Purpose. Use the PURGE statement to remove a table or index from your recycle bin and release all of the space associated with the object, or to remove the entire recycle bin, or to remove part of all of a dropped tablespace from the recycle bin.
What is Purge command in Oracle?
When issuing a DROP TABLE statement in Oracle, you can specify the PURGE option. The PURGE option will purge the table and its dependent objects so that they do not appear in the recycle bin. The risk of specifying the PURGE option is that you will not be able to recover the table.
What are Bin$ tables in Oracle?
The recycle binis a new feature in Oracle 10g which keeps dropped objects. When you drop an object, no space is released and the object is moved to the logical container called the recycle bin. In case you want to get the table back, issue the flashback drop command as it was explained in the previous scenarios.
How do you purge a table in SQL?
TRUNCATE TABLE removes all rows from a table, but the table structure and its columns, constraints, indexes, and so on remain. To remove the table definition in addition to its data, use the DROP TABLE statement.
What is purge process?
1.1 Purge Process. Purging is the process of freeing up space in the database or of deleting obsolete data that is not required by the system. The purge process can be based on the age of the data or the type of data.
What is drop table if exists?
The DROP TABLE statement deletes the specified table, and any data associated with it, from the database. The IF EXISTS clause allows the statement to succeed even if the specified tables does not exist. Attempting to drop the table before dropping the procedure will result in an error.
How do I shrink a tablespace in Oracle?
If the datafile name must remain the same do the following:
- Create a new tablespace.
- Move the segments to the new tablespace.
- Resize the original datafile.
- Move the segments back to the original tablespace.
- Drop the new tablespace.
How to Purg objects from the Oracle Recycle Bin?
Purging Objects in the Oracle Recycle Bin If you decide that you are never going to restore an item from the recycle bin, you can use the PURGE statement to remove the items and their associated objects from the recycle bin and release their storage space. You need the same privileges as if you were dropping the item.
Is there a way to purge Recycle Bin in SQL?
You can purge recycle bin as follows. purge recyclebin will remove all objects from the user’s recycle bin and release all space associated with objects in the recycle bin SQL> purge recyclebin; Recyclebin purged.
How to purge Oracle recyclebin in SYSDBA?
The following hypothetical example purges the table hr.int_admin_emp, which was renamed to BIN$jsleilx392mk2=293$0 when it was placed in the recycle bin: If you have the SYSDBA privilege, then you can purge the entire recycle bin by specifying DBA_RECYCLEBIN, instead of RECYCLEBIN in the previous statement.
Is there a way to purge DBA recyclebin?
Purge dba_recyclebin needs sysdba privilige and it removes all objects from the system-wide recycle bin, and is equivalent to purging the recycle bin of every user SQL> purge dba_recyclebin; DBA Recyclebin purged. SQL>
