This post will discuss How to check encrypted tablespace in the Database. This question will be useful when you are checking the security of the database.
What is a TDE wallet?
Transparent Data Encryption (TDE) is a feature available in Oracle Database for securing sensitive data at the storage level. The TDE Wallet is a critical component within this architecture, used to securely store the master encryption keys. The wallet facilitates the encryption and decryption processes, making it pivotal for database security.
How to check encrypted tablespace in the Database
Here is the query that can be used on How to check encrypted tablespace in the Database
select t.name,e.encryptionalg,e.encyptedts,e.status from v$encrypted_tablespaces e,v$tablespace t where t.ts#=e.ts#(+);
How to check individual datafile encryption within the tablespace
We can further check the datafile encryption status of the above tablespaces using the below query. These queries are Valid from 19c onwards only
select name, encrypted from v$datafile_header where tablespace_name like '&1';
We can find the count of the datafiles that are not encrypted in the particular tablespace using the below query. These queries are Valid from 19c onwards only
select count(*) from v$datafile_header where tablespace_name like '&1' and encrypted='NO';
We can find the count of the datafiles that are encrypted in the particular tablespace using the below query. These queries are Valid from 19c onwards only
select count(*) from v$datafile_header where tablespace_name like '&1' and encrypted='YES';
I hope you find these queries useful
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https://docs.oracle.com/en/database/oracle/oracle-database/18/asoag/managing-keystore-and-tde-master-encryption-key.html