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Question and Answer

Connor McDonald

Thanks for the question, Adrian.

Asked: February 10, 2020 - 3:01 pm UTC

Answered by: Connor McDonald - Last updated: February 11, 2020 - 10:32 am UTC

Category: Database Administration - Version: Cloud ADW

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You Asked

While I was examining the space used on my free ADW i found lots of tables with a prefix of BIN$ in my DATA tablespace. I found these being referenced in the user_segments

The recyclebin is empty, and I cant find the tables using a select on the user_tables, but i can query the tables and get back results which show they are copies of existing tables.

Do you know what these are, and how I get rid of them to free up the space they report as using.



and we said...

They are tables in your recycle bin, eg

SQL> show recyclebin
SQL> drop table t;

Table dropped.

SQL> show recyclebin
---------------- ------------------------------ ------------ -------------------
T                BIN$rw0R7fRFSMCDE5JjRDHT/w==$0 TABLE        2020-02-11:12:00:40

So simple execute

SQL> purge recyclebin

and you'll be good to go

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Recycle is User specific!

February 11, 2020 - 7:43 am UTC

Reviewer: Adrian Ward from London

I now know why I thought the recycle bin was empty - I ran the scripts from the admin account, including the purge script, but that did not delete the other users recyclebin entries.
The admin account has elevated rights, including the inky one that can read dba segments.

Is there a DBA like purge command that will empty all bins for the cloud Admin account? Or do we have to log in as every user?

Chris Saxon


February 11, 2020 - 10:32 am UTC

You can empty the dba recyclebin when connected to the admin account:

purge dba_recyclebin;

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