What does coalescing a tablespace do?

Coalesce simply takes contigous free extents and makes them into a single bigger free extent. It is a command to take any free extents that are right next to some other free extent and make one bigger free extent out of them. It is useful after a drop command when you want to create another object right away.

Can we resize temp tablespace?

If the temporary tablespace you want to shrink is your default temporary tablespace, you will have to first create a new temporary tablespace, set it as the default temporary tablespace then drop your old default temporary tablespace and recreate it.

How do I change Max Tempfile size?

pls use this steps to solve the problem.

shutdown apps tier.
in database tier, login as sysdba. alter database tempfile ‘/path/temp01.dbf’ drop including datafiles.
alter tablespace temp add temfile ‘/path/temp01.dbf’ size 500 m.
start apps tier.

How do I resize a Tempfile in standby?

The solution is to put the physical standby in READ ONLY mode to add the tempfile. SQL> alter database recover managed standby database cancel; Database altered. SQL> alter database open read only; Database altered. SQL> alter tablespace temp add tempfile 2 ‘/u01/app/oracle/oradata/ncpp/temp/temp01.

How do I find the default temp tablespace in Oracle 11g?

You can run the following query to see that the default temporary tablespace has, in fact, been changed: SELECT PROPERTY_VALUE FROM DATABASE_PROPERTIES WHERE PROPERTY_NAME = ‘DEFAULT_TEMP_TABLESPACE’; This will query the Oracle system tables and return the value of the default temporary tablespace.

Is there a coalesce tablespace command?

So, coalesce tablespace is similar to defregmentation, it doesn’t drop the high water mark and release free space, is that right? Does the above command do both coalesce and move downward HWM? Thanks! there is no coalesce of a tablespace in that sense.

What is the difference between coalesce and deallocate unused space?

Answer: Both the coalesce and “deallocate unused space” commands serve to free-up space, but they do it in different ways: Oracle notes that the “deallocate unused space” clause is used to to explicitly deallocate unused space at “the end” of a segment and makes that space available for other segments within the tablespace.

What is coalesce?

This question is What is the reason? and Tom said… Coalesce simply takes contigous free extents and makes them into a single bigger free extent. It is not a reorganization tool. It is a command to take any free extents that are right next to some other free extent and make one bigger free extent out of them.