Migration from MySQL 5 to Oracle 10g

Hi All,
I'm currently trying to migrate a MySQL database to Oracle and have encountered a few issues, it appears to work fine for most of the tables, with a few errors occurring in the logs for other tables, but they look to be related to connection issues that I am encountering. Both the MySQL and Oracle Database are installed locally on my machine. Below is the exception. Any ideas why the migration would be working perfectly and then encountering the below problems?
Any help would be greatly appreciated. Thanks in advance. Also, should anyone need any further information regarding my system setup etc. don't hesitate to ask.
java.sql.SQLException MESSAGE: Communication link failure: java.io.EOFException, underlying cause: null ** BEGIN NESTED EXCEPTION ** java.io.EOFException STACKTRACE: java.io.EOFException at com.mysql.jdbc.MysqlIO.readFully(MysqlIO.java:1395) at com.mysql.jdbc.MysqlIO.reuseAndReadPacket(MysqlIO.java:1571) at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:1930) at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:1907) at com.mysql.jdbc.MysqlIO.nextRow(MysqlIO.java:998) at com.mysql.jdbc.MysqlIO.getResultSet(MysqlIO.java:305) at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:1326) at com.mysql.jdbc.MysqlIO.sqlQuery(MysqlIO.java:1225) at com.mysql.jdbc.Connection.execSQL(Connection.java:2278) at com.mysql.jdbc.Connection.execSQL(Connection.java:2225) at com.mysql.jdbc.Statement.executeQuery(Statement.java:1163) at oracle.dbtools.migration.datamove.online.DataMoveDrone.doDataMove(DataMoveDrone.java:359) at oracle.dbtools.migration.datamove.online.DataMoveDrone.run(DataMoveDrone.java:230) at java.lang.Thread.run(Thread.java:595) ** END NESTED EXCEPTION ** STACKTRACE: java.sql.SQLException: Communication link failure: java.io.EOFException, underlying cause: null ** BEGIN NESTED EXCEPTION ** java.io.EOFException STACKTRACE: java.io.EOFException at com.mysql.jdbc.MysqlIO.readFully(MysqlIO.java:1395) at com.mysql.jdbc.MysqlIO.reuseAndReadPacket(MysqlIO.java:1571) at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:1930) at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:1907) at com.mysql.jdbc.MysqlIO.nextRow(MysqlIO.java:998) at com.mysql.jdbc.MysqlIO.getResultSet(MysqlIO.java:305) at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:1326) at com.mysql.jdbc.MysqlIO.sqlQuery(MysqlIO.java:1225) at com.mysql.jdbc.Connection.execSQL(Connection.java:2278) at com.mysql.jdbc.Connection.execSQL(Connection.java:2225) at com.mysql.jdbc.Statement.executeQuery(Statement.java:1163) at oracle.dbtools.migration.datamove.online.DataMoveDrone.doDataMove(DataMoveDrone.java:359) at oracle.dbtools.migration.datamove.online.DataMoveDrone.run(DataMoveDrone.java:230) at java.lang.Thread.run(Thread.java:595) ** END NESTED EXCEPTION **
Kindest regards,
Harry

Hi,
Unfortunately now I am receiving a slightly different error, relating to the connection being closed due to a seemingly bad response from the MySQL server, where it expected a larger value than received. I have updated the Third Party JDBC drivers to the latest available.
The connection appears to drop and stop the data migration process, and it appears that this has stopped sooner than my previous attempt. Any help/advice would be greatly welcomed. I'll continue to investigate this on the web, but would assume this is the best possible resource for resolving these kind of problems.
Below is the stack trace received in the migration logs:
It is a particularly large one (sorry)
Failed to move data: No operations allowed after connection closed.Connection was implicitly closed due to underlying exception/error: ** BEGIN NESTED EXCEPTION ** com.mysql.jdbc.CommunicationsException MESSAGE: Communications link failure due to underlying exception: ** BEGIN NESTED EXCEPTION ** java.io.EOFException MESSAGE: Can not read response from server. Expected to read 23,493 bytes, read 9,268 bytes before connection was unexpectedly lost. STACKTRACE: java.io.EOFException: Can not read response from server. Expected to read 23,493 bytes, read 9,268 bytes before connection was unexpectedly lost. at com.mysql.jdbc.MysqlIO.readFully(MysqlIO.java:1997) at com.mysql.jdbc.MysqlIO.reuseAndReadPacket(MysqlIO.java:2464) at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:2916) at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:885) at com.mysql.jdbc.MysqlIO.nextRow(MysqlIO.java:1360) at com.mysql.jdbc.MysqlIO.readSingleRowSet(MysqlIO.java:2369) at com.mysql.jdbc.MysqlIO.getResultSet(MysqlIO.java:451) at com.mysql.jdbc.MysqlIO.readResultsForQueryOrUpdate(MysqlIO.java:2076) at com.mysql.jdbc.MysqlIO.readAllResults(MysqlIO.java:1451) at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:1787) at com.mysql.jdbc.Connection.execSQL(Connection.java:3277) at com.mysql.jdbc.Connection.execSQL(Connection.java:3206) at com.mysql.jdbc.Statement.executeQuery(Statement.java:1232) at oracle.dbtools.migration.datamove.online.DataMoveDrone.doDataMove(DataMoveDrone.java:359) at oracle.dbtools.migration.datamove.online.DataMoveDrone.run(DataMoveDrone.java:230) at java.lang.Thread.run(Thread.java:595) ** END NESTED EXCEPTION ** Last packet sent to the server was 88935 ms ago. STACKTRACE: com.mysql.jdbc.CommunicationsException: Communications link failure due to underlying exception: ** BEGIN NESTED EXCEPTION ** java.io.EOFException MESSAGE: Can not read response from server. Expected to read 23,493 bytes, read 9,268 bytes before connection was unexpectedly lost. STACKTRACE: java.io.EOFException: Can not read response from server. Expected to read 23,493 bytes, read 9,268 bytes before connection was unexpectedly lost. at com.mysql.jdbc.MysqlIO.readFully(MysqlIO.java:1997) at com.mysql.jdbc.MysqlIO.reuseAndReadPacket(MysqlIO.java:2464) at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:2916) at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:885) at com.mysql.jdbc.MysqlIO.nextRow(MysqlIO.java:1360) at com.mysql.jdbc.MysqlIO.readSingleRowSet(MysqlIO.java:2369) at com.mysql.jdbc.MysqlIO.getResultSet(MysqlIO.java:451) at com.mysql.jdbc.MysqlIO.readResultsForQueryOrUpdate(MysqlIO.java:2076) at com.mysql.jdbc.MysqlIO.readAllResults(MysqlIO.java:1451) at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:1787) at com.mysql.jdbc.Connection.execSQL(Connection.java:3277) at com.mysql.jdbc.Connection.execSQL(Connection.java:3206) at com.mysql.jdbc.Statement.executeQuery(Statement.java:1232) at oracle.dbtools.migration.datamove.online.DataMoveDrone.doDataMove(DataMoveDrone.java:359) at oracle.dbtools.migration.datamove.online.DataMoveDrone.run(DataMoveDrone.java:230) at java.lang.Thread.run(Thread.java:595) ** END NESTED EXCEPTION ** Last packet sent to the server was 88935 ms ago. at com.mysql.jdbc.MysqlIO.reuseAndReadPacket(MysqlIO.java:2622) at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:2916) at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:885) at com.mysql.jdbc.MysqlIO.nextRow(MysqlIO.java:1360) at com.mysql.jdbc.MysqlIO.readSingleRowSet(MysqlIO.java:2369) at com.mysql.jdbc.MysqlIO.getResultSet(MysqlIO.java:451) at com.mysql.jdbc.MysqlIO.readResultsForQueryOrUpdate(MysqlIO.java:2076) at com.mysql.jdbc.MysqlIO.readAllResults(MysqlIO.java:1451) at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:1787) at com.mysql.jdbc.Connection.execSQL(Connection.java:3277) at com.mysql.jdbc.Connection.execSQL(Connection.java:3206) at com.mysql.jdbc.Statement.executeQuery(Statement.java:1232) at oracle.dbtools.migration.datamove.online.DataMoveDrone.doDataMove(DataMoveDrone.java:359) at oracle.dbtools.migration.datamove.online.DataMoveDrone.run(DataMoveDrone.java:230) at java.lang.Thread.run(Thread.java:595) ** END NESTED EXCEPTION **
Failed to get source row count. Proceeding with unknown (No operations allowed after connection closed.Connection was implicitly closed due to underlying exception/error: ** BEGIN NESTED EXCEPTION ** com.mysql.jdbc.CommunicationsException MESSAGE: Communications link failure due to underlying exception: ** BEGIN NESTED EXCEPTION ** java.io.EOFException MESSAGE: Can not read response from server. Expected to read 23,493 bytes, read 9,268 bytes before connection was unexpectedly lost. STACKTRACE: java.io.EOFException: Can not read response from server. Expected to read 23,493 bytes, read 9,268 bytes before connection was unexpectedly lost. at com.mysql.jdbc.MysqlIO.readFully(MysqlIO.java:1997) at com.mysql.jdbc.MysqlIO.reuseAndReadPacket(MysqlIO.java:2464) at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:2916) at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:885) at com.mysql.jdbc.MysqlIO.nextRow(MysqlIO.java:1360) at com.mysql.jdbc.MysqlIO.readSingleRowSet(MysqlIO.java:2369) at com.mysql.jdbc.MysqlIO.getResultSet(MysqlIO.java:451) at com.mysql.jdbc.MysqlIO.readResultsForQueryOrUpdate(MysqlIO.java:2076) at com.mysql.jdbc.MysqlIO.readAllResults(MysqlIO.java:1451) at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:1787) at com.mysql.jdbc.Connection.execSQL(Connection.java:3277) at com.mysql.jdbc.Connection.execSQL(Connection.java:3206) at com.mysql.jdbc.Statement.executeQuery(Statement.java:1232) at oracle.dbtools.migration.datamove.online.DataMoveDrone.doDataMove(DataMoveDrone.java:359) at oracle.dbtools.migration.datamove.online.DataMoveDrone.run(DataMoveDrone.java:230) at java.lang.Thread.run(Thread.java:595) ** END NESTED EXCEPTION ** Last packet sent to the server was 88935 ms ago. STACKTRACE: com.mysql.jdbc.CommunicationsException: Communications link failure due to underlying exception: ** BEGIN NESTED EXCEPTION ** java.io.EOFException MESSAGE: Can not read response from server. Expected to read 23,493 bytes, read 9,268 bytes before connection was unexpectedly lost. STACKTRACE: java.io.EOFException: Can not read response from server. Expected to read 23,493 bytes, read 9,268 bytes before connection was unexpectedly lost. at com.mysql.jdbc.MysqlIO.readFully(MysqlIO.java:1997) at com.mysql.jdbc.MysqlIO.reuseAndReadPacket(MysqlIO.java:2464) at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:2916) at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:885) at com.mysql.jdbc.MysqlIO.nextRow(MysqlIO.java:1360) at com.mysql.jdbc.MysqlIO.readSingleRowSet(MysqlIO.java:2369) at com.mysql.jdbc.MysqlIO.getResultSet(MysqlIO.java:451) at com.mysql.jdbc.MysqlIO.readResultsForQueryOrUpdate(MysqlIO.java:2076) at com.mysql.jdbc.MysqlIO.readAllResults(MysqlIO.java:1451) at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:1787) at com.mysql.jdbc.Connection.execSQL(Connection.java:3277) at com.mysql.jdbc.Connection.execSQL(Connection.java:3206) at com.mysql.jdbc.Statement.executeQuery(Statement.java:1232) at oracle.dbtools.migration.datamove.online.DataMoveDrone.doDataMove(DataMoveDrone.java:359) at oracle.dbtools.migration.datamove.online.DataMoveDrone.run(DataMoveDrone.java:230) at java.lang.Thread.run(Thread.java:595) ** END NESTED EXCEPTION ** Last packet sent to the server was 88935 ms ago. at com.mysql.jdbc.MysqlIO.reuseAndReadPacket(MysqlIO.java:2622) at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:2916) at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:885) at com.mysql.jdbc.MysqlIO.nextRow(MysqlIO.java:1360) at com.mysql.jdbc.MysqlIO.readSingleRowSet(MysqlIO.java:2369) at com.mysql.jdbc.MysqlIO.getResultSet(MysqlIO.java:451) at com.mysql.jdbc.MysqlIO.readResultsForQueryOrUpdate(MysqlIO.java:2076) at com.mysql.jdbc.MysqlIO.readAllResults(MysqlIO.java:1451) at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:1787) at com.mysql.jdbc.Connection.execSQL(Connection.java:3277) at com.mysql.jdbc.Connection.execSQL(Connection.java:3206) at com.mysql.jdbc.Statement.executeQuery(Statement.java:1232) at oracle.dbtools.migration.datamove.online.DataMoveDrone.doDataMove(DataMoveDrone.java:359) at oracle.dbtools.migration.datamove.online.DataMoveDrone.run(DataMoveDrone.java:230) at java.lang.Thread.run(Thread.java:595) ** END NESTED EXCEPTION ** )
== 2nd Stack Trace received further down in the logs before the process bombs out altogether from the lack of response from the MySQL database ==
Failed to move data: Communications link failure due to underlying exception: ** BEGIN NESTED EXCEPTION ** java.io.EOFException MESSAGE: Can not read response from server. Expected to read 23,493 bytes, read 9,268 bytes before connection was unexpectedly lost. STACKTRACE: java.io.EOFException: Can not read response from server. Expected to read 23,493 bytes, read 9,268 bytes before connection was unexpectedly lost. at com.mysql.jdbc.MysqlIO.readFully(MysqlIO.java:1997) at com.mysql.jdbc.MysqlIO.reuseAndReadPacket(MysqlIO.java:2464) at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:2916) at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:885) at com.mysql.jdbc.MysqlIO.nextRow(MysqlIO.java:1360) at com.mysql.jdbc.MysqlIO.readSingleRowSet(MysqlIO.java:2369) at com.mysql.jdbc.MysqlIO.getResultSet(MysqlIO.java:451) at com.mysql.jdbc.MysqlIO.readResultsForQueryOrUpdate(MysqlIO.java:2076) at com.mysql.jdbc.MysqlIO.readAllResults(MysqlIO.java:1451) at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:1787) at com.mysql.jdbc.Connection.execSQL(Connection.java:3277) at com.mysql.jdbc.Connection.execSQL(Connection.java:3206) at com.mysql.jdbc.Statement.executeQuery(Statement.java:1232) at oracle.dbtools.migration.datamove.online.DataMoveDrone.doDataMove(DataMoveDrone.java:359) at oracle.dbtools.migration.datamove.online.DataMoveDrone.run(DataMoveDrone.java:230) at java.lang.Thread.run(Thread.java:595) ** END NESTED EXCEPTION ** Last packet sent to the server was 88935 ms ago.
Thanking you in advance.
Kindest regards,
Harry

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Take system copy of the system you want to migrate ( you could choose a development system where there is not much data)
Delete data the production clients in the copied system.
Archive some data using object something like WORKITEM which is harmless workflow object.
Migrate the system and try to reload the object
Hope that helps.
Regards,
Siddhesh

Migration from Oracle9i to Oracle 10g

Hi All,
Is anyone aware of exact differences between Oracle 9i and 10G?
Can some one point me to any URL where I can find exact list of difference between Oracle 9i and 10G?
Thanks in advance.
Regards
Ninad K

Hi,
There are so many differences.
You can start to have a look to the doc: Oracle® Database New Features Guide 10g Release 2 (10.2)
http://download.oracle.com/docs/cd/B19306_01/server.102/b14214/toc.htm
I hope it helps you.
Regards
Mireille

Problems using Quick Migrate in SQL Developer 1.5 for MySQL to Oracle 10g

Hi all,
I am trying to use SQL Developer 1.5 migration tools (Quick Migrate) to perform online capture and build source model to migrate from MySQL 5.x to Oracle 10g on Windows platform. I get these errors and the Quick Migrate process fails:
oracle.dbtools.metadata.persistence.PersistableObject.doInsert(PersistableObject.java:238)
I did a search and used the sqldeveloper.cmd script but still fails. Then I created a new database and truncated the repository. I now get the above error plus two new ones listed below:
oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:112)
Error loading nls:OALL8 is in an inconsistent state
Error occurred during capture: Protocol violation
It fails during the capture process for MySQL 5.1 database
when it begins to capture the tables from MySQL.
Does anyone know how to resolve these issues when migrating from MySQL to Oracle 10g using Quick Migrate with SQL Developer 1.5 release?
Regards,
Ben Prusinski
Message was edited by:
benprusinski
Message was edited by:
benprusinski

Hi all,
I put the following in my sqldeveloper.cmd file:
SET ORACLE_HOME=%CD%
What is very confusing is that with SQL Developer 1.5, there are several levels and several SQL Developer executables! I am really not sure which of these to use:
I created the SQLDeveloper 1.5 directory called SQLDeveloper1_5 on Windows:
1) cd C:\sqldeveloper1_5\sqldeveloper-5338
there exists a sqldeveloper.exe
2) cd c:\sqldeveloper1_5\sqldeveloper-5338\sqldeveloper\sqldeveloper.exe
3) cd c:\sqldeveloper1_5\sqldeveloper-5338\sqldeveloper\sqldeveloer\bin\sqldeveloper.exe
Which SQLDeveloper 1.5 executable should I be using and where should I place the
sqldeveloper.cmd file?
Also I did try to use a different database and schema for the repository with Quick Migrate but it appears a bug exists in SQL Developer 1.5 version that causes errors with Quick Migrate for MySQL to Oracle? Is this correct?
As an update, I ran the following commands:
cd to
c:\sqldeveloper1_5\sqldeveloper-5338\sqldeveloper\sqldeveloper\bin
sqldeveloper.cmd sqldeveloper.exe
Start sqldeveloper.exe
Perform standard capture for MySQL using the new mig2 schema as the new repository
It starts the capture but fails on the errors below:
Error loading nls:OALL8 is in an inconsistent state
UPDATE
============================
I tried this again and it worked with the exception of one error message listed below:
Here are the steps that I followed:
1. Create a Windows cmd script
Put the following entries in the script:
SET ORACLE_HOME=%CD%
save the command windows script as sqldeveloper.cmd
Copy this script to the base installation directory for SQLDeveloper
Example:
1. cd c:\SQLDeveloper1_5\sqldeveloper-5338\sqldeveloper
2. Start SQLDeveloper with the command script that you created earlier
Example:
Open a Windows shell prompt window and execute the following scripts:
a) sqldeveloper.cmd sqldeveloper.exe
b) sqldeveloper.exe
3) In SQL Developer 1.5
From the Migrate menu,
a) Delete current repository and create a new schema in Oracle target database call it mig2.
b) Then create a new repository in SQL Developer 1.5
c) Right mouse click on the MySQL 5.x database and choose capture
It worked with the exception of one error message:
o.jdbc.driver.OracleDriver
Error while registering Oracle JDBC Diagnosability MBean.
So it looks like something is screwed up with my JDBC drivers and configuration for MySQL. How do I diagnose the JDBC driver issue for MySQL?
Thanks!!!
Ben
Thanks
Ben

Migration from MySQL - connection problem

I've just installed OMWB 1.3.1 for WINDOWS and created repository in ORACLE 8.0.5 DB.
When I enter Source Database Details in Capture Wizard and push Next button nothing is happened. In OMWB log-file I've found the following message among many others:
Exception occurred during event dispatching:
java.lang.NoClassDefFoundError: org/gjt/mm/mysql/Driver
at java.util.Vector.<init>(Vector.java:128)
The directory C:\Oracle\oracle81\Omwb\drivers\
is empty while in CLASSPATH env variable I've found the following item:
C:\Oracle\oracle81\Omwb\drivers\mm.mysql.jdbc-1.2a
If anybody could help me to solve this problem, please let me know.
Thank you in advance.
null

Hi Vladimir,
I send you a message from the Migration Workbench team that solved my problem. I hope this will resolve yours too.
Bye,
Pierfrancesco
Hi Pierfrancesco
MySQL 3.22, 3.23 Requirements
In order to migrate from MySQL to Oracle, you must install the MM MySQL JDBC
driver release 1.2a on the same system as the Migration Workbench. You can
obtain this by downloading the MM MySQL JDBC driver from the WorldServer Web
site at:
http://www.worldserver.com/mm.mysql
Copy and unzip the mm.mysql.jdbc-1.2a.zip file to your
%ORACLE_HOME%\Omwb\drivers directory. This automatically creates a new
directory called
mm.mysql.jdbc-1.2a within the drivers directory.
Can you please verify that you have this driver extracted to the above
specified directory. Another check you can do is see whether all the files in
the zip
have extracted.
Please refer to the Release notes which you have access to by selection the Help
drop down menu in the Workbench.
I hope this helps
Best regards
Oracle Migration Workbench Support
null

Problems while migrating from mySql DB to oracle DB

Hi All,
I'm using sql developer tool to migrate from MySql DB to oracle DB. I followed the below steps.
1) I've created oracle and mysql connections successfully.
2) I've captured Mysql data and I'm able to see the captured model in ' Captured Models ' window. After that right clicked on the captured model and selected ' Set Data Mapping'. Selected ' apply ' button without changing anything. After that I've right clicked on the captured model and selected ' Convert to Oracle Model ' . It has shown the converting process. After some time it has shown conversion completed successfully.
But converted model is not visible in ' Converted Models ' window.
Can anyone kindly assist on how to migrate from MySql Db to Oracle DB?
Thanks,
Saty.

Hi,
We did mysql to oracle migration some time back and played with workbench tool and many other softwares available.
However our experience was not so good with these tools, each tool had its own limitation and was not able to migrate 100% data. Even the speed of migration was too slow which would have violated our production SLAs.
So after spending a month with these tools we finally decided to create our own scripts for data migration. We used tools like TOAD and SQL Yok to create the DDL for the tables and other DB objects.
For the data migration we downloaded the mysql data in flat files and used sql loader to upload the same data in oracle. Even if this was a time consuming activity but this resulted in 100% data migration with no record getting failed and the time taken for this activity was around 6 Hrs in comparison to time of 24-28 Hrs that the workbench tool took.
Amar

Migration from MySQL 5 to Oracle 10g

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