Query Perofmance is much more fast in SQL server 2000 than Oracle 9i

I have converted a database from SQL Server 2000 to Oracle (9.0.2).
In a stored procedure a query based on 4 tables working well in SQL Server which takes just 1 or 2 minutes to give result But in Oracle it takes 3 to 4 Hours to return the results.Although Database hit ratio is 99 plus %. In Oracle when i created indexes on 2 columns of 2 tables it just take 5 to 10 sec. But I want to get the result in less time without indexes. Because in
SQL Server it Works well without indexes.
Please reply me with some solutions or reasons
Regards
AN

Most sites have a job that runs every night to keep the statistics up to date.Really? I would be very surprised if that was the case. Firstly, many sites don't want to take the hit of running stats for a whole system each night. Secondly, I would hope that many DBAs know this statement...
Always keep up to date statistics if you want your database to be efficent. ...is wrong.
The best that can happen from refreshing the statistics every night is that it makes no difference to your application. If your application is running nicely - that is, no users are yelling at you - then your current statistics are good enough. Refreshing statistics introduces instability into the system and might lead to queries performing worse than before.
Gathering stats is not the sort of thing you want to do with a scattergun. Analyze your database once, after you've reached what is a representative data volume and then leave it alone. Only refresh statistics if you have a specific issue (user complaint) and you think stale statistics might be the cause.
Cheers, APC

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Problem in Loading Data from SQL Server 2000 to Oracle 10g

Hi All,
I am a university student and using ODI for my final project on real-time data warehousing. I am trying to load data from MS SQL Server 2000 into Oracle 10g target table. Everything goes fine until I execute the interface for the initial load. When I choose the CKM Oracle(Create unique index on the I$ table) km, the following step fails:
21 - Integration - Prj_Dim_RegionInterface - Create Unique Index on flow table
Where Prj_Dim_Region is the name of my target table in Oracle.
The error message is:
955 : 42000 : java.sql.SQLException: ORA-00955: name is already used by an existing object
java.sql.SQLException: ORA-00955: name is already used by an existing object
     at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:125)
     at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:316)
     at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:282)
     at oracle.jdbc.driver.T4C8Oall.receive(T4C8Oall.java:639)
     at oracle.jdbc.driver.T4CPreparedStatement.doOall8(T4CPreparedStatement.java:185)
     at oracle.jdbc.driver.T4CPreparedStatement.execute_for_rows(T4CPreparedStatement.java:633)
     at oracle.jdbc.driver.OracleStatement.doExecuteWithTimeout(OracleStatement.java:1086)
     at oracle.jdbc.driver.OraclePreparedStatement.executeInternal(OraclePreparedStatement.java:2984)
     at oracle.jdbc.driver.OraclePreparedStatement.executeUpdate(OraclePreparedStatement.java:3057)
     at com.sunopsis.sql.SnpsQuery.executeUpdate(SnpsQuery.java)
     at com.sunopsis.dwg.dbobj.SnpSessTaskSql.execStdOrders(SnpSessTaskSql.java)
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I am using a surrogate key column in my target table alongwith the natural key. The natural key is populated by the primary key of my source table, but for the surrogate key, I have created a sequence in my oracle schema where the target table exists and have used the following code for mapping:
<%=snpRef.getObjectName( "L" , "SQ_PRJ_DIM_REGION" , "D" )%>.nextval
I have chosen to execute this code on target.
Among my attempts to solve this problem was to set Create Index option of the CKM Oracle(Create Index for the I$ Table) to No so that it wont create any index on the flow table. I also tried to use the simple CKM Oracle km . Both solutions allowed the interface to execute successfully without any errors, but the data was not loaded into the target table.
When I right-click on the Prj_Dim_Region data store and choose Data, it shows empty. Pressing the SQL button in this data store shows a dialog box " New Query" where I see this query:
select * from NOVELTYFURNITUREDW.PRJ_DIM_REGION
But when i press OK to run it, I get this error message:
java.lang.IllegalArgumentException: Row index out of range
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     at javax.swing.JTable.setRowSelectionInterval(Unknown Source)
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     at com.borland.dx.dataset.DataSet.a(Unknown Source)
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     at java.awt.EventDispatchThread.pumpOneEventForHierarchy(Unknown Source)
     at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
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     at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
     at java.awt.EventDispatchThread.run(Unknown Source)
I do not understand what the problem is and wasting days to figure it out. Any help will be highly appreciated as my deadline is too close for this project.
Thank you so much in advance.
Neel

Hi Cezar,
Can u plz help me with this scenario?
I have one Oracle data model with 19 source tables and one SQL Server data model with 10 target tables. I have created 10 interfaces which use JournalizedDataOnly on one of the tables in the interface; e.g in interface for DimCustomer target table, I have 2 tables, namely Customer and Address, but the journalizing filter appear only on Customer table and this option is disabled for Address automatically.
Now I want to create a package using OdiWaitForLog event detection. Is it possible to put all these 10 interfaces in just one package to populate the target tables? It works fine when I have only one interface and I use the name of one table in the interface for Table Name parameter of OdiWaitForLogData event, but when I try a comma seperated list of table names[Customer, Address] this error happens
java.sql.SQLException: ORA-00942: table or view does not exist
and if I use this method <%=odiRef.getObjectName("L","model_code","logical_schema","D")%>, I get this error
"-CDC_SET_NAME=Exception getObjectName("L", "model_code", "logical_schema", "D") : SnpLSchema.getLSchemaByName : SnpLschema does not exist" "
Please let me know how to make it work?
Do I need to create separate data models each including only those tables which appear in their corresponding interface and package? Or do I need to create multiple packages each with only one journalized interface to populate only one target table?
Thank you for your time in advance.
Regards,
Neel

Oracle 10g connectivity with sql server 2000 through oracle transpa gateway

dear gurus.
i am to connecto oracle 10g with sql server 2000 through oracle transparent gateway.
i have installed transparent gateway and proper configured. also link is created.
but when i execute query "select * from city@inventory" , so an error displayed.
ORA-12500: TNS:listener failed to start a dedicated server process.
kindly suggest me what could be the cause.
regards,

if the listener fails to spawn a dedicated server process it is commonly indicating an issue with the listener. So posting the listener and also a listener trace including a description of the env where you installed the gateway into which directory would be helpfull. Please keep also in mind if you have for example a 10.2.0.3 database and you install into this directoty a 10.2.0.1 gateway you have to reapply the patchset again do get consistent file version.
So please describe more detailed your env.

Migrating 250gb from ms sql server 2000 to oracle

Hi,
i am trying to migrate data from sql server 2000 to oracle. I have tried the online method and it takes more than a day to copy one table with 250 million rows. Currently i am trying the offline method of using migration scripts with sql loader.
this also seems to be taking a very long time for the single table with 250 million rows. Is there an effective way of doing this? please help
thanks

Well, lets look at what you're doing. You're using jdbc/odbc to move 250,000,000 rows. thats like using a straw to pump gas. We recommend that any migration over 10-20 MB should be done using the offline data move.
A couple of questions
1. How fast does the bcp go? How long does it take to complete?
2. When using SQL Loader, are you loading it in raw format? Have you switched off any indexes on the table? Do you have the capability to load in parallel?
Theres a lot you can do with the SQL Loader side to make it a lot fast. You might also want to consider dropping a note on the database forum too.
Barry

Trying to migrate SQL Server 2000 to Oracle 10g.

Hi.
I´m trying to migrate from Sql Server 2000 to Oracle 10g and I got some troubles.
I have connected both databases with my Oracle Sql Server, after that I went to the Menu--> Migrate--> Fast Migration and then fill all the steps necesary.
I can see the repository`s table at the oracle schema but after that the Sql Developer hang at the point "capture". I let the tool work for 2 hours and nothing to do. It´s not a hughe db so could be done faster.
May I miss something?.
Thanks.

Hi
I also have similar issue when trying to migrate from MS SQL 2005 to oracle 10g.
I use the SQL Developer Version 2.1.0.63.
First, I tried to use 'Quick Migration' then it created repository then stop there with error message
"Error ocurred during capture: ORA-01400: cannot insert NULL into ("DDHCOWNER"."MD_PROJECTS"."ID")"
Then, try manual way to capture SQL server, but some how it doesn't work. It just refresh IDE and stop.
Before this activity, I tried to migrate MS SQL 2005 using 'Quick Migration' and it works. But this time I have to do it on another DB then this happened.
So I re-try the previous connection then encountered the same to all.
Thus, please kindly help to advice how to solve this problem.
Thank you so much.
Regards,
Sai Lin Naung

Reg. Migrating data from SQL Server 2000 to Oracle

Hi All,
I need to migrate a same data from SQL Server 2000 to Oracle 9i.In sql server Export option is there, but the problem is some 30 tables have More than one LONG datatype column in a table. That's why oracle not allow to import.
Could you guys find any tool for the same.
Please do the needful.
Thanks & Regards,
Prathap

hi dermot,
it's very urgent now. Can you please give any solution for this.
and also i tried the SQL developer tool. But i got an below error,
Error starting at line 2 in command:
CREATE USER dbo_testdatalatest IDENTIFIED BY dbo_testdatalatest DEFAULT TABLESPACE USERS TEMPORARY TABLESPACE TEMP
Error at Command Line:2 Column:45
Error report:
SQL Error: ORA-01031: insufficient privileges
01031. 00000 - "insufficient privileges"
*Cause:    An attempt was made to change the current username or password
without the appropriate privilege. This error also occurs if
attempting to install a database without the necessary operating
system privileges.
When Trusted Oracle is configure in DBMS MAC, this error may occur
if the user was granted the necessary privilege at a higher label
than the current login.
*Action:   Ask the database administrator to perform the operation or grant
the required privileges.
For Trusted Oracle users getting this error although granted the
the appropriate privilege at a higher label, ask the database
administrator to regrant the privilege at the appropriate label.
Error starting at line 3 in command:
GRANT CREATE SESSION, RESOURCE, CREATE VIEW TO dbo_testdatalatest
Error report:
SQL Error: ORA-01031: insufficient privileges
01031. 00000 - "insufficient privileges"
*Cause:    An attempt was made to change the current username or password
without the appropriate privilege. This error also occurs if
attempting to install a database without the necessary operating
system privileges.
When Trusted Oracle is configure in DBMS MAC, this error may occur
if the user was granted the necessary privilege at a higher label
than the current login.
*Action:   Ask the database administrator to perform the operation or grant
the required privileges.
For Trusted Oracle users getting this error although granted the
the appropriate privilege at a higher label, ask the database
administrator to regrant the privilege at the appropriate label.
Error starting at line 4 in command:
CREATE USER epm_testdatalatest IDENTIFIED BY epm_testdatalatest DEFAULT TABLESPACE USERS TEMPORARY TABLESPACE TEMP
Error at Command Line:4 Column:45
Error report:
SQL Error: ORA-01031: insufficient privileges
01031. 00000 - "insufficient privileges"
*Cause:    An attempt was made to change the current username or password
without the appropriate privilege. This error also occurs if
attempting to install a database without the necessary operating
system privileges.
When Trusted Oracle is configure in DBMS MAC, this error may occur
if the user was granted the necessary privilege at a higher label
than the current login.
*Action:   Ask the database administrator to perform the operation or grant
the required privileges.
For Trusted Oracle users getting this error although granted the
the appropriate privilege at a higher label, ask the database
administrator to regrant the privilege at the appropriate label.
Error starting at line 5 in command:
GRANT CREATE SESSION, RESOURCE, CREATE VIEW TO epm_testdatalatest
Error report:
SQL Error: ORA-01031: insufficient privileges
01031. 00000 - "insufficient privileges"
*Cause:    An attempt was made to change the current username or password
without the appropriate privilege. This error also occurs if
attempting to install a database without the necessary operating
system privileges.
When Trusted Oracle is configure in DBMS MAC, this error may occur
if the user was granted the necessary privilege at a higher label
than the current login.
*Action:   Ask the database administrator to perform the operation or grant
the required privileges.
For Trusted Oracle users getting this error although granted the
the appropriate privilege at a higher label, ask the database
administrator to regrant the privilege at the appropriate label.
Error starting at line 6 in command:
CREATE USER lportal_testdatalatest IDENTIFIED BY lportal_testdatalatest DEFAULT TABLESPACE USERS TEMPORARY TABLESPACE TEMP
Error at Command Line:6 Column:49
Error report:
SQL Error: ORA-01031: insufficient privileges
01031. 00000 - "insufficient privileges"
*Cause:    An attempt was made to change the current username or password
without the appropriate privilege. This error also occurs if
attempting to install a database without the necessary operating
system privileges.
When Trusted Oracle is configure in DBMS MAC, this error may occur
if the user was granted the necessary privilege at a higher label
than the current login.
*Action:   Ask the database administrator to perform the operation or grant
the required privileges.
For Trusted Oracle users getting this error although granted the
the appropriate privilege at a higher label, ask the database
administrator to regrant the privilege at the appropriate label.
Error starting at line 7 in command:
GRANT CREATE SESSION, RESOURCE, CREATE VIEW TO lportal_testdatalatest
Error report:
SQL Error: ORA-01031: insufficient privileges
01031. 00000 - "insufficient privileges"
*Cause:    An attempt was made to change the current username or password
without the appropriate privilege. This error also occurs if
attempting to install a database without the necessary operating
system privileges.
When Trusted Oracle is configure in DBMS MAC, this error may occur
if the user was granted the necessary privilege at a higher label
than the current login.
*Action:   Ask the database administrator to perform the operation or grant
the required privileges.
For Trusted Oracle users getting this error although granted the
the appropriate privilege at a higher label, ask the database
administrator to regrant the privilege at the appropriate label.
Error starting at line 8 in command:
connect dbo_testdatalatest/dbo_testdatalatest;
Error report:
Connection Failed
Commit
Regards,
Prathap.R

I need to syncronize MS SQL Server 2000 with Oracle DB

Hello
I need to syncronize MS SQL Server 2000 with Oracle Database. I have created both DB connections succesfully.
1. Oracle DB: Oracle (JDBC)
2. SQL Server JDBC-ODBC (bridge)
When i create a partner link and select a DB Adapter i try to query SQL Server but it never brings the tables back to me.
I´ve tried to configure connection 2 (MSSQL) using thrid party but i really don´t know how.
Driver Class??
Library?
Library Name??
Location??
Class Path?
Source Path??
Doc Path??
URL??
help is appreciated. Thank you.
F.

Here is my setup:
Driver Class: com.microsoft.jdbc.sqlserver.SQLServerDriver
Library: SQLSERVER
ClassPath: Depends on where your jar file is.
URL: jdbc:microsoft:sqlserver://your ip address or DNS name goes here.
The above is how my database connection is defined.
When I create a partner link and it gets to the screen where it imports tables it takes a while for the "Querying Database Ojects..." to finish. When it does I have not tables. I then select <all schemas> AGAIN and this time I get the tables.
If you get succeed when you do a test on the connection then I assume the connection is setup right. Perhaps the problem is like mine above and you have to select <all schemas> a second time.

General question on SQL Server 2000 to Oracle 10g

Hello all,
I just have a general question on migration from SQL Server 2000 to Oracle 10g using SQL Developer.
How does it migrate Users with proper privileges from SQL Server to Oracle? Follow the interface steps? Or should the users be created on destination Oracle side?
Thank you.

Hi,
It depends which type of migration you are making.
For a 'Standard' migration when you migrate data a 'create user' statement is created as part of the migration and you will see this in the generated code.
If you are using the 'Quick' migration option then you need to create the Oracle user or use an existing user to receive the data.
Your best option is to review the documentation available from -
http://www.oracle.com/technology/tech/migration//workbench/index_sqldev_omwb.html
or directly from -
http://download.oracle.com/docs/cd/E12151_01/index.htm
and then get back with specific questions if this does not give you the information you need.
Review the chapter -
2. Migrating Third-Party Databases
in -
Oracle® Database SQL Developer User’s Guide Release 1.5
Regards,
Mike

How to Migrate my database from SQL Server 2000 to Oracle

I want to transfer my database from SQL Server 2000 to Oracle, Can I do this without using Oracle Migration Workbench ??
Please help me.
Thanks in advance
Vicky... :-)

Do you have a good technical reason for not wanting to use the Migration Workbench?
Given that it's free and does a hell of a lot of the work for you, why wouldn't you use it?
Other than that, I would say you would be on your own...
cheers,
Anthony

SQL Server 2000 to Oracle 8i

Hi all,
I hope someone will have an answer to my question. I am in the process of migrating our database which is in SQL Server 2000 to Oracle 8i. I have captured the SQL Server Source model [which took all night]. I haven't yet created the oracle model.
My question is: When the Migration Workbench captures the source does it capture the data at that time as well? I need to move some new data [not tables] into the source SQL Server database will the action "Migrate to Oracle" move latest data or will it move data that was captured yesterday?
I would really appreciate your help in this matter.
Thanks,
Archita.

Hi Archita,
The OMWB does not capture any data when the source model is captured.
When you come to "Migrate to Oracle" you will be given an option of moving the data at this point.
If you do choose to move the data, you will be moving the data that is currently in the SQLServer 2K database.
I hope this helps,
& good luck in your migration.
Dermot.

Migrating Japanese Characters from MS SQL Server 2000 to Oracle 9i usng Jsp

Hi ,
I have a situation where the Japanese characters are to be migrated from MS SQL Server 2000 to Oracle 91 and then render the same using JSP.
I followed the below approach,
1. Extract the Japanese data from MS SQL Server and generate an XML
2. Parse the XML and store it into Oracle 9i database which is of UTF-8 encoding.
3. On retreiving and rendering using the Shift-JIS adds few junk characters additionally.
When I try to copy paste the Japanese contents from XML to a text file, it is working fine.
Could some one help me in resolving this issue?
It is very urgent, and any help would be greatly appreciated.

There is documentation in the reference guide sent with the workbench, there is this discussion forum, the support web page (which includes tech notes and FAQ's), and the company specific procedural language documentation.
There is also an older document for use with the old sybase toolkits which may be obscelete, and there are some internal documents which were for internal consumption.
Turloch
Oracle Migration Workbench Team

How to connect to SQL server 2000 with Oracle Form

Hi,
I'm looking for the document of how to connect "SQL Server 2000" with Oracle Form 6i. Anyone knows that?

Shay or other knowledgeable folks,
Is there a way to utilize the wizard for "Business Tier > ADF Business Components > Business Components from Tables" for SQL Server 2000, 2005 or 2008. I can successfully execute sql via java programmatically or import a table from SQL Server with "Business Tier > ADF Business Components > Entity Object" wizard, but the Business Components from Tables simply doesn't see any tables under any schema. Without the "Business Components from Tables", i don't get the referential constraints imported into the application and to code all those from scratch is just not as elegant. So far i have only utilized the sql server jdbc driver from Microsoft (versions, 1.1, 1.2 and 2.0). Is there an alternative client that i need to use to enable selecting tables from that "Business Components from Tables" wizard. Is this a limitation of SQL Server, the jdbc driver or the wizard itself? Did anybody else experience the same issues? I am using Jdeveloper 11.1.1.0.1 against SQL Server 2005 (currently)
Thanks,
Andy

How do SQL server 2000 and Oracle linked?

Hi,
How do SQL server 2000 and Oracle linked?
Thanks in Advance
Baloch.

use the like to setup ODBC and datasource
http://www.databasejournal.com/features/oracle/article.php/3442661/Making-a-Connection-from-Oracle-to-SQL-Server.htm
and then create link server in sql server after you test conenction with oracle

Migrating SQL Server 2000 to Oracle 9i

Hi
I will explain system first.The current system has Delphi 5 as Front -End and SQL Server 2000 as Back -End
Now i want to make the Delphi 5 Application compatible with both SQL Server 2000 and Oracle 9i.
What all things should be taken in to consideration for this process????
Ren

Looking forward for HELP
I will explain system first.The current system has Delphi 5 as Front -End and SQL Server 2000 as Back -End
Now i want to make the Delphi 5 Application compatible with both SQL Server 2000 and Oracle 9i.
What all things should be taken in to consideration for this process????
Ren

Migration sql server 2000 to oracle 9i

Hi
I migrate sql server 2000 to oracle 9i
when i capture Microsoft Sql Server it gives an error
oracle.dbtools.metadata.persistence.PersistenceException: ORA-04098: trigger 'MIGRATIONS.MD_PROJECTS_TRG' is invalid and failed re-validation
I try it again and it starts but it doesn't stop until clicking cancel or close
what is the wrong?
Thanks

Hi,
You are hitting a know issue using a repository created in 9.2.
To show this is the case do the following -
SQL> alter trigger MD_PROJECTS_TRG compile ;
Warning: Trigger altered with compilation errors.
SQL> show errors
Errors for TRIGGER MD_PROJECTS_TRG:
LINE/COL ERROR
3/9 PL/SQL: Statement ignored
3/20 PLS-00905: object MIGREP.MD_META is invalid
Compiling md_meta -
SQL> alter package md_meta compile ;
Warning: Package altered with compilation errors.
SQL> show errors
Errors for PACKAGE MD_META:
LINE/COL ERROR
0/0 PLS-00908: The stored format of MD_META is not supported by this
release
21/4 PLS-00114: identifier 'PUTBAIFZKA3IHSJ5AC4ZXWYAWG41KN' too long
21/4 PLS-00707: unsupported construct or internal error [2702]
SQL>
==
If you get this then the only alternative is to create the SQL*Developer repository in a 10.2 database.
Regards,
Mike

Query Perofmance is much more fast in SQL server 2000 than Oracle 9i

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