Difference between cold,warm and hot backup

Hello Pals,
Can you explain the types of backups and when we suppose to go
for which type?
TIA
Prakash

I just know basically two types of backups: consistent (cold)
and unconsistent (hot).
Closed DB backup (cold): The database must be closed using
shutdown normal, transactional or immediate. After this you copy
all datafiles, control files, redo logs, and if you want
(recomended) the parameter file and password file using an OS
command. This is also called a whole backup.
Opened DB backup (hot): This is for databases 24x7 or when you
need to backup the database without closing it. You can backup
the database while it is open but you need to have it in
archivelog mode. You need to read more details for this type of
backup in the product documentation.
Recovery Manager also presents another types of backups.

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Difference between DB Export and Offline Database Backup

Hi all,
This is a conceptual Question.
I want more information on what is the difference between DB Export and Database Backup? Also, it would be helpful if you can provide me with some links to them where I can increase my knowledge regarding DB Export, why it is done and tell me some scenarios.
Thanks.
Anil

Hi Anil,
I have no link for DB export for you, because you don't ask for a specific database. But if you like, you can read the export part of the System copy guide you can download from http://service.sap.com/instguides.
But may be a short description is enough:
DB Export:
A DB export exports only the structure and data from the database, but no index pages. Therefore you have to build the indexes during the import. This could be very CPU intensive if your tables are big.
DB Backup:
A backup is a copy of all used blocks/pages inside a database (in Oracle also unused blocks). This includes structures, data and indexes. When you restore it, only the blocks/pages were moved, no additional operations are necessary.
If you want to keep a small copy which is less release dependent than a backup, you should use a DB export (if you use R3load, you are also DB independent). If you want to have a copy of your database which could be restored quickly , you should use a DB backup.
Regards
Ralph Ganszky

Difference betwen RMAN,COLD and HOT backup

Hi Experts,
I have faces some interview question .
what is difference between COLD and HOT backup ?
what is difference between RMAN, COLD and HOT backup?

You mean the following,
Mark the beginning of the online tablespace backup.
SQL> ALTER TABLESPACE users BEGIN BACKUP;
Back up the online datafiles of the online tablespace with operating system commands. For UNIX:
% cp /oracle/oradata/trgt/users01.dbf /d2/users01_'date "+%m_%d_%y"'.dbf
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Please visit here for more details:
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Adith

Backup SQL Agent Jobs - whats the difference between "create to" and "drop to" using "script job as"?

Hi,
This should be straightforward, but being new to SQL Server 2008, can someone advise the difference between "create to" and "drop to" using "script job as"?
Thanks
IT Support/Everything

hello,
"CREATE TO" create a CREATE statement for the job, e.g. to execute this script on a other server to create the same job there.
"DROP TO" means you get a script to delete an existing job.
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What's the difference between BB10 London and Liverpool?

What is the difference between BlackBerry London and BlackBerry Liverpool? I'm having a hard time with this.
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Go to Solution.

The only difference is the radio bands within each...
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What's the difference between "controlfile autobackup" and "snapshot contro

Hi All,
What's the difference between "controlfile autobackup" and "snapshot controlfile" in RMAN configure ? Both are controlfile backups, what the difference between the controlfiles they backup ? Why there are two of these options ?
thanks

RMAN creates a control file snapshot to perform catalog resync operations. Control file autobackup will automatically create a backup of the control file whenever there are database structure changes.

What's the difference between "My Contacts" and "All Contacts"?

What's the difference between "My Contacts" and "All Contacts"?
I have no other account other then my iCloud account (from what I can tell), but "My Contacts" has a significantly smaller number of contacts then "All Contacts".
What's the difference?

Thanks for posting the screenshots, that's helpful. I didn't realize that you were looking at your groups.
"All Contacts" include (as the name implies) all of your contacts. Below that are any contact groups that you may have defined. These would normally be such things as "Work", "Personal", "Doctors", etc.; any groups that you find useful to define. These contain subsets of the "All Contacts" group.
At some point, perhaps inadvertently, you must have created a group called "My Contacts", or imported it to iCloud from your computer. At the time this may have contained all of your contacts and would have had the same number of contacts as the "All Contacts" group. Then over time you probably added 433 additional contacts that were never part of the original "My Contacts" group, resulting in an "All Contacts" group that contained 1465 contacts.
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What's the difference between deleted messages and trash?

what's the difference between deleted messages and trash?

A Time Capsule is hardware. It's basically an Apple AirPort Extreme wireless router with a built-in hard drive. For more info on this product:
http://www.apple.com/timecapsule/
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DIFFERENCE BETWEEN THE FULL AND BULK-LOGGED RECOVERY MODEL

DIFFERENCE BETWEEN THE FULL AND BULK-LOGGED RECOVERY MODEL

In bulk logged recovery mode certain bulk operations are minimally logged. In FULL recovery mode these are fully logged. These bulk operations are as mentioned below
1. SELECT INTO
2. BULK IMport operations including BULK INSERT and BCP
3. INSERT INTO SELECT command using the OPENROWSET(BULK) function
4. Partial updates to columns having large value data type
5. Using WRITE clause in UPDATE statements
6. Index operations e.g CREATE INDEX, ALTER INDEX REBUILD , DROP INDEX
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Changed Map)
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the extents that are marked by the Bulk Changed Map as changed.
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http://sqlsimplified.com/
Please click the Mark as Answer button if a post solves your problem!

What is the difference between interactive report and alv interactive repor

what is the difference between interactive report and alv interactive report
could u plz explain clearly.

Hi Rajesh,
interactive report or alv interactive report , both are same but except the viewer, Abap List Viewer (ALV).
Here in i am placing a sample simple ALV Interactive report.
Just double click on the customer number to go to the next screen.
*& Report ZKAL_ALV_INTERACTIVE_1                                      *
REPORT ZKAL_ALV_INTERACTIVE_1                  .
TYPE-POOLS: SLIS.
TYPES: BEGIN OF TY_KNA1,
          KUNNR TYPE KUNNR,
          NAME1 TYPE NAME1,
          ORT01 TYPE ORT01,
        END OF TY_KNA1.
TYPES: BEGIN OF TY_VBAK,
          VBELN TYPE VBELN,
          ERNAM TYPE ERNAM,
          ERDAT TYPE ERDAT,
          NETWR TYPE NETWR,
          WAERK TYPE WAERK,
         END OF TY_VBAK.
&--WORK AREA & TABLE DECLARATION--
DATA: W_KNA1 TYPE TY_KNA1.
DATA: T_KNA1 TYPE STANDARD TABLE OF TY_KNA1 INITIAL SIZE 1.
DATA: W_VBAK TYPE TY_VBAK.
DATA: T_VBAK TYPE STANDARD TABLE OF TY_VBAK INITIAL SIZE 1.
&--FIELDCAT TABLE & WORK AREA--
DATA: W_FCAT TYPE SLIS_FIELDCAT_ALV.
DATA: T_FCAT TYPE SLIS_T_FIELDCAT_ALV.
DATA: W_FCAT1 TYPE SLIS_FIELDCAT_ALV.
DATA: T_FCAT1 TYPE SLIS_T_FIELDCAT_ALV.
&--EVENT TABLE AND WORK AREA--
DATA: W_EVENTS TYPE SLIS_ALV_EVENT.
DATA: T_EVENTS TYPE SLIS_T_EVENT.
DATA: W_EVENTS1 TYPE SLIS_ALV_EVENT.
DATA: T_EVENTS1 TYPE SLIS_T_EVENT.
&--COMMENT TABLE & WORK AREA--
DATA: W_COMMENT TYPE SLIS_LISTHEADER.
DATA: T_COMMENT TYPE SLIS_T_LISTHEADER.
DATA: W_COMMENT1 TYPE SLIS_LISTHEADER.
DATA: T_COMMENT1 TYPE SLIS_T_LISTHEADER.
&----APPENDING FCAT -
W_FCAT-COL_POS = 1.
W_FCAT-FIELDNAME = 'KUNNR'.
W_FCAT-SELTEXT_M = 'CUST. NO'.
W_FCAT-HOTSPOT = 'X'.            "HOT SPOT HAND SYMBOL
W_FCAT-EMPHASIZE = 'C119'.       "FOR COLORING THE COLUMN 1
APPEND W_FCAT TO T_FCAT.
CLEAR W_FCAT.
W_FCAT-COL_POS = 2.
W_FCAT-FIELDNAME = 'NAME1'.
W_FCAT-SELTEXT_M = 'CUST. NAME'.
APPEND W_FCAT TO T_FCAT.
W_FCAT-COL_POS = 3.
W_FCAT-FIELDNAME = 'ORT01'.
W_FCAT-SELTEXT_M = 'CITY'.
APPEND W_FCAT TO T_FCAT.
W_FCAT1-COL_POS = 1.
W_FCAT1-FIELDNAME = 'VBELN'.
W_FCAT1-SELTEXT_M = 'ORDER NO'.
W_FCAT1-EMPHASIZE = 'C519'.
APPEND W_FCAT1 TO T_FCAT1.
CLEAR W_FCAT.
W_FCAT1-COL_POS = 2.
W_FCAT1-FIELDNAME = 'ERNAM'.
W_FCAT1-SELTEXT_M = 'NAME OF PARTY'.
APPEND W_FCAT1 TO T_FCAT1.
W_FCAT1-COL_POS = 3.
W_FCAT1-FIELDNAME = 'ERDAT'.
W_FCAT1-SELTEXT_M = 'DATE'.
APPEND W_FCAT1 TO T_FCAT1.
W_FCAT1-COL_POS = 4.
W_FCAT1-FIELDNAME = 'NETWR'.
W_FCAT1-SELTEXT_M = 'ORDER VALUE'.
APPEND W_FCAT1 TO T_FCAT1.
W_FCAT1-COL_POS = 5.
W_FCAT1-FIELDNAME = 'WAERK'.
W_FCAT1-SELTEXT_M = 'CURRENCY'.
APPEND W_FCAT1 TO T_FCAT1.
&--APPEND COMMENTRY--
W_COMMENT-TYP = 'H'.
W_COMMENT-INFO = 'CUSTOMER DETAILS'.
APPEND W_COMMENT TO T_COMMENT.
CLEAR W_COMMENT.
&--APPEND EVENTS TABLE--
W_EVENTS-NAME = 'TOP_OF_PAGE'.
W_EVENTS-FORM = 'TOPPAGE'.
APPEND W_EVENTS TO T_EVENTS.
W_EVENTS-NAME = 'USER_COMMAND'.
W_EVENTS-FORM = 'SUB2'.
APPEND W_EVENTS TO T_EVENTS.
W_EVENTS1-NAME = 'TOP_OF_PAGE'.
W_EVENTS1-FORM = 'TOPPAGE1'.
APPEND W_EVENTS1 TO T_EVENTS1.
CLEAR W_EVENTS1.
W_EVENTS1-NAME = 'USER_COMMAND'.
W_EVENTS1-FORM = 'SUB3'.
APPEND W_EVENTS1 TO T_EVENTS1.
SELECT-OPTIONS: CUSTNO FOR W_KNA1-KUNNR.
SELECT KUNNR
         NAME1
         ORT01 FROM KNA1 INTO TABLE T_KNA1
         WHERE KUNNR IN CUSTNO.
CALL FUNCTION 'REUSE_ALV_GRID_DISPLAY'
EXPORTING
   I_CALLBACK_PROGRAM                = 'ZKAL_ALV_INTERACTIVE_12'
   I_BACKGROUND_ID                   = 'BIKE'
   I_GRID_TITLE                      = 'CUSTOMER DETAILS'
   IT_FIELDCAT                       = T_FCAT
   IT_EVENTS                         = T_EVENTS
TABLES
    T_OUTTAB                          = T_KNA1 .
FORM TOPPAGE.
CALL FUNCTION 'REUSE_ALV_COMMENTARY_WRITE'
    EXPORTING
      IT_LIST_COMMENTARY       = T_COMMENT
     I_LOGO                   = 'LOGO_ALV'.
ENDFORM. "END OF TOPPAGE SUB.
FORM SUB2 USING UCOMM LIKE SY-UCOMM FIELDS1 TYPE SLIS_SELFIELD.
READ TABLE T_KNA1 INTO W_KNA1 INDEX FIELDS1-TABINDEX.
SELECT VBELN
         ERNAM
         ERDAT
         NETWR
         WAERK
               FROM VBAK
               INTO TABLE T_VBAK
               WHERE KUNNR = W_KNA1-KUNNR.
CALL FUNCTION 'REUSE_ALV_GRID_DISPLAY'
EXPORTING
   I_CALLBACK_PROGRAM                = 'ZKAL_ALV_INTERACTIVE_12'
   I_BACKGROUND_ID                   = 'KALEEM'
   I_GRID_TITLE                      = 'LIST OF ORDERS'
   IT_FIELDCAT                       = T_FCAT1
   IT_EVENTS                         = T_EVENTS1
TABLES
    T_OUTTAB                          = T_VBAK.
ENDFORM.    "END OF SUB2.
FORM TOPPAGE1.
&--APPEND COMMENTRYOF SECONDRY SCREEN--
W_COMMENT1-TYP = 'H'.
W_COMMENT1-INFO = 'LIST OF ORDERS'.
APPEND W_COMMENT1 TO T_COMMENT1.
W_COMMENT1-TYP = 'S'.
W_COMMENT1-KEY = 'CUSTOMER'.
W_COMMENT1-INFO = W_KNA1-KUNNR.
APPEND W_COMMENT1 TO T_COMMENT1.
CLEAR W_COMMENT.
W_COMMENT1-TYP = 'A'.
W_COMMENT1-INFO = W_KNA1-NAME1.
APPEND W_COMMENT1 TO T_COMMENT1.
CLEAR W_COMMENT1.
CALL FUNCTION 'REUSE_ALV_COMMENTARY_WRITE'
    EXPORTING
      IT_LIST_COMMENTARY       = T_COMMENT1
     I_LOGO                   = 'LOGO_ALV'
REFRESH T_COMMENT1.
ENDFORM.    "END OF TOPPAGE1
FORM SUB3 USING UCOMM LIKE SY-UCOMM FIELDS1 TYPE SLIS_SELFIELD.
    READ TABLE T_VBAK INTO W_VBAK INDEX FIELDS1-TABINDEX.
SET PARAMETER ID 'AUN' FIELD W_VBAK-VBELN.
CALL TRANSACTION 'VA02' AND SKIP FIRST SCREEN.
ENDFORM.
U can also find some of the useful codes on WIKI-SDN.
Reward helpful Answers.
Regds,
Kaleem.

DIFFERENCES between BASIC SCHEDULING and LEAD-TIME SCHEDULING.

Hello SAP Gurus,
Kindly let me know the differences between BASIC SCHEDULING and LEAD-TIME SCHEDULING.
Looking for your early feedback.
Warm regards,
Kaushik.

Hi,
Basic scheduling :
1.Basic dates are calculated.
2.Exact to day.
3.No cap reqmts are generated.
4.uses the inhouse production time from material master.
5.carried out automatically during planning run.
In basic date calculation ( order start date/ order finish date ) the system always
calculates backward scheduling.
1. From the reqmts date the system subtracts the GR processing time to
calculate the order fininsh date.
2. From the order finish date the system subtracts the inhouse production time to calculate the order start date.
3. From the order start date the system subtracts the opening period given in scheduling margin key to calculate the order opening date.
Lead time scheduling :
1.Exact to second
2.ie production start date /time and finish date and time are calculated.
3. cap reqmts are generated.
4. uses times from routing.
5. carried out only if the scheduling mode in MD02 screen is kept with indicator 2.
From the order finish date the system subtracts the float after production to calculate the production finish date.
From the production finish date the individual operations in the routing are scheduled backwards to calculate production start date.
From the production start date the system subtracts the float before production
to calculate order start date.
Regards,
nandha

Difference between Idoc Adapter and Proxies..

HI XI Guru's,
I am new to XI, I wanted to know what is the difference between Idoc adpater and proxies. When and what should be preffered ?
Warm Regards,
- Priya R

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proxies are available for communication between SAP systems with version WAS 6.20 and above. They support both synchronous as well as asynchronous modes of communication. Generally when you are looking at developing new application using WAS 6.20 and above then you can design the interfaces for this new applications in SAP XI and generate the required code for these interfaces automatically in SAP systems using transaction code - SPROXY in the case of ABAP Proxy and in the case of Java proxies the code is generated by SAP XI system itself. You only have to implement these interfaces in your new application. So, basically you have to only worry about building the application and the interface part is taken care by XI itself. you can also look at using proxies when data has to be inserted or fetched from custom/standard tables in R/3 using XI.
,idoc adapter can be used for commuincation between ABAP stacks only but Proxy can be used for both ABAP as well JAVA stack.

What's the Difference between Time Capsule and OS X Server?

The only thing i know is that both of them can share and backup files among different computers.
is that correct?
I'm still not quite understanding the exact functions of them
so your help and explanation will be highly appreciated.!!
Thanks!

Did i do something to cast your anger upon me o mighty Camelot, backed up bypterobyte?
Not at all, Mark - at least not in my case. I'm sorry if it came over that way. I was just saying that there's a slew of differences between Time Capsule and Mac OS X Server - it's almost unfair to put them in the same bucket.
Yes, Mac OS X Server can act as a backup destination for Time Machine clients, but it can also do a lot more than that. To be fair, it wasn't clear from the original post whether the focus was on backups alone (in which case the two are reasonably similar), but my point was that Mac OS X Server is a whole different animal. It's like comparing a Smart Car and an RV - both will get you from point A to point B, but the RV has bathroom, shower, beds, satellite TV, a kitchen, etc.

What is the difference between full checkpoint and incremental checkpoint?

What is the difference between full checkpoint and incremental checkpoint?
And what is checkpoint queue?
Can someone clarify these concepts?
Thanks!

Hi,
there are different types of checkpoints:
- Full checkpoint:
=> DBWR writes all dirty buffers from the Buffer cache to the datafiles and CKPT retrieves a new Checkpoint Change Number from a sys owned sequence and writes this number to all file headers and the controlfile.
-- can be triggered by different events, like a logswitch, a manual checkpoint (alter system ..), a shutdown and so on
This is the setup point for SMON for a crash recovery.
- Partial checkpoint:
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-- can e triggered by an ALTER TABLESPACE OFFLINE, ALTER TABLESPACE READ ONLY, ALTER TABLESPACE BEGIN BACKUP statement.
Incremental checkpoint:
number to all file headers and the controlfile.
-- can be triggered by different events, like a logswitch, a manual checkpoint (alter system ..), a shutdown and so on
- Partial checkpoint:
=> DBWR writes all dirty buffers of a single tablespace from the Buffer cache to the datafiles and CKPT retrieves a new Checkpoint Change Number from a sys owned sequence and writes this number to all file headers and the controlfile.
-- frequency is determined by FAST_START_MTTR_TARGET parameter (new feature to Oracle 9i), with wich you can specify a time in seconds which SMON is allowed to take maximal for a Crash Recovery until the database must be open again.
Dapending on the system you have SMON must calculate the maximum number of Redolog-blocks which it can manage to recover in the specified number of seconds. It will then create so called incremental checkpoints which will be tracked in the so called checkpoint queue in memory.
FAST_START_MTTR_TARGET is auto-tuned in Oracle 10g and Oracle tries to manage (incremental) checkpoint in a fashion that a minimum of I/Os are caused and a minimum time for crash recovery is needed.
If you set LOG_CHECKPOINTS_TO_ALERT to TRUE you will find checkpoint information in the alertSID.log file. You will see FULL and INCREMENTAL checkpoints then.
Hope this clarifies your question,
Lutz Hartmann

What is the difference between "to sbt" and "to sbt_tape"?

In channel allocating, what is the difference between "to sbt" and "to sbt_tape"?----No.184

Syntax looks wierd, but if you are looking for differences between sbt and sbt_tape, you can find it in the Backup and Recovery books.
http://www.oracle.com/pls/db102/portal.portal_db?selected=4

Difference between cold,warm and hot backup

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