What is a Tablespace?

What is a Tablespace?
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1 Answer

Answer :

A database is divided into Logical Storage Unit called tablespaces. A
tablespace is used to grouped related logical structures together
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Related questions

Can one rename a tablespace? (for DBA)

Description : Can one rename a tablespace? (for DBA)

Last Answer : No, this is listed as Enhancement Request 148742. Workaround: Export all of the objects from the tablespace Drop the tablespace including contents Recreate the tablespace Import the objects

What view would you use to determine free space in a tablespace?

Description : What view would you use to determine free space in a tablespae?

Last Answer : DBA_FREE_SPACE

How do you add a data file to a tablespace

Description : How do you add a data file to a tablespace

Last Answer : ALTER TABLESPACE ADD DATAFILE SIZE

Name a tablespace automatically created when you create a database.

Description : Name a tablespace automatically created when you create a database.

Last Answer : The SYSTEM tablespace.

What is the difference between a TEMPORARY tablespace and a PERMANENT tablespace?

Description : What is the difference between a TEMPORARY tablespace and a PERMANENT tablespace?

Last Answer : A temporary tablespace is used for temporary objects such as sort structures while permanent tablespaces are used to store those objects meant to be used as the true objects of the database.

What does coalescing a tablespace do?

Description : What does coalescing a tablespace do?

Last Answer : Coalescing is only valid for dictionary-managed tablespaces and de- fragments space by combining neighboring free extents into large single extents.

Which parameter specified in the DEFAULT STORAGE clause of CREATE TABLESPACE cannot be altered after creating the tablespace?

Description : Which parameter specified in the DEFAULT STORAGE clause of CREATE TABLESPACE cannot be altered after creating the tablespace?

Last Answer : All the default storage parameters defined for the tablespace can be changed using the ALTER TABLESPACE command. When objects are created their INITIAL and MINEXTENS values cannot be changed.

How do I find used/free space in a TEMPORARY tablespace? (for DBA

Description : How do I find used/free space in a TEMPORARY tablespace? (for DBA

Last Answer : Unlike normal tablespaces, true temporary tablespace information is not listed in DBA_FREE_SPACE. Instead use the V$TEMP_SPACE_HEADER view: SELECT tablespace_name, SUM (bytes used), SUM (bytes free) FROM V$temp_space_header GROUP BY tablespace_name;

What is Tablespace Quota ?

Description : What is Tablespace Quota ?

Last Answer : The collective amount of disk space available to the objects in a schema on a particular tablespace.

What is default tablespace ?

Description : What is default tablespace ?

Last Answer : The Tablespace to contain schema objects created without specifying a tablespace name.

How does one prevent tablespace fragmentation? (for DBA)

Description : How does one prevent tablespace fragmentation? (for DBA)

Last Answer : Always set PCTINCREASE to 0 or 100. Bizarre values for PCTINCREASE will contribute to fragmentation. For example if you set PCTINCREASE to 1 you will see that your extents are going to have weird and ... /O may be required to fetch the additional blocks where extent maps of the segment are stored.

Explain the relationship among Database, Tablespace and Data file.?

Description : Explain the relationship among Database, Tablespace and Data file.?

Last Answer : Each databases logically divided into one or more tablespaces one or more data files are explicitly created for each tablespace

Can a Tablespace hold objects from different Schemes ?

Description : Can a Tablespace hold objects from different Schemes ?

Last Answer : Yes.

Can a tablespace hold objects from different schemes?

Description : Can a tablespace hold objects from different schemes?

Last Answer : Yes.

Explain the relationship among database, tablespace and data file.

Description : Explain the relationship among database, tablespace and data file.

Last Answer : Each databases logically divided into one or more tablespaces one or more data files are explicitly created for each tablespace.

What is SYSTEM tablespace and when is it created?

Description : What is SYSTEM tablespace and when is it created?

Last Answer : Every Oracle database contains a tablespace named SYSTEM, which is automatically created when the database is created. The SYSTEM tablespace always contains the data dictionary tables for the entire database.

What is a tablespace?

Description : What is a tablespace?

Last Answer : A database is divided into Logical Storage Unit called tablespaces. A tablespace is used to grouped related logical structures together.

How do you move tables from one tablespace to another tablespace?

Description : How do you move tables from one tablespace to another tablespace?

Last Answer : There are several methods to do this; 1) export the table, drop the table, create the table definition in the new tablespace, and then import the data (imp ignore=y). 2) Create ... table and rename the temporary table as the original: DROP TABLE real_table; RENAME temp_name TO real_table;

What is a Locally Managed Tablespace?

Description : What is a Locally Managed Tablespace?

Last Answer : Locally Managed Tablespace is a tablespace that record extent allocation in the tablespace header. Each tablespace manages its own free and used space within a bitmap structure stored in one of the ... tracks adjacent free space) ▪ Changes to the extent bitmaps do not generate rollback information

What is a Tablespace?

Description : What is a Tablespace?

Last Answer : A tablespace is a logical storage unit within an Oracle database. Tablespace is not visible in the file system of the machine on which the database resides. A tablespace, in turn, ... three types of tablespaces in Oracle: ▪ Permanent tablespaces ▪ Undo tablespaces ▪ Temporary tablespaces

In SQL, the CREATE TABLESPACE isused A. to createa place in the databasefor storageof scheme objects, rollback segments, andnaming the data files to comprise the tablespace B. to createa database trigger C. to add/rename data files, to change storage D. All of theabove E. None of the above

Description : In SQL, the CREATE TABLESPACE isused A. to createa place in the databasefor storageof scheme objects, rollback segments, andnaming the data files to comprise the tablespace B. to createa database trigger C. to add/rename data files, to change storage D. All of theabove E. None of the above

Last Answer : to createa place in the databasefor storageof scheme objects, rollback segments, andnaming the data files to comprise the tablespace

Can you increase the size of a tablespace ? How ?

Description : Can you increase the size of a tablespace ? How ?

Last Answer : Yes, by adding datafiles to it.

What is a Tablespace?

Description : What is a Tablespace?

Last Answer : A database is divided into Logical Storage Unit called tablespaces. A tabl

Explain the relationship among Database, Tablespace and Data file.?

Description : Explain the relationship among Database, Tablespace and Data file.?

Last Answer : Each databases logically divided into one or more tablespaces one or more data files are explicitly created for each tablespace

Can a Tablespace hold objects from different Schemes?

Description : Can a Tablespace hold objects from different Schemes?

Last Answer : Yes.

Which parameter specified in the DEFAULT STORAGE clause of CREATE TABLESPACE cannot be altered after creating the tablespace?

Description : Which parameter specified in the DEFAULT STORAGE clause of CREATE TABLESPACE cannot be altered after creating the tablespace?

Last Answer : All the default storage parameters defined for the tablespace can be changed using the ALTER TABLESPACE command. When objects are created their INITIAL and MINEXTENS values cannot be changed.

How can you increase the capacity of an Oracle tablespace? Note: there are 2 correct answers in this question A. Resize the existing data file B. Add a new data file to the existing tablespace C. Enable compression of backup data using Oracle advanced compression D. Increase the value of the database parameter DB_BLOCK_SIZE

Description : How can you increase the capacity of an Oracle tablespace? Note: there are 2 correct answers in this question A. Resize the existing data file B. Add a new data file to ... compression of backup data using Oracle advanced compression D. Increase the value of the database parameter DB_BLOCK_SIZE

Last Answer : B. Add a new data file to the existing tablespace

What does "jumps off the screen" mean?

Description : What does "jumps off the screen" mean?

Last Answer : answer:AMD is a relatively small manufacturer but well established in the industry. In this context, AMD jumps off the screen at the guy doing the research into acquiring companies for ... chip manufacturing division, but AMD is the one that really stands out from an acquisition perspective.

How to add conditions in select statement in oracle?

Description : How to add conditions in select statement in oracle?

Last Answer : Just add the decode

How can I dump an oracle schema to a LOCAL file over a network connection from sqlplus?

Description : How can I dump an oracle schema to a LOCAL file over a network connection from sqlplus?

Last Answer : By connecting and spooling are you excluding the exp/imp commands (or expdb/impdb in 10g)?

What are the two ways to incorporate images into a oracle forms application?

Description : What are the two ways to incorporate images into a oracle forms application?

Last Answer : Boilerplate Images Image_items

Can one export a subset of a table? (for DBA

Description : Can one export a subset of a table? (for DBA

Last Answer : From Oracle8i one can use the QUERY= export parameter to selectively unload a subset of the data from a table. Look at this example: exp scott/tiger tables=emp query=\"where deptno=10\"

What are the types of visual attribute settings?

Description : What are the types of visual attribute settings?

Last Answer : Custom Visual attributes Default visual attributes Named Visual attributes. Window

How does one use the import/export utilities? (for DBA

Description : How does one use the import/export utilities? (for DBA

Last Answer : Look for the "imp" and "exp" executables in your $ORACLE_HOME/bin directory. One can run them interactively, using command line parameters, or using parameter files. Look at the imp/exp parameters ... and export data with the "Schema Manager" GUI that ships with Oracle Enterprise Manager (OEM).

what is a display item?

Description : what is a display item?

Last Answer : Display items are similar to text items but store only fetched or assigned values. Operators cannot navigate to a display item or edit the value it contains.

What is import/export and why does one need it? (for DBA

Description : What is import/export and why does one need it? (for DBA

Last Answer : The Oracle export (EXP) and import (IMP) utilities are used to perform logical database backup and recovery. They are also used to move Oracle data from one machine, database or schema to ... corruption. Ensure that all the data can be read. . Transporting tablespaces between databases . Etc.

Are there any troubleshooting tips for OEM? (for DBA

Description : Are there any troubleshooting tips for OEM? (for DBA

Last Answer : . Create the OEM repository with a user (which will manage the OEM) and store it in a tablespace that does not share any data with other database users. It is a bad practice to create ... successfully. Check the log to see the results of the execution rather than relying on this status.

Where can one get more information about TCL? (for DBA

Description : Where can one get more information about TCL? (for DBA

Last Answer : One can write custom event checking routines for OEM using the TCL (Tool Command Language) language. Check the following sites for more information about TCL: . The Tcl Developer Xchange - ... the OraTCL package . Tom Poindexter's Tcl Page - Oratcl was originally written by Tom Poindexter

How does one start the Oracle Intelligent Agent? (for DBA

Description : How does one start the Oracle Intelligent Agent? (for DBA

Last Answer : One needs to start an OIA (Oracle Intelligent Agent) process on all machines that will to be managed via OEM. For OEM 9i and above:

What is the Oracle Intelligent Agent? (for DBA

Description : What is the Oracle Intelligent Agent? (for DBA

Last Answer : The Oracle Intelligent Agent (OIA) is an autonomous process that needs to run on a remote node in the network to make the node OEM manageable. The Oracle Intelligent Agent is ... events registered in Enterprise Manager; and . Executing tasks associated with jobs submitted to Enterprise Manager.

What are the types of SQL Statement ?

Description : What are the types of SQL Statement ?

Last Answer : Data Definition Language : CREATE,ALTER,DROP,TRUNCATE,REVOKE,NO AUDIT & COMMIT.

How does one backout events and jobs during maintenance slots? (for DBA

Description : How does one backout events and jobs during maintenance slots? (for DBA

Last Answer : Managemnet and data collection activity can be suspended by imposing a blackout. Look at these examples: agentctl start blackout # Blackout the entrire agent agentctl stop blackout # Resume normal monitoring ... management agentctl start blackout -s jobs -d 00:20 # Blackout jobs for 20 minutes

What are the pre requisites ?

Description : What are the pre requisites ?

Last Answer : I. to modify data type of a column ? ii. to add a column with NOT NULL constraint ? To Modify the datatype of a column the column must be empty. to add a column with NOT NULL constrain, the table must be empty.

What kind of jobs can one schedule with OEM? (for DBA

Description : What kind of jobs can one schedule with OEM? (for DBA

Last Answer : OEM comes with pre-defined jobs like Export, Import, run OS commands, run sql scripts, SQL*Plus commands etc. It also gives you the flexibility of scheduling custom jobs written with the TCL language.

Difference between SUBSTR and INSTR ?

Description : Difference between SUBSTR and INSTR ?

Last Answer : INSTR (String1,String2(n,(m)),INSTR returns the position of the mth occurrence of the string 2 instring1. The search begins from nth position of string1.SUBSTR (String1 n,m)SUBSTR returns a character string of size m in string1, starting from nth position of string1.

Should the OEM Console be displayed at all times (when there are scheduled jobs)? (for DBA

Description : Should the OEM Console be displayed at all times (when there are scheduled jobs)? (for DBA

Last Answer : When a job is submitted the agent will confirm the status of the job. When the status shows up as scheduled, you can close down the OEM console. The processing of the job is managed by the OIA ... that OEM will not be able to send e-mail and paging notifications when the Console is not started.

Explain UNION,MINUS,UNION ALL, INTERSECT ?

Description : Explain UNION,MINUS,UNION ALL, INTERSECT ?

Last Answer : INTERSECT returns all distinct rows selected by both queries.MINUS - returns all distinct rows selected by the first query but not by the second.UNION - returns all distinct rows selected by either queryUNION ALL - returns all rows selected by either query, including all duplicates.

WHY USE RMAN ? (for DBA

Description : WHY USE RMAN ? (for DBA

Last Answer : No extra costs Its available free ?RMAN introduced in Oracle 8 it has become simpler with newer versions and easier than user managed backups ?Proper security ?You are 100% sure your ... what need to backed up Knows what is required for recovery Knows what backups are redundant

WHAT IS RMAN ? (for DBA

Description : WHAT IS RMAN ? (for DBA

Last Answer : Recovery Manager is a tool that: manages the process of creating backups and also manages the process of restoring and recovering from them.

What is the basic structure of PL/SQL ?

Description : What is the basic structure of PL/SQL ?

Last Answer : PL/SQL uses block structure as its basic structure. Anonymous blocks or nested blocks can be used in PL/SQL.