Data from MySQL to Oracle

Hi All,
Can anyone please help, how can i establish database link from oracle to mysql via pl/sql developer or sth else?
thank you
Ugur

yes, It is possible if your Oracle database running in Windows.
You can do this by creating the ODBC connection.
Install ODBC driver 3.51 on Oracle box
Create userid on MySQL
Setup ODBC connection on Oracle box and test until OK
Check Listener, tnsnames and init.ora are setup as per documentation
Restart listener
Test tnsping until OK
Create public MySQL_DBLINK DBLink on Oracle (UserId and Password are case sensitive!!!)
Test "select count(*) from anytable@MySQL_DBLINK;"
Check this link to create ODBC connection,
http://www.dba-oracle.com/t_database_link_sql_server_oracle.htm
http://www.dba-oracle.com/t_heterogeneous_database_connections_sql_server.htm
Thanks

Similar Messages

Copy data from mysql to oracle database help?

Im an sql newb and trying to understand how I can automatically copy data from one dtabase to another systems database on the same server.
We have two differnt applications, but both share customer information, but one is on a win server, while the other is on oracle.
Each time a customer contacts us via online chat (win server, mysql), we want to copy their entire chat transcript into our CRM's (oracle) customer account. So the folks that use the CRM can see the past chat histories. I hope this makes sense.
Where can i look to get started on this?
Thanks

You could look at Heterogeneous Services (see the forum here Heterogeneous Connectivity but if you want to push data from mysql to oracle you might be better looking at it from the mssql side. I don't know what they offer.
It might be simpler to do it at the client end. ie cut and paste from the online chat application into a new utility which inserts into the oracle database.
Incidentally, this forum is specifically for the SQLDeveloper tool. You might get more general help in the "database - general" or "sql and pl/sql" forums

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.
Barry

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

Best practice for loading from mysql into oracle?

Hi!
We're planning migrating our software from mysql to oracle. Therefore we need a migration path for moving the customer's data from mysql to oracle. The installation and the data migration/transfer have to run onto different customer's enviroments. So migration ways like installing the oracle gateway and connect for example via ODBC to mysql are no option because the installation process gets more complicated... Also the installation with preconfigured oracle database has to fit on a 4,6 GB dvd...
I would prefer the following:
- spool mysql table data into flat files
- create oracle external tables on the flat files
- load data with insert into from external tables
Are there other "easy" ways of doing migrations or what do you think about the prefered way above?
Thanks
Markus

Hi!
Didn't anyone have this requirement for migrations? I have tested with the mysql select into file clause. Seems to work for simple data types - we're now testing with blobs...
Markus

Migrating from MySQL to Oracle 11g

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?
and also when i export the MySQL data to Oracle using SQL Developer,it is giving data type mismatch errors like (date, boolean etc...).
please give a reply what i need to do and any refferences also very much appreciated.

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.
after clicking the close button, it gives following error messages.
oracle.dbtools.metadata.persistence.PersistableObject.doInsert(PersistableObject.java:238)
the same error is coming no of times.
Kindly help me in this regard.

Out of memory error in migrating from mysql to oracle

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".
I tried to migrate single table also. But I still get this problem after sometime. The tables may contain from 10 - 130000 rows...
I even tried to change the %JRE..% memory value to 64M or 128M in the omwb.bat file and the O/s is Microsoft Windows XP, RAM 256MB.
Any help is much appreciated.
Thanks in advance.

Hi Viji,
did the message in the error.log provide any extra information? For example, was the OutOfMemory error prefixed with a string
like "cannot create new native thread" ? My suggestion to workaround the problem would have been to increase the JVM heap size to 128
but this appears to have been unsuccessful for you. Can you send a mail to the Migration Workbench support services
([email protected]) explaining the problem, and attach the full error.log file please ? (please also copy me on the mail).
In the meantime, you can workaround this by migrating the schema only (there is a switch on step 3 of the migration wizard asking:
"Do you want to migrate the table data to Oracle?" - just select the "No" option). When the schema has migrated, you can then use the
offline data loading facility to migrate the data. This uses data extraction scripts and SDQL*Loader to migrate the data to the target
Oracle database.You can learn more about the offline data loading facility from the plugins referenceguide (from the Help menu in
the Migration Workbench).
I hope this helps,
Tom.

Upload data from excel to oracle table

Hi,
if i'm user and using an application and i want to upload data from excel to oracle table on button click . Is it possible by using sql loader.
If yes then please clarify it .
is it possible from client end.
thanks
kam

Yes it is possible using SQL*LDR, External tables and ORCL Export Utility. Though I didn't try Export Utility to load the external files.
SQLLdr sysntax:
Create a control file.
It looks like this
Load data
Infile 'source.dat'
Into Table tablename
Fields terminated by ',' optionally enclosed by '"'
{code}
then use sqlldr command from your OS.
{code}
sqlldr userid/password@sid control = filename.ctl, data = source.dat, log = logname.log, bad = badname.log, discard = discardname.discard
{code}

Data From Excel to Oracle

Hi, how can I do a Stored Procedure or free code to import data from Excel to Oracle Table? Tanks for all.

I never use UTL_FILE. I use Delphi and I need to make a subrotine to import xls file to oracle. So, I prefer to do into DataBase, using database resource, but I do not oracle expertise, I have some difficulties. Tanks.

Data from Excel to Oracle DB

Hi,
I can upload data from excel to access having created stored procedure on access.
I do the upload using my vb code.
How can I upload data from excel to oracle db? could i use the same technique as above? only problem is im not sure if that vb code will work with oracle?
has anyone done this before? anyone have example code?
kindly assist me here
thanks

The easiest way to do this is to use a Oracle ODBC connection which can be found on OTN. You do not need a stored proc.
After installing Oracle ODBC on the machine where Excel and Access live, do the following.
Note, you already have steps 1, 2 and 3. I list all the steps for others.
1. Create your MS/Excel workbook
2. Add data to it.
3. Save it as "book1.xls".
4. Open MS/Access
5. Create new blank database, call it db1.
6. Then from the file menu, get external data, import, make sure the file type is xls, select book1.xls.
7. The wizard will walk you through the process of importing you Excel workbook into a new table.
8. Save
9. From the file menu select export table.
10. Select ODBC at the bottom of the "Save as type list".
11. Then (depending how you set up ODBC) select Machine Data Source.
12 . Select your Oracle ODBC connection and press OK.
You now have taken data from Excel to Access and placed it in the Oracle schema that was named when you setup your Oracle ODBC connection.
BG...

How to get the data from mysql database which is being accessed by a PHP application and process the data locally in adobe air application and finally commit the changes back in to mysql database through the PHP application.

How to get the data from mysql database which is being accessed by a PHP application and process the data locally in adobe air application and finally commit the changes back in to mysql database through the PHP application.

If the data is on a remote server (for example, PHP running on a web server, talking to a MySQL server) then you do this in an AIR application the same way you would do it with any Flex application (or ajax application, if you're building your AIR app in HTML/JS).
That's a broad answer, but in fact there are lots of ways to communicate between Flex and PHP. The most common and best in most cases is to use AMFPHP (http://amfphp.org/) or the new ZEND AMF support in the Zend Framework.
This page is a good starting point for learning about Flex and PHP communication:
http://www.adobe.com/devnet/flex/flex_php.html
Also, in Flash Builder 4 they've added a lot of remote-data-connection functionality, including a lot that's designed for PHP. Take a look at the Flash Builder 4 public beta for more on that: http://labs.adobe.com/technologies/flashbuilder4/

Generate Insert Statement Script to Extract Data from Table in Oracle 7i

Hi all, I have an old Oracle legacy system that is running for over 15 years.Every now and then we need to extract data from this table@ ORacle 7i to be imported back to Oracle 10G.
My thoughts are to create a script of Insert statements in oracle 7 and that to be deployed back to Oracle 10G.
I found this scripts in Google and not sure how exactly this works.Any explanation on thsi scripts , would be greatly appreciated.I find this scripst may help to generate a set of insert statements from that table to the latest table at 10G.
<pre>
-- Step 1: Create this procedure:
create or replace Function ExtractData(v_table_name varchar2) return varchar2 As
b_found boolean:=false;
v_tempa varchar2(8000);
v_tempb varchar2(8000);
v_tempc varchar2(255);
begin
for tab_rec in (select table_name from user_tables where table_name=upper(v_table_name))
loop
b_found:=true;
v_tempa:='select ''insert into '||tab_rec.table_name||' (';
for col_rec in (select * from user_tab_columns
where
table_name=tab_rec.table_name
order by
column_id)
loop
if col_rec.column_id=1 then
v_tempa:=v_tempa||'''||chr(10)||''';
else
v_tempa:=v_tempa||',''||chr(10)||''';
v_tempb:=v_tempb||',''||chr(10)||''';
end if;
v_tempa:=v_tempa||col_rec.column_name;
if instr(col_rec.data_type,'CHAR') > 0 then
v_tempc:='''''''''||'||col_rec.column_name||'||''''''''';
elsif instr(col_rec.data_type,'DATE') > 0 then
v_tempc:='''to_date(''''''||to_char('||col_rec.column_name||',''mm/dd/yyyy hh24:mi'')||'''''',''''mm/dd/yyyy hh24:mi'''')''';
else
v_tempc:=col_rec.column_name;
end if;
v_tempb:=v_tempb||'''||decode('||col_rec.column_name||',Null,''Null'','||v_tempc||')||''';
end loop;
v_tempa:=v_tempa||') values ('||v_tempb||');'' from '||tab_rec.table_name||';';
end loop;
if Not b_found then
v_tempa:='-- Table '||v_table_name||' not found';
else
v_tempa:=v_tempa||chr(10)||'select ''-- commit;'' from dual;';
end if;
return v_tempa;
end;
show errors
-- STEP 2: Run the following code to extract the data.
set head off
set pages 0
set trims on
set lines 2000
set feed off
set echo off
var retline varchar2(4000)
spool c:\t1.sql
select 'set echo off' from dual;
select 'spool c:\recreatedata.sql' from dual;
select 'select ''-- This data was extracted on ''||to_char(sysdate,''mm/dd/yyyy hh24:mi'') from dual;' from dual;
-- Repeat the following two lines as many times as tables you want to extract
exec :retline:=ExtractData('dept');
print :retline;
exec :retline:=ExtractData('emp');
print :retline;
select 'spool off' from dual;
spool off
@c:\t1
-- STEP3: Run the spooled output c:\recreatedata.sql to recreate data.
Source:http://www.idevelopment.info/data/Oracle/DBA_tips/PL_SQL/PLSQL_5.shtml
</pre>

Thanks Justin.
I get what you are saying,i really wanted to see the output of the codes, because the furtherst i could get from that code is
SELECT EXTRACTDATA('MYTABLE') FROM MYTABLE;
and it generated this:
"select 'insert into MYTABLE ('||chr(10)||'DATE1,'||chr(10)||'TIME1,'||chr(10)||'COUNTS) values ('||decode(DATE1,Null,'Null','to_date('''||to_char(DATE1,'mm/dd/yyyy hh24:mi')||''',''mm/dd/yyyy hh24:mi'')')||','||chr(10)||''||decode(TIME1,Null,'Null',TIME1)||','||chr(10)||''||decode(COUNTS,Null,'Null',COUNTS)||');' from MYTABLE;
select '-- commit;' from dual;"
"select 'insert into MYTABLE ('||chr(10)||'DATE1,'||chr(10)||'TIME1,'||chr(10)||'COUNTS) values ('||decode(DATE1,Null,'Null','to_date('''||to_char(DATE1,'mm/dd/yyyy hh24:mi')||''',''mm/dd/yyyy hh24:mi'')')||','||chr(10)||''||decode(TIME1,Null,'Null',TIME1)||','||chr(10)||''||decode(COUNTS,Null,'Null',COUNTS)||');' from MYTABLE;
select '-- commit;' from dual;"
"select 'insert into MYTABLE ('||chr(10)||'DATE1,'||chr(10)||'TIME1,'||chr(10)||'COUNTS) values ('||decode(DATE1,Null,'Null','to_date('''||to_char(DATE1,'mm/dd/yyyy hh24:mi')||''',''mm/dd/yyyy hh24:mi'')')||','||chr(10)||''||decode(TIME1,Null,'Null',TIME1)||','||chr(10)||''||decode(COUNTS,Null,'Null',COUNTS)||');' from MYTABLE;
select '-- commit;' from dual;"
"select 'insert into MYTABLE ('||chr(10)||'DATE1,'||chr(10)||'TIME1,'||chr(10)||'COUNTS) values ('||decode(DATE1,Null,'Null','to_date('''||to_char(DATE1,'mm/dd/yyyy hh24:mi')||''',''mm/dd/yyyy hh24:mi'')')||','||chr(10)||''||decode(TIME1,Null,'Null',TIME1)||','||chr(10)||''||decode(COUNTS,Null,'Null',COUNTS)||');' from MYTABLE;
select '-- commit;' from dual;"
"select 'insert into MYTABLE ('||chr(10)||'DATE1,'||chr(10)||'TIME1,'||chr(10)||'COUNTS) values ('||decode(DATE1,Null,'Null','to_date('''||to_char(DATE1,'mm/dd/yyyy hh24:mi')||''',''mm/dd/yyyy hh24:mi'')')||','||chr(10)||''||decode(TIME1,Null,'Null',TIME1)||','||chr(10)||''||decode(COUNTS,Null,'Null',COUNTS)||');' from MYTABLE;
select '-- commit;' from dual;"
"select 'insert into MYTABLE ('||chr(10)||'DATE1,'||chr(10)||'TIME1,'||chr(10)||'COUNTS) values ('||decode(DATE1,Null,'Null','to_date('''||to_char(DATE1,'mm/dd/yyyy hh24:mi')||''',''mm/dd/yyyy hh24:mi'')')||','||chr(10)||''||decode(TIME1,Null,'Null',TIME1)||','||chr(10)||''||decode(COUNTS,Null,'Null',COUNTS)||');' from MYTABLE;
select '-- commit;' from dual;"
I was expecting a string of
insert into mytable values (19/1/2009,1,1);
insert into mytable values (19/10/2008,5,10);
Thanks for the explanation .

Unable to connect to the server to pull data from mysql

Hello,
I am novice working with Flash Builder 4 and I just created a test application which runs well in my computer pulling data from Mysql using PHP and populating a datagrid. But when I transfered it to the my hosting provider failed. I have been doing some modifications to the gateway.php and amf.config.ini to solve some of the issues. Now the application try to run but doesn't populate the data in the datagrid. I included a tracking point in my data service file to read the connections variables, but they come up in blank. I highly appreciate any help. Here are my gateway.php, amf.config.ini and the data service.
gateway.php
<?php
ini_set("display_errors", 1);
$dir = dirname(__FILE__);
$webroot = $_SERVER['DOCUMENT_ROOT'];
$configfile = "$dir/amf_config.ini";
$fp = fopen("tracking.txt", "a");
fwrite($fp, "1-config file " . $configfile . "\r\n");
//default zend install directory
$zenddir = $webroot. '/ZendFramework/library';
//-$zenddir = $webroot;
fwrite($fp, "2-default zendir" . $zenddir . "\r\n");
//Load ini file and locate zend directory
if(file_exists($configfile)) {
     $arr=parse_ini_file($configfile,true);
     if(isset($arr['zend']['webroot'])){
          $webroot = $arr['zend']['webroot'];
          $zenddir = $webroot. '/ZendFramework/library';
     if(isset($arr['zend']['zend_path'])){
          $zenddir = $arr['zend']['zend_path'];
fwrite($fp, "3-after zendir" . $zenddir . "\r\n");
// Setup include path
//add zend directory to include path
set_include_path(get_include_path().PATH_SEPARATOR.$zenddir);
// Initialize Zend Framework loader
require_once 'Zend/Loader/Autoloader.php';
//-require_once 'Autoloader.php';
Zend_Loader_Autoloader::getInstance();
// Load configuration
$default_config = new Zend_Config(array("production" => false), true);
$default_config->merge(new Zend_Config_Ini($configfile, 'zendamf'));
$default_config->setReadOnly();
$amf = $default_config->amf;
fwrite($fp, "4- configfile" . $dafault_config["production"] . "\r\n");
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Zend_Registry::set("amf-config", $amf);
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$server = new Zend_Amf_Server();
$server->setProduction($amf->production);
if(isset($amf->directories)) {
     $dirs = $amf->directories->toArray();
     foreach($dirs as $dir) {
         // get the first character of the path.
         // If it does not start with slash then it implies that the path is relative to webroot. Else it will be treated as absolute path
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                   $server->addDirectory($webroot);
              }else{
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fwrite($fp, "5-temp path" . $tempPath . "=>" . "\r\n");
fwrite($fp, "******************************************" . "\r\n");
// Initialize introspector for non-production
if(!$amf->production) {
     $server->setClass('Zend_Amf_Adobe_Introspector', '', array("config" => $default_config, "server" => $server));
        $server->setClass('Zend_Amf_Adobe_DbInspector', '', array("config" => $default_config, "server" => $server));
// Handle request
echo $server->handle();
?>
amf.config.ini
[zend]
;set the absolute location path of webroot directory, example:
;Windows: C:\apache\www
;MAC/UNIX: /user/apache/www
;-webroot =c:/wamp/www/
webroot = /home/frutiexp/public_html
;set the absolute location path of zend installation directory, example:
;Windows: C:\apache\PHPFrameworks\ZendFramework
;MAC/UNIX: /user/apache/PHPFrameworks/ZendFramework
;zend_path = /home/frutiexp/public_html/ZendFramework
[zendamf]
amf.production = true
amf.directories[]=fb41/services
;amf.directories[]=./
CoursesService.php
<?php
* README for sample service
* This generated sample service contains functions that illustrate typical service operations.
* Use these functions as a starting point for creating your own service implementation. Modify the
* function signatures, references to the database, and implementation according to your needs.
* Delete the functions that you do not use.
* Save your changes and return to Flash Builder. In Flash Builder Data/Services View, refresh
* the service. Then drag service operations onto user interface components in Design View. For
* example, drag the getAllItems() operation onto a DataGrid.
* This code is for prototyping only.
* Authenticate the user prior to allowing them to call these methods. You can find more
* information at <link>
class CoursesService {
     var $username = "myusername";
     var $password = "mypassword"
     var $server = "localhost";
     var $port = "3306";
     var $databasename = "frutiexp_trainsur";
     var $tablename = "courses";
     var $connection;
      * The constructor initializes the connection to database. Everytime a request is
      * received by Zend AMF, an instance of the service class is created and then the
      * requested method is invoked.
     public function __construct() {
            $this->connection = mysqli_connect(
                                          $this->server,
                                          $this->username,
                                          $this->password,
                                          $this->databasename,
                                          $this->port
$fp = fopen("./tracking.txt", "a");
fwrite($fp, "1-service". $databasename . " " . $username . "\r\n");
fclose($fp);
          $this->throwExceptionOnError($this->connection);
      * Returns all the rows from the table.
      * Add authroization or any logical checks for secure access to your data
      * @return array
     public function getAllCourses() {
          $stmt = mysqli_prepare($this->connection, "SELECT * FROM $this->tablename");
          $this->throwExceptionOnError();
          mysqli_stmt_execute($stmt);
          $this->throwExceptionOnError();
          $rows = array();
          mysqli_stmt_bind_result($stmt, $row->cou_id, $row->cou_title, $row->cou_overview, $row->cou_objectives);
         while (mysqli_stmt_fetch($stmt)) {
           $rows[] = $row;
           $row = new stdClass();
           mysqli_stmt_bind_result($stmt, $row->cou_id, $row->cou_title, $row->cou_overview, $row->cou_objectives);
          mysqli_stmt_free_result($stmt);
         mysqli_close($this->connection);
         return $rows;
      * Returns the item corresponding to the value specified for the primary key.
      * Add authroization or any logical checks for secure access to your data
      * @return stdClass

Hello Jdesko,
Thank you for you prompt response. Yes, I have changed the connections variables in my dataservice ( I didn't post real values). You are right, after all I didn't make changes on the gateway.php except to add some tracking points. The one that I changed is the amf.config,ini. The application runs without any error exceptions, but don't populate the datagrid. According with the tracing is stoping just when establishing the connection to the database. Please let me know if you have any other clue. thanks

Read data from an external Oracle-DB: Codepage problems

Hi,
I try to get data from an external Oracle-DB which runs under NLS_CHARACTER
WE8ISO8859P1. In this DB are russian texte stored. If I read these texts via native-SQL I obviously get wrong characters. (e.g. Èíñòðóìåíòû äëÿ óãëîâîé øëèôîâàëüíîé ìàøèíû instead of Инструменты для угловой шлифовальной машины). If I save the text as a html file and then open it with IE. I can change the encoding and get the right view.
Has anybody got an idea ? (Mabye I can read the data in a different codepage or maybe there is a possibility to convert the codepage in SAP after reading it from oracle)
Thanks a lot !!!!

The problem is solved.
Many thanks !

Translating SQL from MYSQL to ORACLE with more than one outer join.

I will translate the following sqlquery from MYSQL to ORACLE:
SELECT ticket.ticket_no,ticket.ticket_dato,ticket.ticket_subject,ticket.customer_id,customer_name,ticket.ticket_own_read, ticket.department_id, department.department_name, priority_name, tickstat_name, tickettype_name
FROM customer, ticket left join department
on ticket.department_id = department.department_id left join priority on ticket.priority_id = priority.priority_id
left join ticketstatus on ticket.tickstat_id = ticketstatus.tickstat_id
left join tickettype on ticket.tickettype_id = tickettype.tickettype_id
where ticket.customer_id = customer.customer_id and customer.owner_id =
#session.owner_id#
I have tried in ORACLE with:
SELECT ticket.ticket_no,ticket.ticket_dato,ticket.ticket_subject,ticket.customer_id,customer_name,ticket.ticket_own_read, ticket.department_id, department.department_name, priority_name, tickstat_name, tickettype_name
FROM customer, ticket ,department, priority, ticketstatus, tickettype
where
ticket.department_id(+) = department.department_id and
ticket.priority_id(+) = priority.priority_id and
ticket.tickstat_id(+) = ticketstatus.tickstat_id and
ticket.tickettype_id(+) = tickettype.tickettype_id and
ticket.customer_id = customer.customer_id and customer.owner_id = #session.owner_id#
I get an error:
MERANT][ODBC Oracle driver][Oracle]ORA-01417: a table may be outer joined to at most one other table
How do I translate the code to ORACLE?

I think that your syntax is wrong. The (+) operator should be on the right hand table column, not the left hand table column if you want all rows on the left hand table column. If this syntax is really what you want, you can create underlying views for each join condiction.

Data from MySQL to Oracle

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