htm
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Hi
I have tryed to connect to a DB2 database from oracle 10 G on linux.
I have installed unixODBC and a db2 odbc driver. I can connect to the db2 using isql, but oracle comes with this error:
select * from testtable@acc_spc_gr2
ERROR at line 1:
ORA-28500: connection from ORACLE to a non-Oracle system returned this message:
[Generic Connectivity Using ODBC]DRV_InitTdp: DB_ODBC_INTERFACE (718): ; [C077]
Could not find symbol 'SQLAllocConnect' in dynamic library
DB_ODBC_INTERFACE (722): ; [C079] Failed to load dynamic library
'/opt/ibm/iSeriesAccess/lib/libcwbodbc.so'
ORA-02063: preceding 3 lines from ACC_SPC_GR2
What am I doing wrong? Any one have a guide to do this?
- Jesper

this is my complete configuration
Database_
-bash-3.2$ export ORACLE_SID=XE
-bash-3.2$ sqlplus "/as sysdba"
SQL*Plus: Release 10.2.0.1.0 - Production on Mié Jul 7 10:04:43 2010
Copyright (c) 1982, 2005, Oracle. All rights reserved.
Conectado a:
Oracle Database 10g Express Edition Release 10.2.0.1.0 - Production
Platform_
Linux srvpdf 2.6.18-164.el5xen #1 SMP Thu Sep 3 04:47:32 EDT 2009 i686 i686 i386 GNU/Linux
*/usr/lib/oracle/xe/app/oracle/product/10.2.0/server/hs/admin/initDB2DATABASE.init*
#This is a sample agent init file that contains the HS parameters that are
# needed for an ODBC Agent.
# HS init parameters
#HS_FDS_CONNECT_INFO = ODBC_DSN
HS_FDS_CONNECT_INFO = prueba
HS_FDS_TRACE_FILE_NAME = /usr/lib/oracle/xe/app/oracle/product/10.2.0/server/hs/admin/DB2DATABASE.log
HS_FDS_CONNECT_INFO = DB2DATABASE
#HS_FDS_TRACE_LEVEL = debug
HS_FDS_TRACE_LEVEL = 0
HS_FDS_SHAREABLE_NAME = /opt/ibm/iSeriesAccess/lib/libcwbodbc.so
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set ODBCINI=/etc/odbc.ini
# Environment variables required for the non-Oracle system
set DB2INSTANCE=is400
listener.ora_
# listener.ora Network Configuration File:
SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(SID_NAME = PLSExtProc)
(ORACLE_HOME = /usr/lib/oracle/xe/app/oracle/product/10.2.0/server)
(PROGRAM = extproc)
(SID_DESC =
(SID_NAME = DB2DATABASE)
(ORACLE_HOME = /usr/lib/oracle/xe/app/oracle/product/10.2.0/server)
(PROGRAM =hsodbc)
(ENVS = LD_LIBRARY_PATH = /opt/ibm/iSeriesAccess/lib:/usr/lib/oracle/xe/app/oracle/product/10.2.0/server)
LISTENER =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC_FOR_XE))
(ADDRESS = (PROTOCOL = TCP)(HOST = 172.18.3.32)(PORT = 1521))
(ADDRESS = (PROTOCOL = TCP)(HOST = 172.18.3.31)(PORT = 1521))
(ADDRESS = (PROTOCOL = TCP)(HOST = 127.0.0.1)(PORT = 1521))
DEFAULT_SERVICE_LISTENER = (XE)
tnsnames.ora_
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = srvpdf)(PORT = 1521))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = XE)
EXTPROC_CONNECTION_DATA =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC_FOR_XE))
(CONNECT_DATA =
(SID = PLSExtProc)
(PRESENTATION = RO)
DB2DATABASE =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST =localhost )(PORT=1521))
(CONNECT_DATA =
(SERVICE_NAME = DB2DATABASE)
(HS=OK)
odbc.ini_
[prueba]
Description = iSeries Access ODBC Driver
Driver = iSeries Access ODBC Driver
System = xxx.xx.3.2
UserID = xxxxxx
Password = xxxxxx
Naming = 0
DefaultLibraries = QGPL
Database = CHERRYWEB
ConnectionType = 0
CommitMode = 2
ExtendedDynamic = 0
DefaultPkgLibrary = QGPL
DefaultPackage = A/DEFAULT(IBM),2,0,1,0,512
AllowDataCompression = 0
MaxFieldLength = 32
BlockFetch = 1
BlockSizeKB = 128
ExtendedColInfo = 0
LibraryView = 0
AllowUnsupportedChar = 0
ForceTranslation = 0
Trace = 0
odbcinst.ini_
[PostgreSQL]
Description = ODBC for PostgreSQL
Driver = /usr/lib/libodbcpsql.so
Setup = /usr/lib/libodbcpsqlS.so
FileUsage = 1
[iSeries Access ODBC Driver]
Description = iSeries Access for Linux ODBC Driver
Driver = /opt/ibm/iSeriesAccess/lib/libcwbodbc.so
Driver64 = /opt/ibm/iSeriesAccess/lib64/libcwbodbc.so
Setup = /opt/ibm/iSeriesAccess/lib/libcwbodbcs.so
Setup64 = /opt/ibm/iSeriesAccess/lib64/libcwbodbcs.so
UsageCount = 1
CPTimeout =
CPReuse =
System = 172.18.3.2
User = inf5mito
Password = lonco3pue
NOTE1 = If using unixODBC 2.2.11 or later and you want the 32 and 64-bit ODBC drivers to share DSN's,
NOTE2 = the following Driver64/Setup64 keywords will provide that support.
Threading = 2
DontDLClose = 1
ODBC Driver_
-bash-3.2$ cd /opt/ibm/iSeriesAccess/lib
-bash-3.2$ ls -ltr
total 2260
-r-xr-xr-x 1 root root 443939 Apr 5 2008 libcwbxda.so
-r-xr-xr-x 1 root root 94504 Apr 5 2008 libcwbrc.so
-r-xr-xr-x 1 root root 16636 Apr 5 2008 libcwbodbcs.so
-r-xr-xr-x 1 root root 729572 Apr 5 2008 libcwbodbc.so
-r-xr-xr-x 1 root root 998060 Apr 5 2008 libcwbcore.so
and this is my error.
SQL> /
select from display@db2database*
ERROR en línea 1:
ORA-28500: la conexión de ORACLE a un sistema no Oracle ha devuelto este
mensaje:
*[Generic Connectivity Using ODBC][C077] Could not find symbol 'SQLAllocConnect'*
in dynamic library
*[C079] Failed to load dynamic library*
*'/opt/ibm/iSeriesAccess/lib/libcwbodbc.so'*
ORA-02063: 3 lines precediendo a DB2DATABASE
Edited by: user6669081 on 07-jul-2010 6:31

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have table named 'liuxg_tab_01' in 10g.
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What's FYI :P
Another option would be to generate a CSV file of the data from 10g and use SQL*Loader to load it into 8i. Not sure this would be any easier, though.
Justin
Message was edited by:
user510846

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Hi All,
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Hi All,
I wanted to replicate oracle huge table to sql server and i am using SSMA.its helpful and fast but can we replicate the table to different name using SSMA.for example i have a table TEST and i wanted to replicate it to SQL_TEST.Can it be possible
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Query DB2 tables from oracle using normal view

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