DB Administration Interview Questions
Questions Answers Views Company eMail

You create a private database link and upon connection, fails with: ORA-2085: connects to . What is the problem? How would you go about resolving this error?

1517

I have my backup RMAN script called "backup_rman.sh". I am on the target database. My catalog username/password is rman/rman. My catalog db is called rman. How would you run this shell script from the o/s such that it would run as a background process?

1 6536

Explain the concept of the DUAL table.

3 4802

What are the ways tablespaces can be managed and how do they differ?

IBM,

2 5599

From the database level, how can you tell under which time zone a database is operating?

1 3595

What's the benefit of "dbms_stats" over "analyze"?

1 4943

Typically, where is the conventional directory structure chosen for Oracle binaries to reside?

Patni,

1949

You have found corruption in a tablespace that contains static tables that are part of a database that is in NOARCHIVE log mode. How would you restore the tablespace without losing new data in the other tablespaces?

2360

How do you recover a datafile that has not been physically been backed up since its creation and has been deleted. Provide syntax example.

4 8237

Draft one mock email requesting your non-technical management grant you downtime to (provide justification where applicable) complete the following tasks: (1) Generate statistics on a large table; (2) Generate an RDA – if you don't know what an RDA is please say so. (3) Rename datafiles.

1663

hi, suppose i created one table after few days i did some insert,update how can i know when will i did ddl or dml operation is undergone on that table

IBM,

3 5492

Q. How to set ORACLE_HOME to my oracle software directory. Hi Friend I am installing oracle 10g Express Edition on Linux Fedora Core 6. Installation is success but when i run #sqlplus I getting command not found error. Then I have search sqlplus .i.e # find / -name sqlplus /usr/lib/oracle/xe/app/oracle/product/10.2.0/server/bin/sqlplus /usr/lib/oracle/xe/app/oracle/product/10.2.0/server/sqlplus These above output from find i have doubt which is correct path of sqlplus. So doubtfully i have set path 1st one.i.e # PATH=$PATH:/usr/lib/oracle/xe/app/oracle/product/10.2.0/server/bin Then I have run #sqlplus but still i have problem following Error 6 initializing SQL*Plus Message file sp1.msb not found SP2-0750: You may need to set ORACLE_HOME to your Oracle software directory How overcome this please answer m???

1 8952

mssqlserver 2005 Backup Advantages & Disadvantages? mssqlserver 2005 Restore Advantages & Disadvantages? mssqlserver 2005 Recovery mode Advantages & Disadvantages? mssqlserver 2005 Mirroring Advantages & Disadvantages? mssqlserver 2005 Replication Advantages & Disadvantages? mssqlserver 2005 Logshpping Advantages & Disadvantages? mssqlserver 2005 Job Advantages & Disadvantages?

TCS, Wipro,

1 3633

Hi This is request to DBA man Q. I have installed Oracle 10g Express edition in Linux fedora Core 6.When i have run the following script for ORACLE _HOME environment variable setting . script is ". /usr/lib/oracle/xe/app/oracle/product/10.2.0/server/bin/oracle_env.sh" variable is set but it is working only in current session. If i restart the system again i should run that script. So haw to set permanently ? even i have try with export command for that environment set it also does not work. Q. When i run sqlplus in shell prompt It is working but when i give user name and password the following error come out i.e # sqlplus SQL*Plus: Release 10.2.0.1.0 - Production on Fri Apr 2 19:45:40 2010 Copyright (c) 1982, 2005, Oracle. All rights reserved. Enter user-name: system Enter password: ERROR: ORA-01034: ORACLE not available ORA-27101: shared memory realm does not exist Linux Error: 2: No such file or directory I have also proper partition of disk means swap memory are available. # fdisk -l Disk /dev/sda: 40.0 GB, 40060403712 bytes 255 heads, 63 sectors/track, 4870 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Device Boot Start End Blocks Id System /dev/sda1 * 1 1275 10241406 7 HPFS/NTFS /dev/sda2 1276 4870 28876837+ f W95 Ext'd (LBA) /dev/sda5 1276 3187 15358108+ 7 HPFS/NTFS /dev/sda6 3188 4672 11928231 83 Linux /dev/sda7 4673 4863 1534176 82 Linux swap / Solaris

1 2805

i need a brief information about db2 dba course and realtime experts if any plz inform me nareshbhupathi93@gmail.com plzzz urgent

TCS,

1 3972


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Un-Answered Questions { DB Administration }

how can you schedule a job in database?

578


What are the commands you'd issue to show the explain plan for "select * from dual"?

1703


Due to some maintenance being done, the sql server on a failover cluster needs to be brought down. How do you bring the sql server down? : sql server DBA

563


i have 10gp file.now i need store in database..but database have only 7gb memory only..how do u store the file ?

1617


Typically, where is the conventional directory structure chosen for Oracle binaries to reside?

1949






What are the differences in clustering in sql server 2005 and 2008 or 2008 r2? : sql server DBA

523


what is logical system in sap basis

1103


What is the difference between the 2 operating modes of database mirroring? : sql server DBA

491


What are the new features in sql server 2005 when compared to sql server 2000? : sql server DBA

580


Assuming today is Monday, how would you use the DBMS_JOB package to schedule the execution of a given procedure owned by SCOTT to start Wednesday at 9AM and to run subsequently every other day at 2AM.

1679


What is a system database and what is a user database? : sql server DBA

582


what are the differences of where and if in SAS?

1643


what is asm?

582


What is transparent data encryption? : sql server DBA

540


Define the SGA and: How you would configure SGA for a mid-sized OLTP environment? What is involved in tuning the SGA?

3288