Migrating Informix 7.3 to Oracle 9i

Hi,
I want to know any one (Bay Area) worked on migrated/working on migrating databases from Informix to Oracle. Please let me know.
Thanks in advance for your reply.
Ramesh

Ramesh,
I am working on migrating Informix 9 to Oracle9.2i. I know it is a version up in Informix but the lessons
should be the same almost.
I am doing this on AIX 4.3.
Geoff Heaton
ING Australia

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Problem when migrate Informix 9.4 to Oracle 10.2 by use OMWB 10.1.0.4

Hi,
When I use OMWB to migrate Informix 9.4 to Oracle 10.2, I encounter many errors as follows:
===========================================================
java.sql.SQLException: ORA-12899: value too large for column "ROGER"."ABB_FILE"."ABB04" (actual : 32, maximum: 30)
     at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:125)
     at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:305)
     at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:272)
     at oracle.jdbc.driver.T4C8Oall.receive(T4C8Oall.java:626)
     at oracle.jdbc.driver.T4CPreparedStatement.doOall8(T4CPreparedStatement.java:182)
     at oracle.jdbc.driver.T4CPreparedStatement.execute_for_rows(T4CPreparedStatement.java:630)
     at oracle.jdbc.driver.OracleStatement.doExecuteWithTimeout(OracleStatement.java:1081)
     at oracle.jdbc.driver.OraclePreparedStatement.executeInternal(OraclePreparedStatement.java:2905)
     at oracle.jdbc.driver.OraclePreparedStatement.execute(OraclePreparedStatement.java:2996)
     at oracle.mtg.migrationServer.LoadTableData._migrateTableData(LoadTableData.java:1473)
     at oracle.mtg.migrationServer.LoadTableData.run(LoadTableData.java:326)
     at oracle.mtg.migration.WorkerThread.run(Worker.java:268)
==========================================================
But when I check the Source column length, it is not long then column length in Oracle actually. I don't know why....
Does anybody have idea? Thanks!

Hi Donald,
Thanks for your reply.
"ROGER"."ABB_FILE"."ABB04" means in user "ROGER" schema, have a table "ABB04", and have a column named "ABB04".
So the column's name is "ABB04", not exceed 30 characters.
The table's description in Informix as follows:
create table "roger".abb_file
abb00 char(2),
abb01 char(12),
abb02 smallint,
abb03 char(24),
abb04 char(30),
abb05 char(6),
abb06 char(1),
abb07 decimal(16,3) not null ,
abb08 char(10),
abb11 char(15),
abb12 char(15),
abb13 char(15),
abb14 char(15),
abb15 char(4)
And the table in Oracle's description:
CREATE TABLE "ROGER"."ABB_FILE"
     "ABB00" VARCHAR2(2),
     "ABB01" VARCHAR2(12),
     "ABB02" NUMBER(5),
     "ABB03" VARCHAR2(24),
     "ABB04" VARCHAR2(30),
     "ABB05" VARCHAR2(6),
     "ABB06" VARCHAR2(1),
     "ABB07" NUMBER(16, 3) NOT NULL,
     "ABB08" VARCHAR2(10),
     "ABB11" VARCHAR2(15),
     "ABB12" VARCHAR2(15),
     "ABB13" VARCHAR2(15),
     "ABB14" VARCHAR2(15),
     "ABB15" VARCHAR2(4)
)

Migrating informix row type to Oracle 8i

I have ascii files of an informix database and was using the SQL
Loader to import these files into Oracle8i. Everything works
fine except for tables with row types.
In the Informix ascii files, I have columns containing a set of
values. eg {x,y,z}. How do I get the Oracle SQL loader to import
these row type columns into corresponding object types in my
Oracle 8i database?
Any information or case studies on this would be desired as
well. I already looked and the Oracle 8i Utilities documentation
doesn't have a case study for loading object types.

you may want to look into using Oracle's Migration Workbench that will take your Access database and then translate it to an XML file from which it then generates the DDL and SQL*Loader scripts for you (which you can always modify before running).
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We have to perform a migration from Informix 9.4 to Oracle 10g. Many tables, many data and many stored procs.
We use the Online mode and the imports finish with any errors, but it has not recovered any stored procedures or we can't view the Informix Stored Procedures in the Source Model in the workbench.
In the importation log appears as no found procedures, but under owner informix are all procedures.
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In the 10.1.0.4 version of the workbench we create an informix user who will have all the stored procedures.
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If this is a large migration, I would recommend the following.
1. generate the ddl for the oracle database.
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Migrate Informix 7.31 Database into Oracle

Dear all,
I intend to import an Informix Dynamic Server 7.31 Database into Oracle; In this case it's the database of an old system which is not in use anymore, so the purpose is strictly readonly.
No triggers, few procedures and functions.
I'd like to import the data into Oracle 11g, is this possible or do I have to import into 10g and then upgrade to 11g?
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Thanks in advance,
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Andy,
Informix can only be migrated using the older Oracle Migration Workbench 10.1.0.4 and as it says on the web site -
http://www.oracle.com/technetwork/database/migration/informix-085032.html
the only supported versions for the workbench are 9i and 10g.
However, this is only for running the workbench itself and creating the repository. If you do an offline migration then you can run the scripts created by the migration utility in any version of Oracle and load the data using any version of SQL*Loader.
It may be that you can create the repository for the 10.10.4 workbench in an 11g database but I've never tried it.
As for testing there is a section in the documentation -
Oracle® Migration Workbench User’s Guide Release 10.1.0.4 for Microsoft Windows 98/2000/NT/XP and Linux x86
Chapter 7 - Testing the Oracle Database
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If you have no triggers, few procedures and functions then it should be fairly straightforward.
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Regards,
Mike

Informix 7.x to Oracle 9i Data migration

Hi All,
I'm in the process of migrating the data from Informix 7.X databse to Oracle 9i. I need to migrate data from selected columns and selected tables only from the informix schema.The data migration deals with Huge volumes[ Around 50GB ] of data.
I need some help regarding
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2. how to deal with the memory issues during migration process.
Regards
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Hi,
Thanks a ton for the prompt response.
I'm elploring the usage of Migration Workbench for the migration.But yet don't know the correct way to use it.
I need some inputs and material to refer from this end.
Apart from that Regarding memory :
As I'm dealing with 50GB of data
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3) How can i do the migration in the quickest way?
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Hi,
I was unable to reproduce your problem. I carried out the following steps in attempt to replicate the issue:
1. I launched the workbench, version 10.1.0.2, selecting the Oracle Lite "Default Repository".
2. Using the Oracle Enterprise Manager Console, I created a user "rtdb" with the password "rtdb" on my target Oracle 9i database.
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5. My test database migrated with no such error messages reported.
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Hello,
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Hi,
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Is there any tool available to partially convert Informix 4GL
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Thanks...
null

Hi Nathalie,
We currently do not have such a tool within Oracle.
However, one of our MTI (Migration Technology Initiative)
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Go to the following URL
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Nathalie Ulken (guest) wrote:
: Is there any tool available to partially convert Informix 4GL
: Code to Oracle Packages/Procedures/Functions ?
: Thanks...
Oracle Technology Network
http://technet.oracle.com
null

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Hi All,
I'm in the process of migrating the data from Informix 7.X databse to Oracle 9i. I need to migrate data from selected columns and selected tables only from the informix schema.The data migration deals with Huge volumes[ Around 50GB ] of data.
I need some help regarding
1. I'm thinking to use Informix Unload Option for data unloading and SQL * loader for loading the data into the database. Is there any other better way.
2. how to deal with the memory issues during migration process.
3. What are best ways to reconcile such huge data.
Regards
Gaurav

Hi,
Thanks a ton for the prompt response.
I'm elploring the usage of Migration Workbench for the migration.But yet don't know the correct way to use it.
I need some inputs and material to refer from this end.
Apart from that Regarding memory :
As I'm dealing with 50GB of data
1) I want to foresee any problems which i might encounter during the migration process.
2) Any oracle specific parameters I need to setup to rule out any memory related migration failures.
3) How can i do the migration in the quickest way?
Kindly do the needful.
Regards
Gaurav Jain

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