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?

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?

Explain the concept of the DUAL table.

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

IBM,

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

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

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

Patni,

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?

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

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.

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,

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???

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TCS, Wipro,

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

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TCS,