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18.04.2015
Offline Normal: A tablespace can be taken offline normally if no error conditions exist for any of the datafiles of the tablespace. Offline Temporary: A tablespace can be taken offline temporarily, even if there are error conditions for one or more files of the tablespace. Offline Immediate: A tablespace can be taken offline immediately, without the database taking a checkpoint on any of the datafiles.
If you absolutely have to take a tablespace offline then you should use the NORMAL clause (default) if possible. In case you are creating a temporary and undo tablespace then this step is not necessary as it involves compression of tablespace which can only be done in permanent tablespace unlike undo or temporary tablespace. Creative Commons License? ???? ?????? ??? ??? ?????-???-???????? 2.0 ???? ????? ?? ???? ? ????. CREATE TABLESPACE 'tablespace name' DATAFILE 'path - check the path of listed tablespaces' SIZE ?
Once you creates all tablespaces same as like in source server then create user in new server.
Since the article provides a link to an Enterprise Edition and explains it's installation I believe it's critical to understand that this version is not free to use like for example Express Editions often are. After launching the Oracle Installer, the Configure Security Updates screen is your first stop. The Installation Option screen lets you chose whether you want to Create and configure a database (sample database), Intall database software only, or Upgrade an existing database.
The System Class screen lets you chose whether you want to install a Desktop class (ideal for develoers to play around in) or a Server class.
The Oracle Home User Selection screen lets you chose whether you want to Use Existing Windows User (that’s fine if you created one previously), Create New Windows User (what I’ll do next), or Use Windows Built-in Account. The Oracle Home User Selection screen lets you Create New Windows User, and that’s what I’ve done with the oracle user (it could be whatever you like). The Database Configuration Assistant screen tells you that you’ve been successful to this point. The second Database Configuration Assistant screen lets you configure passwords for the database accounts. The Install Product screen reappears while most of the database cloning operation has finished. This chapter describes tablespaces, the primary logical storage structures of any Oracle database, and the physical datafiles that correspond to each tablespace. If you are using Trusted Oracle, see the Trusted Oracle7 Server Administrator's Guide for more information about tablespaces and datafiles in that environment. Oracle stores data logically in tablespaces and physically in datafiles associated with the corresponding tablespace. A database administrator can create new tablespaces, add and remove datafiles from tablespaces, set and alter default segment storage settings for segments created in a tablespace, make a tablespace read-only or writeable, make a tablespace temporary or permanent, and drop tablespaces. Every Oracle database contains a tablespace named SYSTEM that Oracle creates automatically when the database is created.
A small database might need only the SYSTEM tablespace; however, it is recommended that you create at least one additional tablespace to store user data separate from data dictionary information.
Alternatively, a database administrator can create a new tablespace (defined by an additional datafile) to increase the size of a database.
The size of a tablespace is the size of the datafile(s) that constitute the tablespace, and the size of a database is the collective size of the tablespaces that constitute the database. The third option is to change a datafile's size or allow datafiles in existing tablespaces to grow dynamically as more space is needed. For more information about increasing the amount of space in your database, see the Oracle7 Server Administrator's Guide. A database administrator can bring any tablespace (except the SYSTEM tablespace) in an Oracle database online (accessible) or offline (not accessible) whenever the database is open. Note: The SYSTEM tablespace must always be online because the data dictionary must always be available to Oracle.
A tablespace is normally online so that the data contained within it is available to database users. When a tablespace goes offline, Oracle does not permit any subsequent SQL statements to reference objects contained in the tablespace. When a tablespace goes offline or comes back online, it is recorded in the data dictionary in the SYSTEM tablespace. You can bring a tablespace online only in the database in which it was created because the necessary data dictionary information is maintained in the SYSTEM tablespace of that database.
Oracle automatically changes a tablespace from online to offline when certain errors are encountered (for example, when the database writer process, DBWR, fails in several attempts to write to a datafile of the tablespace).
By using multiple tablespaces to separate different types of data, the database administrator can also take specific tablespaces offline for certain procedures, while other tablespaces remain online and the information in them is still available for use.
If the tablespace containing the indexes is offline, queries can still access table data because queries do not require an index to access the table data.


If the tablespace containing the tables is offline, the table data in the database is not accessible because the tables are required to access the data.
In summary, if Oracle determines that it has enough information in the online tablespaces to execute a statement, it will do so. The primary purpose of read-only tablespaces is to eliminate the need to perform backup and recovery of large, static portions of a database. Note: Because you can only bring a tablespace online in the database in which it was created, read-only tablespaces are not meant to satisfy archiving or data publishing requirements.
You can drop items, such as tables and indexes, from a read-only tablespace, just as you can drop items from an offline tablespace.
You cannot add datafiles to a tablespace that is read-only, even if you take the tablespace offline.
Space management for sort operations is performed more efficiently using temporary tablespaces designated exclusively for sorts. Temporary tablespaces provide performance improvements when you have multiple sorts that are too large to fit into memory.
For more information on the CREATE TABLESPACE and ALTER TABLESPACE Commands, see Chapter 4 of Oracle7 Server SQL Reference.
When a datafile is created for a tablespace, Oracle creates the file by allocating the specified amount of disk space plus the overhead required for the file header. Additional Information: For information on the amount of space required for the file header of datafiles on your operating system, see your Oracle operating system specific documentation. Since the first tablespace in any database is always the SYSTEM tablespace, Oracle automatically allocates the first datafiles of any database for the SYSTEM tablespace during database creation. After a datafile is initially created, the allocated disk space does not contain any data; however, Oracle reserves the space to hold only the data for future segments of the associated tablespace -- it cannot store any other program's data.
The data in the segments of objects (data segments, index segments, rollback segments, and so on) in a tablespace are physically stored in one or more of the datafiles that constitute the tablespace. You can alter the size of a datafile after its creation or you can specify that a datafile should dynamically grow as objects in the tablespace grow.
For more information about resizing datafiles, see the Oracle7 Server Administrator's Guide.
You can take tablespaces offline (make unavailable) or bring them online (make available) at any time.
In this situation graphic user tools always comes handy where they do all the dirty work and we do not have to remember anything. When you specify OFFLINE TEMPORARY, the database takes offline the datafiles that are not already offline, check pointing them as it does so. When you specify OFFLINE IMMEDIATE, then the media recovery for the tablespace is required before the tablespace can be brought online.
This ensures that in case of an incomplete recovery while resetting the redo log sequence using an ALTER DATABASE OPEN RESETLOGS statement, the tablespace does not require recovery to be online. Here you can see the CREATE TABLESPACE statement with all the settings done by you using SQL Developer gui. You may provide your email (attached to your Oracle Support Contract) and Oracle Support password, or uncheck the box and you can simply install a Desktop test environment. Check the appropriate radio button and then click the Next button to proceed with the install. Read it over, save a copy for later, and when everything is right then click the Next button to install.
Don’t walk away too quickly because you’re most likely going to have to allow access for the installation to complete successfully. Although, this is where several errors can occur when you failed to correctly configure Windows 7 before installation. For example, suppose you create a table in a specific tablespace using the CREATE TABLE command with the TABLESPACE option.
This allows you more flexibility in various database administration operations and can reduce contention among dictionary objects and schema objects for the same datafiles. You can add another datafile to one of its existing tablespaces, thereby increasing the amount of disk space allocated for the corresponding tablespace. You accomplish this by altering existing files or by adding files with dynamic extension properties. Active transactions with completed statements that refer to data in a tablespace that has been taken offline are not affected at the transaction level. If a tablespace was offline when you shut down a database, the tablespace remains offline when the database is subsequently mounted and reopened. Oracle never updates the files of a read-only tablespace, and therefore the files can reside on read-only media, such as CD ROMs or WORM drives. The READ ONLY option of the ALTER TABLESPACE command allows you to change the tablespace to read-only, making all of its associated datafiles read-only as well.
When you add a datafile, Oracle must update the file header, and this write operation is not allowed.


This scheme effectively eliminates serialization of space management operations involved in the allocation and deallocation of sort space.
The sort segment of a given temporary tablespace is created at the time of the first sort operation.
When a datafile is created, the operating system is responsible for clearing old information and authorizations from a file before allocating it to Oracle. As a segment (such as the data segment for a table) is created and grows in a tablespace, Oracle uses the free space in the associated datafiles to allocate extents for the segment. Note that a schema object does not correspond to a specific datafile; rather, a datafile is a repository for the data of any object within a specific tablespace. This functionality allows you to have fewer datafiles per tablespace and can simplify administration of datafiles.
Therefore, all datafiles making up a tablespace are taken offline or brought online as a unit when you take the tablespace offline or bring it online, respectively.
When you specify OFFLINE NORMAL, the database creates a checkpoint for all datafiles of the tablespace as it takes them offline. If no files are offline, but you use the temporary clause then media recovery is not required to bring the tablespace back online.
You cannot take a tablespace offline immediately if the database is running in NOARCHIVELOG mode.
TEMPORARY must be specified only if it is impossible to take the tablespace offline normally. A more complicated database might have three tablespaces, each comprised of two datafiles (for a total of six datafiles). Oracle allocates the space for this table's data segment in one or more of the datafiles that constitute the specified tablespace. For more information about these objects and the space that they require, see Chapter 14, "Procedures and Packages", and Chapter 15, "Database Triggers".
Oracle saves rollback data corresponding to statements that affect data in the offline tablespace in a deferred rollback segment (in the SYSTEM tablespace). Thus, tablespaces cannot be transferred from database to database (transfer of Oracle data can be achieved with tools described in Oracle7 Server Utilities). Also, should you need to recover your database, you do not need to recover any read-only tablespaces, because they could not have been modified.
The file cannot be written to unless its associated tablespace is returned to the read-write state.
All operations that use sorts, including joins, index builds, ordering (ORDER BY), the computation of aggregates (GROUP BY), and the ANALYZE command to collect optimizer statistics, benefit from temporary tablespaces. The sort segment grows by allocating extents until the segment size is equal to or greater than the total storage demands of all of the active sorts running on that instance. Oracle allocates the extents of a single segment in one or more datafiles of a tablespace; therefore, an object can "span" one or more datafiles. You can take individual datafiles offline; however, this is normally done only during certain database recovery procedures. Ita€™s recommended that connection which you are adding in DBA panel must be with privileged user such as sys. However, if one or more files of the tablespace are offline because of write errors, and you take it offline temporarily, then the tablespace requires recovery before you can bring it back online.
In this case, only those files that are taken offline due to errors are need to be recovered before the tablespace can be brought online. After making a choice about what you want to do with updates, click the Next button to proceed with the install. When the tablespace is brought back online, Oracle applies the rollback data to the tablespace, if needed. The files of a read-only tablespace can independently be taken online or offline using the DATAFILE option of the ALTER DATABASE command. One sort segment exists in every instance that performs a sort operation in a given tablespace.
Unless table "striping" is used, the database administrator and end-users cannot control which datafile stores an object. Also IMMEDIATE can only be specified after both the normal and the temporary settings have been tried. See Chapter 3, "Data Blocks, Extents, and Segments", for more information about extents and segments and how they relate to tablespaces.



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