The temporary tablespace in Oracle is used to store data that is temporary and session specific (sort operations, hash joins, temporary tables data, etc.).
Users use the same temporary segments in the temporary tablespace to perform the sort operation, joins, etc. How can we tell which users use the temporary tablespace and how much space they use?
A physical standby database could always be opened in “read only” mode. The problem was that it didn’t apply any archived logs at that time. It could only apply logs when mounted.
Datafiles in Oracle can be resized to a smaller size only if there are no used blocks at the end of the file. If there is a used block at the end of the file we will not be able to reduce it size even if the rest of the file is empty
There are several specific operations that are considered as long operations.
When performing one of these operations, we can follow the progress of the operation
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