Topic: Oracle Certified Professional Exams (OCP & OCA) >> Urgent answers for these questions?
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| Title: Urgent answers for these questions? |
| sabbu |
Posted: Nov 18, 2006 01:14:33 PM |
Total Post: 11
Joined: Oct, 2006
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Can any one tell me
How to measure tablespace fragmentation?
What you issue the SQL statement at SQL prompt & what happens internally?
What is the difference between lack and latches?
How do you estimate extent size in tablespace?
When user complaining the application is responding is slow where can we look for error?
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 Prakash |
| Posted: Dec 04, 2006 01:22:57 AM |  |
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Total Post: 112
Joined: Aug, 2006
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The folloing statement can used for checking tablespace fragmentation.
select a.tablespace_name, a.bytes sbytes,
sum(b.bytes) fbytes, count(*) kount
from dba_data_files a, dba_free_space b
where a.file_id = b.file_id
A large no. of free chunks indicate that the tablespace needs to be defragmented.
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