What are the ways tablespaces can be managed and how do they
differ?
- 2 Answers
- 5649 Views
- IBM, I also Faced
- E-Mail Answers
Answer Posted / ram
tablespaces can be managed in 2 ways 1) Dictionary Managed
2) Locally managed
in DMT data dictionary tables stores the information of free and used extents, for used extents information in dmt tablespace uses sys.uet$ view and free extents information in DMT tablespace stored in sys.fet$
in LMT tablespace, tablespace datafiles maintains own bitmaps @ datafile headers these store the used extents and free extents information.
LMT is preferable, because it won't generate any rollbacks,
dictionary contention is reduced, space wastage removed & fragmentation removed
| Is This Answer Correct ? | 2 Yes | 0 No |
Post New Answer View All Answers
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.
What are the different ways you can create databases in sql server? : sql server DBA
How to start SQL Server in minimal configuration mode?
Where do you find the default index fill factor and how to change it? : sql server DBA
What is fill factor? : sql server DBA
Other than making use of the statspack utility, what would you check when you are monitoring or running a health check on an Oracle 8i or 9i database?
How would you go about verifying the network name that the local_listener is currently using?
what is a crs resource?
Oracle client is not able to connect to Oracle server although tnsnames.ora file has valid enteries. Oracle error message is “ cannot resolve net service name”. Mention any three reasons.
Does transparent data encryption provide encryption when transmitting data across network? : sql server DBA
what are the performance views in an oracle rac environment?
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
What are the different types of upgrades that can be performed in sql server? : sql server DBA
You have 4 instances running on the same UNIX box. How can you determine which shared memory and semaphores are associated with which instance?
How does propagation differ between Advanced Replication and Snapshot Replication (read-only)?
