Is it possible to transfer data from non-relational databases to relational database systems? I have data in an access database and I want to export it to a relation oracle database. If possible, how do i set up the relations between various tables? Thanks
To connect to Oracle with MS-Access.
Step 1: Prepare the MS-Access environment
Step 2: Define ODBC connectivity
Step 3: Prepare the Oracle Environment
Step 4: Configure and Start the Oracle Listener
Step 5: Configure Oracle HS:
Step 6: Configure Oracle connectivity to Windows Machine
Step 7: Create a database link
This article shows how Oracle's Heterogeneous Services can be configured to allow a database to connect to a Microsoft Access database using standard databases links.
http://www.orafaq.com/node/60
To migrate a Microsoft Access Database to Oracle Database 11g read the following link
http://www.oracle.com/webfolder/technetwork/tutorials/obe/db/hol08/sqldev_migration/msaccess/migrate_microsoft_access_otn.htm
Related
Data was sent to our company with PostgreSQL, but we are prohibited to use the tools of PostgreSQL , permitted the use of only Oracle.
How to migrate data from PostgreSQL to Oracle without using a third party application(they are also prohibited)? You can only use the tools of Oracle.
I found this article https://support.oracle.com/knowledge/Oracle%20Database%20Products/2220826_1.html but we don't have Support Identifier
We have one .sql file. It weighs 8 Gigabytes.
It looks like you have so many impediments in your company. Regarding Oracle's SQL Developer Migration Workbench, unfortunately it does not support the migration of PostgreSQL databases. However, the following 3rd-party software tools are available and may assist in migration, but I am afraid you cannot use them as you said that those products are forbidden:
http://www.easyfrom.net/download/?gclid=CNPntY36vsQCFUoqjgodHnsA0w#.VRBHKGPVuRQ
http://www.sqlines.com/postgresql-to-oracle
Other options will only move the data from your Postgresql database to Oracle database, it means that you must have the DDLs of the tables before to run the import:
To move data only, you can generate a flat file of the the
PostgreSQL data and use Oracle SQL*Loader.
Another option to migrate data only is to use Oracle Database
Gateway for ODBC which requires an ODBC driver to connect to the
PostreSQL database, and copy each table over the network using
sqlplus "COPY" or "CREATE TABLE AS SELECT" commands via oracle
database link.
Also, Oracle has discussion forum for migrating non-oracle databases to Oracle.
http://www.oracle.com/technetwork/database/migration/third-party-093040.html
But, if you have only a sql file, you should look at it to see whether you have both DDLs ( create tables and indexes, etc ) and the data itself as insert statements. If so, you need to split it and treat the DDLs to convert the original data types to Oracle datatypes.
There is one scenario where in our target is to migrate oracle database to Azure SQL DB.
Currently I am evaluating multiple options to migrate the existing Oracle Db to the Azure SQL DB, for the same reason I could not decide how to handle this situation where in the source DB i.e. Oracle is having transaction data which is a kind of incremental load.
Should this can be handled with mere replication of DB? or performing some data migration steps would help me ? Here i can think of earlier approach as easier approach where in i need not to worry about the transaction updates happening inside the data.
Considering this which utility i should use to perform this kind of activity?
You can replicate your Oracle database to Azure using Oracle Golden Gate as a way to migrate your Oracle database to Azure SQL. Striim seems to be another good tools to move your database to Azure SQL.
I think you may use the SQL Server Migration Assistant (SSMA) for Oracle.
SQL Server Migration Assistant (SSMA) for Oracle consists of a client application that you use to perform a migration from Oracle to SQL Server and Azure SQL DB. It also contains an extension pack that supports data migration and the use of Oracle system functions in your migrated databases.
SSMA can converts the transaction processing:
For more details, you can see:SQL Server Migration Assistant (SSMA) for Oracle
Hope this helps!
I'm trying to establish a connection to a DB2 database using a database link in Oracle.
The final objective is to be able to do a "create table XXX as select * from YYY#DB2"
I can connect directly to the DB2 database using SQL Developer and the db2jcc.jar connector but i can't create the database link.
Additionaly, when i use the feature "Migrate to Oracle..." on SQL Developer it just dump a java exception.
Thanks in advance,
Manuel
One way of doing this is with "heterogenous services", ie, Oracle takes via ODBC to a remote non-oracle data source.
There's a manual for this in the standard doc set:
https://docs.oracle.com/en/database/oracle/oracle-database/12.2/heter/index.html
but in a nutshell, the basic steps are:
1) have an ODBC driver for DB2 on your database server, or on a machine that your database server can reach.
2) Configure an ODBC target for that DB2 database. Lets call it "MYDB2"
3) create a file initMYDB2.ora in $ORACLE_HOME/hs/admin. Configure it as per the sample (init4g4odbc.ora). It points to your MYDB2 target.
4) In that directory, you'll also find samples for listener.ora and tnsnames.ora.
So you'll end up with a tnsnames entry called "MYDB2". It will reference the initMYDB2.ora, which will point to the MYDB2 odbc target, which will be your DB2 database.
Then you create a database link in the normal way:
create database link blah
connect to my_db2_user
identified by my_db2_password
using 'mydb2';
Hope this helps.
We have two divisions in our company, one uses E1 on Oracle 11g the other uses SAP on Oracle 11g.
We also have a SQL Server system we use to data warehouse information once a night from both system to run our report server against.
The question I have is for pooled tables in SAP, such as A016, how would I get that information out of SAP?
Currently we have SSIS's setup with a linked server to the two Oracle servers which pull the data we need I just don't have the knowledge of SAP to find the Pooled tables.
if I can't pull the pooled tables because they don't physically exist is there a tool I can use in SAP to find out what tables the pooled table is getting it's information from? This way I can rebuild that table in SQL using a open query and some fun Joins.
Thanks
You have to access those tables using the application server. They can't be accessed directly from the database.
You'll probably want to write an ABAP program to extract the data you need go from there.
I have two different databases, one is in sql server and one is in oracle. i create a linked server between those two. how can i get data from oracle without the option "openquery".
Please help me out this.
You can create a connection link in oracle and then you can access the sql server database
see: Oracle connection link