Interview Q & A Page - 2

BASIS / NETWEAVER INTERVIEW QUESTIONS AND ANSWERS

                                            

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11..What is landscape in basis?

Landscape is like a server system or like a layout of the servers or some may even call it the architecture of the servers 

12..Explain about your client?

In the SAP landscape, a client is an entity with independent information and data. The SAP client concept is based on the fact that an application service provider (ASP) must provide and administer all resources at a minimal cost, which is quite challenging in a multiple customer-client environment.

SAP provides the option of allocating each customer to a client, thereby removing the need to provide separate physical systems for each customer. This helps reduce physical hardware and sharing of hardware and related software, thereby reducing administration and support requirements and facilitating clients and a large number of customers.

13..What is an authorization?

Authorization objects are composed of a grouping of fields. The values in these fields will be used in authorization check. There can be a maximum of 10 fields defind on an authorization object.

 Basically we use this authorization objects to check whether the user is having an authorization to run particular transaction.  We assign authorization objects to a role with specific ACTVT type. For example a user is authorized only to view, other could be authorized to modify and so on.    IF your use rid not attached to specific role than contact your basis team to resolve the problem by sending SU53 screen shot. 

AUTHORITY-CHECK is the statement used in an ABAP Program to perform an authorization check against an authorization object.  This statement will return sy-subrc is 0 if user has required authorization otherwise will return code will be other than Zero.  Each return code will have different meaning.

14..What is the spool  overflow?

Spool request that got generated are stored in a temporary sequential file called Temse. Please note that these are stored in Temse because these are not stored permanently. The size of the Temse is limited by the parameter definition.

The default size of Temse is 32,000 and it can be increased till 2 billion. However, defining very high value can effect the database performance. Due to limited storage capacity of Temse, when this file got full, this throws an SAP spool overflow error.

If this happens, customers could not print from SAP. If you check in SM21 and ST22 transactions, you may encounter some error log or dumps like

ERROR IN SPOOL call : SPOOL OVERFLOW

SPOOL_INTERNAL_ERROR

System internal error in the spool system

15..Which files must be restored from tape to allow a full database restore and recovery ?

Tablespace data files, database control file, and all archived database transaction logs created. since the last full backup

                                                     

16..Do you have direct access with your client?

You can log on to the SAP systems using SAP GUI for Windows or SAP GUI for  Java. The relevant SAP GUI  must be installed on your PC.  

The SAP system is logged on to using SAP Logon. The required system connections in SAP Logon are usually set up by the system administration, and are available directly to users. For more information about creating and maintaining system connections, see SAP GUI help (see below).

Working in the SAP system

Adjusting the local layout to suit your personal requirements.

Note

SAP GUI for Windows and SAP GUI for Java have an integrated help function.

SAP GUI for Windows

:

Whenever the SAP Logon window is open and active, you can use the F1 key to open SAP GUI help. Depending on which window element the cursor is currently on, the information structure opens in the relevant place. From here you can navigate to any other place in the help structure. The help offers a full text search, as you know it from other applications. You start the full text search by pressing key combination CTRL+F.. SAP GUI help is delivered in English and German and is part of your local SAP GUI installation.

17..What happens if a table wants to allocate another extent but there is not enough contiguous free space in the tablespace?

                                    

The Oracle error message ORA-1653 is sent to the Syslog file and to the ABAP/4 short dump.

18..What is client copy?

A client copy does not "generate a new system". It is used to transfer information between clients within the same system or to another system at the same release and db level.

Procedure to create:
If it is a fresh installation, do this --

A. SCC4 --> Create client no. and fill other details.

B. Logon to the newly created client with SAP* and PASS as password.

C. SCCL --> choose any profile (preferably SAP_ALL),source client 000 and target client

D. Preferably do a test run initially to check if it can go well.

E. As a care check space in databases.

You can do Client copies remotely or do an export/import of data. Please study the dependencies of client dependant/independent data relents.
Export: If you need to do a full client copy and database is more than 50 or 60gb, the import may tae little long time. Export of the full data can be done with SAP_ALLprofile in Source system. SCC4 >> Export the data with required profiles. It will create data and cofiles under os level. (usr/sap/trans/data, cofiles).The export may take of 8 to 20 hrs depends on data.The import may take several days based on the size of the data. You need to set some parameters before you start the import. After the successful import you need to do post processing for client copy with request in scc8.

It depends upon what method you want to do client copy.
If you say remote client copy, i will suggest you against it because it takes hell lot of time to do client copy and any break for a moment in network connection will cause failure in client copy. If you are exporting the client then as such there is no problem, just remember the sequence in which you import the three (or two) transport requests. AND, keep enough free space in Tablespaces of Target server
Procedure :

A.Check Sufficient space at OS level to keep extracted data from source client

B.Export the client using following path or scc8Tools (r) Administration (r) Administration (r) Client Admin. (r) Client Transport (r) Client Export. Select the data to be copied using a profile. (if u want client specific and cross client data use profile sap_expc). before importing ensure that all table spaces have enough space for this check source system table spaces and allocate table space accordingly)

C.Now create new client in target system

D.now import those requests in target client using stms or scc6

E.Now perform post processing Tools (r) Administration (r) Administration (r) Client administration (r) Client transport(r) Import editing

19..An Instance error occurs when 1 or more Oracle background processes become corrupted. What actions should the database administrator take to correct the problem?

Shut down abort and start up open. The SMON process will use the current redo log files and checkpoint information from the control files to execute an automatic instance recovery upon database start up

20..The physical separation of database logs from their mirror copies means?

Using physically separate disks