yathirajulu

• Sep 30th, 2007

The difference is Application server?provides some features:Multi-threading, persistence, security & Transperant, which supports various protocols.Where as, Web-server doesn't supports that features....

sushilsb

 Profile Answers by sushilsb Questions by sushilsb

• Jun 2nd, 2006

Web servers serves the HTTP request and reutrns the HTTP response whereas application server exposes the business methods. These business methods are invoked thru different protocols e.g. Http, TCP/IP...

Answer Question  Select Best Answer

agarwalk_2000

 Profile Answers by agarwalk_2000 Questions by agarwalk_2000

• Jun 16th, 2007

By Dba_segments and DBA_extents and dba_free_space views.

Answer Question  Select Best Answer

schma16

 Profile Answers by schma16 Questions by schma16

• May 29th, 2007

Optimal Flexible Architecture is a set of configuration standard created to ensure reliable Ora installation that require little maintenance. It has a default file naming and Directory layout for nami...

Answer Question  Select Best Answer

 SET TRANSACTION USE ROLLBACK SEGMENT rbs_name.

Mohammed Abdul Afroze

• Mar 25th, 2007

Answer:  Shared Pool Comprises library cache and dictionary cache.Library Cache stores and shares sql statements,where as pl/sql procedure in memory.And the Default size is 8mb.

Ravi Prakash Pichika

• Jun 6th, 2005

The Shared Pool environment contains both fixed and variable structures. The Fixed structures remain relatively the same size, whereas the variable structures grow and shrink based on user and program...

Answer Question  Select Best Answer

 By querying DBA_SEGMENT table/view.

nitanjandial

• Jan 30th, 2007

+This is the view we should use to see the allocation space +Both the views return the same result.=============================================select name,sum(bytes)"allocated space in MB" from dba_data_files/v$datafile==============================================Thanks and RegardsNitan Jandial

Answer Question  Select Best Answer

 Shutdown the databaseCopy one of the existing control file to new locationEdit Config ora file by adding new control file. nameRestart the database.

nitanjandial

 Profile Answers by nitanjandial Questions by nitanjandial

• Jan 30th, 2007

+Before to insert new control files,we should verify the existing control files location+these are the ways to find it=======================================================1.show parameter control_fi...

Answer Question  Select Best Answer

bijan Mohapatra

• Nov 5th, 2006

Edit itit.ora file after shutdown the data base, set path for another control file in the parameter setting. then copy the control file to the desired location where the path is setting, then start the database.

Shrikant Pande

• Aug 25th, 2005

1. Edit init.ora file set control_files parameter with multiple location 2. shutdown immediate 3. copy control file to multiple locations & confirm from init.ora contol_files parameter ...

Answer Question  Select Best Answer

 They allow the database to maintain read consistency between multiple transactions.

Anu

• Oct 4th, 2006

1.Transaction Rollback-When a transaction is rolled back to restore the old image.2.Transaction recovery-To undo any uncommitted changes when DB is open after instance failure.3.Read consistency-While transaction is on progress other users in DB do not see any uncommitted changes.

Answer Question  Select Best Answer

 Each block contains entries as followsFixed block headerVariable block headerRow Header,row date (multiple rows may exists)PCTEREE (% of  free space for row updation in future)

Anu

• Oct 3rd, 2006

A block is divided into1. Header2.free space3.data spaceThe free space is in the middle shrinks as header and data space grow.Space usage in the data space :The data space is managed with 2 parameters...

Answer Question  Select Best Answer

 To manage the database level transactions such as modifications of the data dictionary table that record information about the free space usage.

Anu

• Oct 3rd, 2006

1.System tablespace is required in all databases.2.It is created with the database.3.Contains the data dictionary and stored program units.4.Contains SYSTEM undo segment.

Answer Question  Select Best Answer

anandhi80

 Profile Answers by anandhi80 Questions by anandhi80

• Jun 28th, 2006

when a user updated a particular table (for example 100 rows)...the old value will be retained in the roll back segments(Oracle 8) and now it is Undo segment (oracle 9i). If the user issue a rollback ...

Mahendra

• Sep 2nd, 2005

Used to store undo data. In a transaction when data is updated , other seesions should not view the uncommited data . Other Sessions will access the undo dara in the Roll Back segment

Answer Question  Select Best Answer

 Cold backup is taking backup of all physical files after normal shutdown of database.  We need to take.     - All Data files.     - All Control files.     - All on-line redo log files.     - The init.ora file (Optional)

Ravi Prakash Pichika

• Jun 20th, 2006

A backup of one or more database files taken while the database is closed. Typically, closed backups are also whole database backups. If you closed the database cleanly, then all the files in the backup are consistent. SQL>SHUTDOWN IMMEDIATE (or) NORMAL  

cmanne

 Profile Answers by cmanne Questions by cmanne

• Jan 4th, 2006

A cold backup is taken after shutting down the database Cold backup contains the following files--Data Files--Redolog Files--Control File(s)

Answer Question  Select Best Answer

Kishore Kumar Vuthpala

• Apr 11th, 2006

Hit Ratio is the ratio of shared SQL and PL/SQL items found in the Library Cache versus physical storage.It can also be defined in a mathematical expression as  1 - ((physical reads) / (db block gets + consistent reads))

Answer Question  Select Best Answer

 Taking backup of archive log files when database is open. For this the ARCHIVELOG mode should be enabled. The following files need to be backed up. All data files. All Archive log, redo log files. All control files.

cmanne

 Profile Answers by cmanne Questions by cmanne

• Jan 4th, 2006

The database should be in Archive log mode to take hot backups.Step1: Shutdown the database gracefullyStep2: Take full backup of the databaseStep3: Edit the following intialization parameters likelog_...

Answer Question  Select Best Answer

 Full back      - Complete databaseIncremental          - Only affected tables from last incremental date/full backup date.Cumulative backup - Only affected table from the last cumulative date/full backup date.

cmanne

 Profile Answers by cmanne Questions by cmanne

• Jan 4th, 2006

Different kinds of Exports are:1. Owner(Schema) level Backup2. Object(table) level backup3. Full Backup4. Tablespace Level Backup

Answer Question  Select Best Answer

      - Logical Backups     - Cold Backups     - Hot Backups (Archive log)

cmanne

 Profile Answers by cmanne Questions by cmanne

• Jan 4th, 2006

1. Physical Backup---Hot Backup---Cold Backup2. Logical Backup---Export---Import

Answer Question  Select Best Answer

 Create  a  database which implicitly creates a SYSTEM Rollback Segment in a SYSTEM tablespace. Create a Second Rollback Segment name R0  in the SYSTEM tablespace. Make  new  rollback segment available (After shutdown, modify init.ora file and Start database) Create other tablespaces (RBS)  for rollback segments. Deactivate  Rollback ...

samiksc

 Profile Answers by samiksc Questions by samiksc

• Dec 29th, 2005

Create rollback segment by using command likecreate rollback segment rbs01 tablespace tbs1 storage (initial 1M next 1M optimal 5M minextents 20 maxextents 100)Edit the database initialization file to ...

Answer Question  Select Best Answer

 Querying the DBA_ROLLBACK_SEGS viewIN USE         - Rollback Segment is on-line.AVAILABLE - Rollback Segment available but not on-line.OFF-LINE  - Rollback Segment off-lineINVALID        - Rollback Segment Dropped.NEEDS RECOVERY  - Contains data but need recovery or corupted.PARTLY  AVAILABLE  - Contains...

samiksc

 Profile Answers by samiksc Questions by samiksc

• Dec 29th, 2005

The following views help in monitoring rollback segment usage: DBA_SEGMENTSDBA_ROLLBACK_SEGSV$ROLLNAMEV$ROLLSTATV$TRANSACTION

Answer Question  Select Best Answer

 Rollback  segment  dynamically  extent  to handle larger transactions entry loads. A  single  transaction may wipeout all available free space in the Rollback Segment Tablespace. This prevents other user using Rollback segments.

Guest

• Dec 29th, 2005

A select query may fail with a 'snapshot too old' error in the following situation:A user issues a long running select query.Another user starts a transaction which updates the same table used in the ...

Answer Question  Select Best Answer