How can I create a script of inserts for my sybase to oracle Migration? The Migration wizard only gives me the option to migrate procedures and triggers and such. But there is no select for just tables. When I try to migrate tables offline and move data. the datamove/ folder is empty. I would also want to only migrate specific tables (ones with long identifiers) because i was able to migrate the rest with Copy to Oracle.
I must also note that i do not want to upgrade to an new version of oracle. Currently on ~12.1 so i need to limit the identifiers.
How can I get the offline scripts for table inserts?
You (probably!) don't want INSERTs for offline migration scripts. If you're just running INSERTs, then the online method would probably suffice.
The point of the Offline strategy is to take the data from your Sybase instance to flat, delimited text files (using BCP), which we can THEN use to load back into an Oracle Database using SQLLDR or External Tables which will be EXPONENTIALLY faster than using INSERT scripts.
Take a look at this whitepaper where I go into offline Sybase migrations in detail.
You can consider DCO-based Sybase-to-Oracle replication via the Sybase Rep Server. This way, not only will you have all data moved, but you will also be able to have DML updates propagated online, which will make your system switchable live.
Related
I'm trying to export an Oracle DB using Oracle SQL Developer having tables, sequences, view, packages, etc. with dependencies on each other.
When I use Tools -> Database Export and select all DDL options, unfortunately the exported SQL file does not preserve the other that is some DB objects should be created before some other.
Is there a way to make the DB export utility preserve object dependencies/order? Or Is there any other tool do you use for this task?
Thank you
Normally expdp does a pretty good job. Problems arise when there are dependencies on objects/users that are not part of the dump. This is because the counter part, impdp, does not add grants on objects that are not created by impdp. I call that the 'not created by me syndrome' that impdp has.
If you have no external dependencies (external meaning to schema's that are not part of the dump), expdp/impdp do a good job for you. You might not be able to use it if you can not have access to the database server since expdp writes it's files on the database server.
If you happen to have access to a database server that is able to connect to the original database, you could pull the data over into your local database using a database link.
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.
I am a java person and not so much familiar with Oracle available features. Please help me.
The requirement is that, we are looking for some virtual(replica/mirror/view) database to be created from Production database just for testing purpose. Once we are done with executing all the automation test cases, delete the virtual database created. So are there any such concepts in Oracle ?
We are on Oracle 12c.
Many apps use same DB(its huge)
PS: We also use docker for deployment and also AWS.
use Rman duplicate to duplicate the test database from production.
https://oracle-base.com/articles/11g/duplicate-database-using-rman-11gr2
you can duplicate from backups or duplicate from active database
You can probably ask your database admin to export the table space to a new test machine which has the same oracle version installed. May require If there are only very few tables, then you can spool your tables out and use sqlloader to load them to a test database ( you will need to manually create the structure of the tables in test environment before hand.
In both cases, you might want to scrub out the sensitive information as per your requirements and standards.
I have an Oracle 12c Instance with a scheme 'wadmin' user, this instance has tables, view, data, triggers, sequences etc.
For quick spinning of docker images, I need to clone the db schema as fast as possible , so that I can create another user 'wadmin1' link it to new docker and start my testing.
Any CLI/tools for the same, does oracle provide any options?
I do not know if this is exacly what you are looking for but you can export your Oracle schema using ORACLE DataPump tool. This involves storing exported schema in the Oracle directory. While exporting schema to file you can transform the schema name, omit unnecessary tables or data etc. Exported files with database schema can be later used for imported to new database instance. More information regarding Oracle DataPump you can find here. https://oracle-base.com/articles/10g/oracle-data-pump-10g#SchemaExpImp.
Alternatively you can have scripts that create the database stored in the Git repository and integrate your builds with too called Flyway https://flywaydb.org/ which can be used to automatize of database schema creation. This is also really convenient from source control point of view. All changes on the schema are pull requested.
In my team we use OracleDataPump when we want to recreate the database together with the data, Flyway is used as a part of our continues integration.
I have a WPF application with back-end as Oracle11gR2. We need to enable our application to work in both online and offline(disconnected) mode. We are using Oracle standard edition(with single instance) as client database. I am using Sequnece Numbers for Primary Key Columns. Is there anyway to sync my client and server database without any issues in Sequence number columns. Please note that we will restrict creation of basic(master) data to be created only in server.
There are a couple of approaches to take here.
1- Write the sync process to rebuild the server tables (on the client) each time with a SELECT INTO. Once complete, RENAME the current table to a "temp" table, and RENAME the newly created table with the proper name. The sync process should DROP the temp table as one of its first steps. Finally, recreate the indexes and you should be good-to-go.
2- Create a backup of the server-side database, write a shell script to copy it down and restore it on the client.
Each of these options will preserve your sequence numbers. Which one you choose really depends on your skills. If you're more of a developer, you can make #1 work. If you've got some Oracle DBA skills you should be able to make #2 work.
Since you're on 11g, there might be a cleaner way to do this using Data Pump.