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

Answer Posted / mohapatra.gouranga@gmail.com

1) Find the cost.
2) Check what tables are going full table scan.
3) Create Indexes if is possible.
4) Re-write the query to optimize the cost with modifying
filter condition.

Is This Answer Correct ?    0 Yes 0 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

Does any body has ORACLE Certification Dumps or Materials on 9i DBA, 10G DBA, Internet Application Developer, OCP 8i to 10g DBA Upgrade, Oracle 11i if any body have it, please kindly drop an email to: taruni_2k8@yahoo.com

1724


What are the different sql server versions you have worked on? : sql server DBA

543


which background process invoke at the time of upgradation tell me???

2223


How would you best determine why your MVIEW couldn't FAST REFRESH?

1826


What is the cache hit ratio, what impact does it have on performance of an Oracle database and what is involved in tuning it?

1971






how can you schedule a job in database?

597


What are statistics, under what circumstances they go out of date, how do you update them?

1806


What are the different types of indexes available in sql server? : sql server DBA

573


Provide an example of a shell script which logs into SQLPLUS as SYS, determines the current date, changes the date format to include minutes & seconds, issues a drop table command, displays the date again, and finally exits.

1502


Can you tell me about your experience with the administration of COTS system..? Also, how do you set up seed data..?

1743


How can you control the amount of free space in your index pages? : sql server DBA

729


What are the different ways you can create databases in sql server? : sql server DBA

599


How many files can a database contain in sql server?how many types of data files exists in sql server? How many of those files can exist for a single database? : sql server DBA

656


What is a correlated sub-query? : sql server DBA

580


How do you open a cluster administrator? : sql server DBA

581