I have an Oracle database on one PC. I have to migrate it to my other PC. Both use separate oracle installations. Now how can I export it from my one PC and then import it into other PC?
What are the commands for exporting and then importing it?
I want structure as well as data to be exported and then imported. I am using Oracle db.
You can export the data from your source database and import it into your new one.
A good link demonstrating the usage of these commands can be found here
It boils down to something like the following for exporting a full database:
%> exp USERID=<username>/<password> FULL=Y FILE=dbExport.dmp
%> imp USERID=<username>/<password> FILE=dbExport.dmp FULL=Y
There are a multitude of options for both commands to tailor it to your needs. For example, you can restrict the import command to only import certain tables via the TABLES parameter or you can move database object between users with TOUSER, FROMUSER parameters. There are also options on whether to export or import constraints, indexes, etc. You can find all the valid parameters for both commands by executing either:
%> exp help=Y
%> imp help=Y
You don't say which version of the database you are using. This is important information, because new features get added to Oracle with every release. For instance, in 10g Oracle introduced a new utility, DataPump, which replaces the older IMP and EXP (those utilities are still included in the install, they are just deprecated).
One of the neat things about DataPump is that we can execute from inside the database as well as from an OS command line. I recently posted an example of using DataPump from PL/SQL in this SO thread. `Oracle provide comprehensive documentation.
edit
Neither old fashioned IMP/EXP nor DataPump generate an SQL file (*). If that is really what you want (as opposed to just porting the schema and data somehow) then things get a bit trickier. Oracle has a package DBMS_METADATA which we can use to generate DDL scripts, but that won't deal with the data. To generate actual INSERT statements, your best bet is to use an IDE; Quest's TOAD will do this as will Oracle's (free) SQL Developer tool. Both IDEs will also generate DDL scripts for us.
(*) A Datapump import can derive the DDL statements from a prior Datapump export file, using the SQLFILE= parameter. But that is just the structure not the data.
Related
I want to export below things from SQL developer
1-Only schema (tables structure)
2-Only data in excel form
3-Schema with data
after exporting this i want to import the same to the another database
So what steps should i follow for export and import?
I can not use DATA PUMP as i don't have DBA privilege
As you use Oracle 11g, I'd suggest you to forget about SQL Developer and use the original EXP and IMP utilities. Doing so, you'd avoid DBA-related-problems as these utilities don't require access to the directory (an Oracle object which points to (usually database server's) filesystem directory, and - in order to be able to use it - you'd need to have read/write privileges on it).
So - if you don't already have these, install Oracle Client which contains EXP/IMP and use them.
Really would appreciate any help whatsoever on this one.
How to generate DDL from Application Express... including the actual data.
I can create a DDL; but one which contains none of the necessary inserts into the database tables. :<
There is no command console in Application Express.
You could use another tool, such as SQL Developer, which can export the data as INSERT statements; alternatively, use Oracle's schema export utility (expdp) which can either export just the data or the entire schema if you like.
We need to export an 11g database to get it into an 10g system. But we need to leave out a package, or at least some functions and procedures, that were accidentally implemented using 11g-only features.
Thankfully, the 10g is just a reporting database and we need only a few of the procedures that were implemented in 10g.
Any thoughts? I've seen some options for table-only exports, or selectively exporting certain tables. But we do need some of the procedures to come along.
I would recommend using expdp (data pump export) on the 11g database specifying the VERSION and INCLUDE parameters:
expdp dumpfile=10g.dmp directory=data_pump_dir version=10.2 INCLUDE=PROCEDURE:"LIKE '%XXX'"
This will produce a data pump export file that is compatible with the 10g version of data pump import and includes procedures ending in XXX.
Alternatively, you can use the EXCLUDE parameter instead of include to if you have just a few objects to exclude.
If you use INCLUDE, only those items you specify will be exported.
There are a lot of options for filtering objects using data pump export/import via the INCLUDE/EXCLUDE parameters.
i am newbie to oracle and i like to export database from remote database and import it on local machine. eOn both machines i have oracle 10.2.
I need to know how to export/import schema and data from oracle 10.2 using SQLDeveloper 3.0.0.4.
To export from remote database, i have used export Tool-> Database Export -> export wizard.
and at the end i have got only sql file with DDL and DML statements but somewhere in file it is written
"Cannot render Table DDL for object XXX.TABLE_NAME with DBMS_METADATA attempting internal generator error.
I have ignored previously mentioned message and tried to run those DDL and DML statements but all this ended up with errors.
Is it possible that all this tied with read-only database user? More over, i dont find any table under tables but also tables under other users in SqlDeveloper.
Thanks in advance
As a test, can you select one object in the tree, and navigate to the script panel? SQLDEV also uses DBMS_METADATA to generate those scripts.
Also, as a work-around, try using DataPump to export and import your data. It will be much more efficient for moving around larger schemas.
Your note about not seeing tables under indicates your schema doesn't actually own any tables. You may be working with synonyms that allow you to query objects as if they are in your account. You could be running into a privilege issue, but your error message doesn't indicate that. Error messages often come in bunches, and the very first one is usually the most important.
If you could try using the EXPORT feature say against a very simple schema like SCOTT as a test, this should indicate whether there is a problem with your account settings or with the software.
I'm not sure with SQL Developer 3.0 but with version 3.1 you can follow this:
SQL Developer 3.1 Data Pump Wizards (expdp, impdp)
I want to clone my existing oracle database structure without data including packages, users, tablespaces etc. I read some methods but they all copied data as well. Is there anyway out in order to do this?
Thanks in advance.
Use SQL Developer > Tools > Database Export..
On "Specify Data" do not include any tables.
Omit packages etc here,
Fine tune your selection here,
My trial export has not finished yet but I expect this will work.
Use Oracle exp.exe utility for export. E.g.
EXP.EXE login/password#TNSNAME file=entire_db.dmp owner=(scott, my_user, user2) rows=n grants=y triggers=y
Only rows=n option in command above make sense for your task.
You can import to target database with imp.exe utility.
Look for detailed option list and definition by running this utilities with help=y option.
BUT tablespaces and users on target databases must be created manually before running import.
There are no standard tablespace cloning tools (including SQL Developer), but some queries exists for generating such cloning scripts.
Examples can be found here and here.
P.S. This question better fits to ServerFault than to StackOverflow ...
You can do it in toad but its not free tool. (Database Tab->Export->Export DDL)
Try Oracle Export command with ROWS=N
exp SCOTT/TIGER ROWS=N TRIGGERS=N
Use SQL Developer, Tools > Database Export.
You will need to specify at least one table in the 'data' option because you cannot choose to NOT export any data. Pick a table that has a small number of rows or create a dummy table without any rows beforehand as a workaround.