If the tablespace being renamed is the SYSTEM tablespace or the SYSAUX tablespace, then it will not be renamed and an error is raised. If any datafile in the tablespace is offline, or if the tablespace is offline, then the tablespace is not renamed and an error is raised.

Which tablespace Cannot be taken offline?

You cannot take the following tablespaces offline: SYSTEM. The undo tablespace. Temporary tablespaces.

In which mode tablespace is taken offline?

NORMAL is the default. A tablespace can be taken offline temporarily, even if there are error conditions for one or more files of the tablespace. When you specify OFFLINE TEMPORARY , the database takes offline the datafiles that are not already offline, checkpointing them as it does so.

How do I know if tablespace is offline?

Check status of tablespace offline or online in Oracle

Check the tablespace status is offline or online. SELECT TABLESPACE_NAME,STATUS FROM DBA_TABLESPACES; Take the tablespace offline.

What is the Sysaux tablespace used for?

The SYSAUX tablespace provides storage of non-sys-related tables and indexes that traditionally were placed in the SYSTEM tablespace. For example, the tables and indexes that were previously owned by the system user can now be specified for a SYSAUX tablespace.

How do I know if datafile is offline?

Connect sys/password as sysdba in sqlplus and run the following query to find which datafiles are offline: Select file# from v$datafile where status = ‘OFFLINE’; Note all file# numbers that are returned. Then, while in sqlplus connected to the database as sys/password as sysdba.

How do I undo offline tablespace?

If there are Undo segments with status other than OFFLINE in the tablespace to be dropped, we need to wait till they become OFFLINE. sql> select status,segment_name from dba_rollback_segs where status not in (“OFFLINE’) and tablespace_name=[undo tablespace to be dropped];

What is the difference between system and Sysaux tablespace in Oracle?

This is an auxiliary tablespace to the SYSTEM tablespace. The SYSAUX tablespace contains data for some components and products, reducing the load on the SYSTEM tablespace. Every database using Oracle Database 10g release 1 (10.1) or later must have a SYSAUX tablespace.

How do I manage Sysaux tablespace?

Check the largest object in the SYSAUX tablespace

SQL> select OCCUPANT_NAME, SCHEMA_NAME, MOVE_PROCEDURE, SPACE_USAGE_KBYTES from v$sysaux_occupants; You use the move procedure command to move the occupant to another tablespace unless the move procedure is null.

How do I free up Sysaux tablespace?

SYSAUX Before Cleanup:

  1. Check whats occupying SYSAUX tablespace: Run below query to know what all occupants are there in sysaux occupying all the space. …
  2. Check AWR Retention Period: First is to check what is the AWR retention period in DB. …
  3. Cleanup old AWR reports to free up space:

How do I clean up tablespace?

First, specify the name of the tablespace that you want to drop after the DROP TABLESPACE keywords. Second, use the INCLUDE CONTENTS to delete all contents of the tablespace. If the tablespace has any objects, you must use this option to remove the tablespace.

What is undo tablespace in Oracle?

Oracle provides a fully automated mechanism, referred to as automatic undo management, for managing undo information and space. In this management mode, you create an undo tablespace, and the server automatically manages undo segments and space among the various active sessions.

What is system tablespace?

The system tablespace is the storage area for the InnoDB data dictionary, the doublewrite buffer, the change buffer, and undo logs. It may also contain table and index data if tables are created in the system tablespace rather than file-per-table tablespaces. The system tablespace can have one or more data files.

How many datafiles can a tablespace have?

1022 datafiles

A smallfile tablespace is a traditional Oracle tablespace, which can contain 1022 datafiles or tempfiles, each of which can contain up to approximately 4 million (222) blocks. Dependent on the operating system. An external table can be composed of multiple files.

What are the types of tablespaces in Oracle?

There are three types of tablespaces:

  • Permanent. You use permanent tablespaces to store your user and application data. …
  • Undo. A database running in automatic undo management mode transparently creates and manages undo data in the undo tablespace. …
  • Temporary.

Is tablespace physical or logical?

Logical structures include tablespaces, schema objects, data blocks, extents and segments. Database is logically divided into one or more tablespaces. Each tablespace creates one or more datafiles to physically store data. Schema objects are the structure that represents database’s data.

Where are tablespaces stored?

Each tablespace in an Oracle database is comprised of one or more operating system files called datafiles. A tablespace’s datafiles physically store the associated database data on disk. A database’s data is collectively stored in the datafiles that constitute each tablespace of the database.

What is the maximum size of tablespace in Oracle?

The maximum size of the single datafile or tempfile is 128 terabytes (TB) for a tablespace with 32 K blocks and 32 TB for a tablespace with 8 K blocks.

What is the difference between tablespace and schema?

A schema is a namespace – a logical thing. It is used to organize the names of database objects. It has nothing to do with the way the data is stored. A tablespace is a physical thing.

Is tablespace a database?

A database is divided into one or more logical storage units called tablespaces. Tablespaces are divided into logical units of storage called segments, which are further divided into extents.

Can there be more than one datafile per tablespace?

Yes, there can be more than one datafile per tablespace. When a schema object such as a table or index is created, its segment is created within a designated tablespace in the database. For example, suppose you create a table in a specific tablespace using the CREATE TABLE command with the TABLESPACE option.

How many maximum datafiles can there be in an Oracle database?

There is a UNIX kernel limit for the maximum number of open files. There is an absolute Oracle maximum of 65533 files in a database and usually 1022 files in a tablespace. However, certain hardware platforms have a limit lower than this absolute maximum.

What is the minimum size of an Oracle database in GB?

Hard Disk Space Requirements

Installation Type TEMP Space Oracle Home
Enterprise Edition 595 MB 6.00 GB
Standard Edition 2 595 MB 5.50 GB

How many datafiles can a database have?

This is the default type of tablespace in Oracle database. Small file tablespace can have multiple datafiles and each datafile can be as much as 222 data blocks in size. A small file tablespace can have maximum up to 1022 data files but this number depends on your Operating system also.