DB Migration from MYSQL to ORACLE Using Offline Capture

Hi
Am doing a database migration from MySQL to Oracle using SQL Developer (version 2.1.1.64). So far, I've successfully captured the MySQL database and converted it to the Oracle Model. However, when generating offline scripts to create the converted model schema into Oracle DDL scripts it managed to generate SQL to create: 1) User 2) Sequences 3) Tables 4) Triggers and 5) constraints.
It has created the SQL to add the primary key constraints and index constraints. Although it did the foreign key constraints in the SQL, the foreign key constraints seems to have missed the cascading options for the foreign key constraint. I.e. theres no reference of whether the foreign key constraint will restrict on delete or cascade etc.
We have a foreign keys in the MySql database that have different cascading options and these have not being ported over into the migration SQL. Therefore, all the foreign keys generated in the SQL by default are cascade to restrict on delete.
Does 'Generate Oracle DDL' not take into account a foreign key's on delete cascading option?
Any help or information would be greatly appreciated.
Thanks

Hello,
that reminded me for the following thread:
Migration Microsoft SQL Sever 2005 to Oracle 11g cascade on delete problem
That is a similar issue, isn't it?
I opened a bug for that, and it will be fixed in SQL Developer 3.1 (not in any 3.0 Early Adopter version). If you hit the same issue, there is no other way then using the workaround as used in the mentioned thread.
Regards
Wolfgang

Similar Messages

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can u tell me the steps to migrating database from MySQL to Oracle using SQL Developer?
I have installed Oracle 11g(11.1.0.6.0) in server and SQl Developer in my local system.
I connected to MySQL and Oracle in SQL Developer and tried to MIgrate everything in MySQL to Oracle using Quick Migrate option.
it took one and half day but didn't work at last...
is there any pre tasks that i need to do before migrating to oracle from MySQL?
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hi Turloch ,
I followed the steps mentioned above.
When I right click my MySQL server db Connection and click "Capture MySQL server", it just shows a dialog with "Close" enabled.
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oracle.dbtools.metadata.persistence.PersistableObject.doInsert(PersistableObject.java:238)
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Hi,
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reproduced and see exception in console, bug logged.
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Hi,
I'm trying migrate from mysql to oracle9i. The hardware and software requirements are matching or even much higher than mentioned in the documentation. I have installed OMWB is properly(hope so). When I try to migrate the desired database from mysql to oracle, the repository, the Oracle model are created successfully. But while migrating data, say for around 35000 rows insertion everything works pretty fine. But after sometime, the migration stops and no error or anything appears in the screen.And in the Errorlog I get "OutOfMemoryError".
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Hi Viji,
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([email protected]) explaining the problem, and attach the full error.log file please ? (please also copy me on the mail).
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I hope this helps,
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How to handle DATE type problems in migrating from mysql to oracle.?

Hi,
I'm migrating only the data from mysql to oracle with the help of sql loader.But with this type i cannot able to insert the date values from mysql to oracle.In mysql i have defined date as "DATETIME" type and in oracle it is in TimeStamp.Whenever i'm inserting the values thru CTL file ,i'm getting an error invalid date format entered.How to solve this problem?
Thanks in Advance
JAI

you need to supply a mask to the timestamp entry. see http://download-west.oracle.com/docs/cd/B19306_01/server.102/b14215/ldr_field_list.htm#i1006714 for details on datatypes within the ctl file
B

Issue during migrating from Sybase to Oracle using Oracle SQL Developer

I am using SQL Developer v 3.2.20.09 to migrate from Sybase to Oracle Pl/SQL 12c
While migrating the stored procedure the following block did not convert. I got NULL instead of object_id:
Sybase Block:
IF OBJECT_ID(‘dbo.CheckEst’) IS NOT NULL
BEGIN
DROP PROCEDURE dbo.CheckEst
IF OBJECT_ID(‘dbo.CheckEst’) IS NOT NULL
PRINT ‘<<>>’
ELSE
PRINT ‘<<>>’
END
Oracle Block after conversion:
BEGIN
IF NULL/*TODO:OBJECT_ID(‘dbo.CheckEst’)*/ IS NOT NULL THEN
BEGIN
DROP PROCEDURE CheckEst;
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Hi,
You are using an older version of SQL*Developer. Could you download the latest 4.0.2 version available from here -
Oracle SQL Developer
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Regards,
Mike

Problem in migrating huge data from mysql to oracle using OMWB.

I'm using OMWB to migrate my mysql db to oracle db.Mysql db contains some 43 tables and all of them were copied to oracle db except a table "as_db" which contains some 503 mb of data.The table contains 3 columns and two of them were integer type and one is of medium blob.While migrating i'm not getting any error.After migrating i opened the table in the oracle.The table alone created but there were no datas.But all other table contains data.
Then i generated the ctl file usiing SQL*loader for that particular table alone and tried to execute but it also fails by giving the Column size exceeds for blob.
How i handle this issue?
Thanks in Advance,
Jai.M

Looks like you may have to save you blobs out as files and load them individually thru the sqlldr process. I know this has normally been done thru raw to blob
What way is your blob data being saved out in the extract data file.
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Migrating from MySql to Oracle

Hi,
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Thanks,
Ashish Sohane.
OracleDirect.

I am having the same problem. I have deleted and recreated the repository many times. I'm getting:
"SQL Error on Script Execution. Try deleting repository before Creating Repository."
then
"The Repository installtaion has failed. Please check the user you are registering and make sure that objects of the same name do not already exist"
I have closed the connection and reopened, closed SQL Developer and reopened. When I expand Tables, there are NO md_ tables. So it seems the repository deletion is working. But when I try to recreate it, oracle somehow thinks the repository I deleted is still there.... even tho it doesn't show it in the ui.
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"Default " problem while migrating from mysql to oracle.

I'm migrating from mysql3.23 to oracle9i via the OMWB tool.While migrating i'm getting an error message "Failed to create default for the table <table>:ora00907 missing right parenthesis".This error is due to the difference in the syntax used for the keyword "default" in mysql and oracle.In mysql we have to give after the Not Null option whereas in oracle we have to give before Not Null.
The problem is i'm migrating via the OWMB tool.Is is possible to handle this error with the help of tool itself.
Thanks
Jai.M

Jai, I'm having Frank have a look at this for you to see if we can replicate it ans help solve this issue for you. are there any issues logged on the mysql site regarding saving blobs as file?
thanks
Barry

Migrating from MySQL to Oracle 11gR2 containing accented characters

Hello Gurus,
I am going to migrate a MySQL database that contains accented characters. The collation of the tables holding these data is utf8_unicode_ci.
I used SQLDeveloper to generate data migration scripts. After a test migration run, the web pages displays "?" instead of the accented character.
I am currently tracing where the problem is.
From what I have read, mysqldump uses utf8 as the default character set, so I assume the accented characters in <tablename>.txt files are in tact.
Could the problem be on sqlldr? Has anyone come across this problem?
I really would appreciate any help.
Thanks

Hi Srini, thanks for the reply.
here is the result of select * from nls_database_parameters;
PARAMETER VALUE
NLS_LANGUAGE AMERICAN
NLS_TERRITORY AMERICA
NLS_CURRENCY $
NLS_ISO_CURRENCY AMERICA
NLS_NUMERIC_CHARACTERS .,
NLS_CHARACTERSET AL32UTF8
NLS_CALENDAR GREGORIAN
NLS_DATE_FORMAT DD-MON-RR
NLS_DATE_LANGUAGE AMERICAN
NLS_SORT BINARY
NLS_TIME_FORMAT HH.MI.SSXFF AM
NLS_TIMESTAMP_FORMAT DD-MON-RR HH.MI.SSXFF AM
NLS_TIME_TZ_FORMAT HH.MI.SSXFF AM TZR
NLS_TIMESTAMP_TZ_FORMAT DD-MON-RR HH.MI.SSXFF AM TZR
NLS_DUAL_CURRENCY $
NLS_COMP BINARY
NLS_LENGTH_SEMANTICS BYTE
NLS_NCHAR_CONV_EXCP FALSE
NLS_NCHAR_CHARACTERSET AL16UTF16
NLS_RDBMS_VERSION 11.2.0.1.0

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

Whether using Oracle after migrating from MySQL be easy or not?

Though oracle is tough secured one, I don't know exactly the complexity of using Oracle database. Using MySQL 4.1.22 in my website https://www.puntercalls.com/ . Though the site is based on providing share market tips, it deals with a huge amount of stock market data and in much more real time basis hand-to-hand with NSE and BSE info which means a tough security is the utmost demand of the time.
My question is whether using Oracle after migrating from MySQL be easy or not. You can check my site at https://www.puntercalls.com/ for different real time data updation parts.
Kind suggestions are greatly appreciated in advance!
Edited by: 968684 on Oct 31, 2012 7:04 AM

Hi,
As you are really asking about how to setup and use securioty features in an Oracle database it woul db ebetter to raise the question in this forum -
Forum: Database Security - General
Database Security - General
They will have more knowledge about Oracle security features and which it would be best for you to use.
Regards,
Mike

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

Migrating from Sybase to Oracle

Hi!
Can someone tell me, how to migrate from Sybase to Oracle.
Thank U.

Hi,
You don't say if you have used the SQL*Developer migration workbench for the migration so far.
This has a feature for transferring data offline which should do what you want.
Have a look at the documentation linked from -
http://www.oracle.com/technology/tech/migration//workbench/index_sqldev_omwb.html
or at -
http://download.oracle.com/docs/cd/E12151_01/index.htm
SQL Developer User's Guide - section 2.9.1 Transferring the Data Offline
Regards,
Mike

Migration from MySql to Derby

I am currently migrating from MySql to Derby.
I have been developing a MRPII package for a while now and whilst my classes worked with MySql I am finding difficulty with implementing them using Derby.
I have developed a GUI interface for MRPII functions and use a Database Interface class to connect to the database.
The Database Interface class gives me the capability of reading and writing from a database.
I extend this capability to sub classes ie part, customers, suppliers, work orders.
The problem I have is with the ' "+standardCost+" ' type statements. In MySql, the database engine recognises that the standard cost variable is a double though using Derby I get the following Errors.
SQL Exception: Columns of type 'DOUBLE' cannot hold values of type 'CHAR'. In Save Data error code30000
SQL Exception: Columns of type 'DOUBLE' cannot hold values of type 'CHAR'. In Save Data error code30000
Executed statement INSERT INTO stock VALUES('BUDGET500','A1', '100.0','50.0','1.0','100.0')
Executed statement INSERT INTO part VALUES('BUDGET500', 'PENTIUM','76.0', '86.0','EACH','MP','7','33')
The only solution I see is giving each subclass of Database Interface the individual capability within that class to connect to the database and use prepared statements.
Does anyone know if Derby has the capability of processing the updates using a similar format as shown in my code.
package delta.databaseInterface;
import delta.databaseInterface.DatabaseInterface;
public class Part extends DatabaseInterface{
     private String partNumber;
     private String partType;
     private String description;
     private double standardCost;
     private double sellingPrice;
     private String stockLocation;
     private double quantityOnHand;
     private String unitOfMeasure;
     private double minimumStock;
     private double minimumOrderQuantity;
     private int leadTime;
     private double avaliableStock;
                     private int commodityCode;
     public void setPartNumber(String pn){
          this.partNumber = pn.toUpperCase();
     public void setDescription(String ds){
          this.description = ds.toUpperCase();
     public void setStandardCost(double sc){
          this.standardCost = sc;
     public void setSellingPrice(double sp){
          this.sellingPrice = sp;
     public void setQuantityOnHand(double qt){
          this.quantityOnHand = qt;
          this.avaliableStock = qt;
     public void setStockLocation(String sl){
          this.stockLocation = sl.toUpperCase();
     public void setUnitOfMeasure(String uom){
          this.unitOfMeasure = uom.toUpperCase();
     public void setTypeOfPart(String top){
          this.partType = top.toUpperCase();
     public void setMinimumStock(double ms){
          this.minimumStock= ms;
     public void setMinimumOrderQuantity(double moq){
          this.minimumOrderQuantity = moq;
     public void setLeadTime(int lt){
          this.leadTime = lt;
                     public void setCommodityCode(int cc){
          this.commodityCode = cc;
     public void insertIntoPartDatabase(){
       super.setDatabase("mrpii");
                       super.setUpdate( "INSERT INTO part VALUES('"+partNumber+"', '"+description+"','"+standardCost+"'," +
       " '"+sellingPrice+"','"+unitOfMeasure+"','"+partType+"','"+leadTime+"','"+commodityCode+"')");
                         super.saveData();
     public void insertIntoStockDatabase(){
        super.setDatabase("mrpii");
        super.setUpdate("INSERT INTO stock VALUES('"+partNumber+"','"+stockLocation+"',"+
" '"+quantityOnHand+"','"+minimumStock+"','"+minimumOrderQuantity+"','"+avaliableStock+"')");
                super.saveData();
     public void changePartDetails(){
        super.setDatabase("mrpii");
        super.setUpdate( "UPDATE part SET description = '"+description+"',unitOfMeasure = '"+unitOfMeasure+"',"+
          "partType = '"+partType+"' WHERE partNumber = '"+partNumber+"' ");
        super.saveData();
     public void adjustStock(){
          super.setDatabase("mrpii");
          super.setUpdate( "UPDATE stock SET stockLocation = '"+stockLocation+"',"+
          "avaliableStock = (('"+quantityOnHand+"' - qtyOnHand ) + avaliableStock), "+
          " qtyOnHand = '"+quantityOnHand+"' WHERE partNumber = '"+partNumber+"' ");
          super.saveData();
     public void insertAllocation(String allocationID, double quantity){
          super.setDatabase("mrpii");
          super.setQuery("INSERT INTO allocations VALUES('"+partNumber+"','"+quantity+"',"+
             " '"+allocationID+"')");
          super.saveData();
     public void reduceAvaliable(double allocated){
          super.setDatabase("mrpii");
          super.setUpdate( "UPDATE stock SET avaliableStock = (avaliableStock - '"+allocated+"') WHERE " +
          "partNumber = '"+partNumber+"' ");
          super.saveData();
     public void increaseAvaliable(double allocated){
          super.setDatabase("mrpii");
          super.setUpdate( "UPDATE stock SET avaliableStock = (avaliableStock - '"+allocated+"') WHERE " +
          "partNumber = '"+partNumber+"' ");
          super.saveData();
}Any help would be deeply appreciated
Thanks
Jim

I am currently migrating from MySql to Derby. Dear God, why?I am using the embedded functionality.
>
I have been developing a MRPII package for a whilenow
MRP as in "manufacturing resource planning"?Yes
>
and whilst my classes worked with MySql I am
finding difficulty with implementing them using
Derby.That suggests that your Java code relies too heavily
on MySQL features. You didn't make your code
portable enough.
I have developed a GUI interface for MRPIIfunctions
and use a Database Interface class to connect tothe
database.
The Database Interface class gives me thecapability
of reading and writing from a database.
I extend this capability to sub classes ie part,
customers, suppliers, work orders.
The problem I have is with the ' "+standardCost+"'
type statements. In MySql, the database engine
recognises that the standard cost variable is a
double though using Derby I get the following
Errors.Right - you're counting on something that might not
be true for all databases. MySQL appears to be doing
an implicit conversion from string to double. Bad
idea.
SQL Exception: Columns of type 'DOUBLE' cannothold
values of type 'CHAR'. In Save Data errorcode30000
SQL Exception: Columns of type 'DOUBLE' cannothold
values of type 'CHAR'. In Save Data errorcode30000
Executed statement INSERT INTO stock
VALUES('BUDGET500','A1',
'100.0','50.0','1.0','100.0')
Executed statement INSERT INTO part
VALUES('BUDGET500', 'PENTIUM','76.0',
'86.0','EACH','MP','7','33')Do you use PreparedStatements to escape strings and
dates for you? If not, you're in for a bumpy ride.
The only solution I see is giving each subclass of
Database Interface the individual capabilitywithin
that class to connect to the database and use
prepared statements.I would not have a single database interface. Each
class has its own requirements. How can a single
class know about all of them? Better to break your
persistence layer into several interaces, one per
persistent class.That is what I thought
>
Does anyone know if Derby has the capability of
processing the updates using a similar format as
shown in my code.I think your code is in trouble, Jim.Probably so, thought a redesign is not so much of a problem now as I am a bit more experienced than when I started out.
>
You don't use prepared statements, which would help
with your portability issues.
You have SQL embedded in the objects. I'd move it
out into a separate persistence layer.
You might want to read about Hibernate, an
object/relational mapping layer. You've got objects
and tables. Hibernate tools or Middlegen can
generate the XML mapping files for you. Once you
have those, you'll find that Hibernate will make
porting to another database a lot easier. It can be
as easy as changing configuration files.
I'd also look into Spring. It has some great
plumbing to help you deal with databases and lots of
other stuff.
%My main class is as follows;
package delta.databaseInterface;
* @author James Charles
import java.sql.SQLException;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.Statement;
import java.sql.ResultSet;
import java.sql.ResultSetMetaData;
import java.util.Vector;
import javax.swing.JTable;
public class DatabaseInterface{
     private String database;
     private String query;
                     private String update;
            private String[][] results = new String[0][0];
     private int columnCount = 0;
     private int rowCount = 0;
     private boolean resultsExist = false;
     Object data[][];
     private JTable table;
     public void setDatabase(String database){
          this.database = database;
     public void setQuery(String query){
          this.query = query;
            public void setUpdate(String update){
          this.update= update;
        public void saveData(){
          try{
          Class.forName("org.apache.derby.jdbc.EmbeddedDriver").newInstance();
          String sourceURL = new String("jdbc:derby:" + this.database);
          Connection databaseConnection = DriverManager.getConnection(sourceURL);
          Statement statement = databaseConnection.createStatement();
          statement. executeUpdate(this.update);
                databaseConnection.close();
          } // end of try
          catch(ClassNotFoundException cnfe){
               System.err.println(cnfe);
          catch(SQLException sqle){
               System.err.println(sqle + " In Save Data error code" + sqle.getErrorCode());
                         System.out.println("Executed statement " + this.query);
                catch(InstantiationException ie){
                    System.err.println(ie);
         catch(IllegalAccessException iae){
                    System.err.println(iae);
     public String getDatabase(){
          return this.database;
     public String getQuery(){
          return this.query;
     public void setResults(){
     try{
          Class.forName("org.apache.derby.jdbc.EmbeddedDriver").newInstance();
          String sourceURL = new String("jdbc:derby:" + this.database);
          Connection databaseConnection = DriverManager.getConnection(sourceURL);
          Statement statement = databaseConnection.createStatement();
          ResultSet thisResult = statement.executeQuery(this.query);
                databaseConnection.commit();
          System.out.println("Executed statement");
          convertToArray(thisResult);
          databaseConnection.close();
     } // end of try
     catch(ClassNotFoundException cnfe){
          System.err.println(cnfe);
     catch(SQLException sqle){
          System.err.println(sqle);
     catch(InstantiationException ie){
                    System.err.println(ie);
         catch(IllegalAccessException iae){
                    System.err.println(iae);
     public void convertToArray(ResultSet resultsIn) throws SQLException{
          this.resultsExist = false;
          String[] columnNames = new String[0];
          Vector dataRows = new Vector();
          ResultSetMetaData metadata = resultsIn.getMetaData();
          this.columnCount = metadata.getColumnCount();
          columnNames = new String[this.columnCount];
          for(int i = 0; i < this.columnCount; i++)
               columnNames[i] = metadata.getColumnLabel(i+1);
          String[] rowData = new String[this.columnCount]; // Stores one row
          while(resultsIn.next()){ // For each row...
               rowData = new String[this.columnCount]; // create array to hold thedata
                    for(int i = 0; i < this.columnCount; i++)// For each column
                    rowData[i] = resultsIn.getString(i+1); // retrieve the data item
                    dataRows.addElement(rowData); // Store the row in the vector
          this.results= new String[dataRows.size()][this.columnCount];
          this.data= new Object[dataRows.size()][this.columnCount];
          for(int column = 0; column < this.columnCount; column++)
               for(int row = 0; row < dataRows.size(); row++){
          this.results[row][column] = ((String[])(dataRows.elementAt(row)))[column];
          this.data[row][column] = ((String[])(dataRows.elementAt(row)))[column];
          this.rowCount = dataRows.size();
          try{
               if (results[0][0].equals(null)){ this.resultsExist = false;} //ckecks results
                    else {this.resultsExist = true;}
               catch (ArrayIndexOutOfBoundsException e){
               System.out.println(e + "in catch");
               this.resultsExist = false;
               System.out.println("Value of exists in catch = " + this.resultsExist);
     }// end of set results
     public JTable getTable(Object[] columnNames) {
          table = new JTable(data, columnNames);
          return table;
     public int getColumnCount(){
          return this.columnCount;
     public int getRowCount(){
          return this.rowCount;
     public String getData(int row, int column){
          return this.results[row][column];
     public boolean doResultsExist(){
          return this.resultsExist;
} // end of database InterfaceI developed this code about a year ago and maybe it is time to simplify it.
With MySql I could create an instance of Database Interface or use one of its subclasses and perform any function on the database by calling its methods.
maybe it is time for a redesign!
thanks
jim

DB Migration from MYSQL to ORACLE Using Offline Capture

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