Explain the concept of the DUAL table.

3 Answers  

---

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<lang>.msb not found SP2-0750: You may need to set ORACLE_HOME to your Oracle software directory How overcome this please answer m???

1 Answers  

---

What spfile/init.ora file parameter exists to force the CBO to make the execution path of a given statement use an index, even if the index scan may appear to be calculated as more costly?

0 Answers  

---

Why does Oracle not permit the use of PCTUSED with indexes?

0 Answers  

---

hi, how can i check all backups are exist to restore? I.e. i forget to take backup on one day. But now i want to check that all backups are there to restore now. I know the answer of through timestamps we know how to check. But i need any other way?

1 Answers  

---

what are the differences of where and if in SAS?

0 Answers  

---

Query processing is slow(eg select query)how will u solve that

3 Answers   TCS,

---

Claims and Drains are the locks used to control the concurrency between SQL processes and utilities. Referring to the above statement, what is the maximum number of concurrent Claimers for a Subsystem? Choice 1 32 Choice 2 64 Choice 3 128 Choice 4 256 Choice 5 No limit

0 Answers  

---

when does an alert gets signaled?

0 Answers   Oracle,

---

Give the stages of instance startup to a usable state where normal users may access it.

1 Answers  

---

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 Answers  

---

You have 4 instances running on the same UNIX box. How can you determine which shared memory and semaphores are associated with which instance?

0 Answers  

---