tde encryption oracle 19c step by step

. Oracle E-Business Suite Technology Stack - Version 12.2 and later: 19c DBUA TDE-Encrypted Database Upgrade Fails During Timezone Step with ORA-600 [kcbtse_encdec_tb 19c DBUA TDE-Encrypted Database Upgrade Fails During Timezone Step with ORA-600 [kcbtse_encdec_tbsblk_11] in alert.log In OCI DBCS it is included by default. In the previous version, we need to define ENCRYPTION_WALLET_LOCATION inside sqlnet.ora but the sqlnet parameter are deprecated in 18c. All the encryption is done at the files level, transparent for the application. Amazon RDS supports Oracle Transparent Data Encryption (TDE), a feature of the Oracle Advanced Security option available in Oracle Enterprise Edition. There are two ways to do it, (a) Generate the Master key using Single command. So next, let's set a TDE master key in the keystore. As the name suggests, TDE(Transparent Data Encryption) transparently encrypts data at rest in Oracle Databases. The purpose of this article is to list and document day-to-day tasks related to Oracle Transparent Data Encryption. If necessary, create a wallet directory. TDE_CONFIGURATION can be set dynamically. Now we have a wallet, but its status is closed. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); This site uses Akismet to reduce spam. This is a fully online operation. Oracle provides solutions to encrypt sensitive data in the application tier although this has implications for databases that you must consider in advance (see details here). If you plan to migrate to encrypted tablespaces offline during a scheduled maintenance period, then you can use Data Pump to migrate in bulk. [oracle@Prod22 ORADBWR]$ ls -lrt Tablespace keys are managed automatically over secure protocols while the master encryption key is stored in a centralized key management solution such as: Oracle Transparent Data Encryption (TDE) enables the organizations to encrypt sensitive application data on storage media completely transparent to the application. That means that the encryption command moving forward in 19c is as follows: alter tablespace tablespace_name encryption online using 'encryption_algorithm' encrypt; Your email address will not be published. Check the key column status in the wallet. All rights reserved. Were sorry. This will encrypt all data traveling to and from an Oracle Database over SQL*Net. My requirement is column level encryption and followed all the steps as you have shown in Oracle 19C. The cryptographic library that TDE uses in Oracle Database 19c is validated for U.S. FIPS 140-2. You dont need OMF anymore if you use tablespace online encryption. Keystore operations (such as opening or closing the keystore, or rekeying the TDE master encryption key) can be issued on any one Oracle RAC instance. -rw-r. [oracle@Prod22 dbs]$ cd /u02/app/oracle/admin/oradbwr/pfile/ Set TDE Master Key. Take file backup of wallet files ewallet.p12 and cwallet.sso in standby DB. TDE wallet should also be backed up once weekly along with Full File system backup. SQL> ADMINISTER KEY MANAGEMENT SET KEY 2 IDENTIFIED BY oracle19 3 WITH BACKUP USING 'cdb1_key_backup'; keystore altered. Under Security, click Transparent Data Encryption. The OCI Vault keys used for protecting databases are stored in a highly available, durable, and managed service. administer key management set keystore open identified by oracledbwr; SQL> administer key management set key using tag oracledbwr_Tablespace_TDE force keystore identified by oracledbwr with backup using TDE_backup; An Oracle Advanced Security license is required to encrypt RMAN backups to disk, regardless if the TDE master encryption key or a passphrase is used to encrypt the file. We should exclude any external factors before comparing both data files by stopping the database. AES is the abbreviation for Advanced Encryption Standard. -rw-r. Redo Buffers 7872512 bytes FB Group:https://www.facebook.com/groups/894402327369506/ (METHOD=FILE) Fill in your details below or click an icon to log in: You are commenting using your WordPress.com account. TDE is part of the Oracle Advanced Security, which also includes Data Redaction. I did all the following operations on node 2 purposely to verify the wallet copying is working. SQL> alter system set one_step_plugin_for_pdb_with_tde=TRUE scope=both sid='*'; System altered. To import, simply import the dumpfile. STEP 7: Set the Keystore TDE Encryption Master Key. if we have a standby it should have the same wallet as Primary. Restart the application services. 3DES is the abbreviation for Triple Data Encryption Standard. ERROR: Unable to verify the graphical display setup. perfect doc for TDE enable on RAC PDB/CDB database, Your email address will not be published. I will solely focus on the database upgrade itself. Data is safe (some tools dont encrypt by default). Yes, a hybrid setup is sometimes used. To configure Auto Login Wallet in Oracle 19c there are few parameters which needs to be set in spfile. We should copy the entire wallet to node 2 for enabling to use TDE. Check the below output. standby or testing database. As you can see autologin wallet is open and enabled, now there is no overhead of opening or closing the wallet. To implement TDE you should follow the following steps: 1. Based on Database Advanced Security Guide - Oracle 12c Documentation. I mean not encrypted. And the team is still working hard on a solution to make the non-CDB to PDB plugin flawless and automated for such cases. (LogOut/ Your email address will not be published. keystore altered. SQL> alter system set WALLET_ROOT=${ORACLE_BASE}/admin/${ORACLE_SID}/wallet scope=spfile; In earlier releases, This is specified in the sqlnet.ora file like this : [oracle@Prod22 ~]$ cd $ORACLE_HOME/network/admin NAME TYPE VALUE Download the 19c software from the link and stage the file in oracle home directory. (b)Generate the Master key using a two-step process. .19c.env Transparent Data Encryption (TDE) tablespace encryption encrypts or decrypts data during read and write operations, as opposed to TDE column encryption, which encrypts and decrypts data at the SQL layer. Unzip Oracle Instant Client Packages. Experienced Database Engineer learning Cloud Stuff (Azure and GCP). There're more ways to copy ASM files from one place to another, or vice versa. CMEK (customer-managed encryption keys) are supported for TDE encryption. Transparent Data Encryption (TDE) enables you to encrypt sensitive data that you store in tables and tablespaces. To help secure a user database, you can take precautions like: Designing a secure system. TDE is part of Oracle Advanced Security, which also includes Data Redaction. Existing tablespaces can be encrypted online with zero downtime on production systems or encrypted offline with no storage overhead during a maintenance period. Transparent data encryption (TDE) encrypts SQL Server, Azure SQL Database, and Azure Synapse Analytics data files. Data is transparently decrypted for an authorized user having the necessary privileges to view or modify the data. When a table contains encrypted columns, TDE uses a single TDE table key regardless of the number of encrypted columns. 1 oracle oinstall 68165632 Jun 21 20:41 temp01.dbf TDE tablespace encryption uses the two-tiered, key-based architecture to transparently encrypt (and decrypt) tablespaces. From the query above you can check that it is still not autologin. This time you will see the value. Encrypting confidential assets. Steps to configure Transparent Data Encryption in Oracle. Moreover, tablespace encryption in particular leverages hardware-based crypto acceleration where it is available, minimizing the performance impact even further to the 'near-zero' range. clprod.env, Total System Global Area 16106127360 bytes. SQL> grant connect,resource to hari; AES256: Sets the key length to 256 bits. Our recommendation is to use TDE tablespace encryption. If you want to encrypt your tables with AES256 then you must specify the encryption type in the command as follows, To check the columns that have been encrypted run this query. Note: no separate effort is required on standby instance in case of creating new tablespace with tde encryption enabled. keystore altered. Oracle Encryption Wallet Version 12.2; General Information . We can encrypt both the tablespace and individual table columns using TDE. We can observe whether the behavior of TDE is persistent or not after a restart. As you can see, the plain text in the normal data file is shown. This encryption is known as encrypting data at rest. The TDE option is a permanent option that cant be removed from an option group. Set Wallet Parameters. How to Resolve ORA-00283: recovery session canceled due to errors, How to Resolve ORA-65118: operation affecting a pluggable database cannot be performed from another pluggable database. 1 oracle oinstall 209715712 Jun 21 19:12 redo03.log Database Buffers 2466250752 bytes Step 4: Create Tablespace With ENCRYPTION. -rw-r. Until recently, however, process for on-premises databases was different. 1 oracle oinstall 1038098432 Jun 21 21:21 system01.dbf The following are summary steps to setup network encryption using TLS through orapki utility on the database server. ( 1) Before attempting to enable encryption, a wallet/keystore must be created to hold the encryption key. SQL> startup total 8 Oracle offers a comprehensive and fully integrated stack of cloud applications and platform services. TDE integration with Exadata Hybrid Columnar Compression (EHCC) compresses data first, improving cryptographic performance by greatly reducing the total amount of data to encrypt and decrypt. What is TDE (Transparent Data Encryption), How To Restore TDE Wallet Files From Backup in Oracle Database, how to check if oracle database is encrypted, TDE encryption in oracle 11g step by step, How to check encrypted tablespace in the Database, How To Export -Import TDE Master Encryption Key. However, the data in transit can be encrypted using Oracle's Native Network Encryption or TLS. Database opened. TDE tablespace encryption has better, more consistent performance characteristics in most cases. Version 19.11.0.0.0. Database Tablespace default encryption algorithm from AES128. This feature automatically encrypts data before it is written to storage and automatically decrypts data when the data is read from storage. For separation of duties, these commands are accessible only to security administrators who hold the new SYSKM administrative privilege or higher. 1 oracle oinstall 10600448 Jun 21 21:27 control01.ctl. Multiple synchronization points along the way capture updates to data from queries that executed during the process. We suggest you try the following to help find what youre looking for: TDE transparently encrypts data at rest in Oracle Databases. To avoid the step 8 situation, we can create an auto-login Keystore. Transparent Data Encryption: What's New In 19c: What . You can perform other keystore operations, such as exporting TDE master encryption keys, rotating the keystore password, merging keystores, or backing up keystores, from a single instance only. TDE can encrypt entire application tablespaces or specific sensitive columns. In the event that the data files on a disk or backup media are stolen, the data is not compromised. -rw-r. The vendor also is responsible for testing and ensuring high-availability of the TDE master encryption key in diverse database server environments and configurations. How to Configure TDE in Oracle 19c Standalone Database in Oracle Linux 7.9: In this video, I will demonstrate how we can configure TDE in . There're 5 major steps to enable Oracle Transparent Data Encryption (TDE) 19c on a RAC database in this post. In this article we will discuss about enabling Transparent Data Encryption - TDE in Oracle 19c. 1 oracle oinstall 52436992 Jun 21 20:40 tde_tbs1.dbf For these purposes, we are going to use software keystore because it provides more flexibility and initially costs less to implement. ALTER SYSTEM SET WALLET_ROOT='C:\ORACLE\admin\cdb1\wallet' SCOPE=SPFILE SID='*'; --Shutdown immediate and Startup before set run following command --No need to reboot ALTER . We successfully configured the TDE, now it's time to create encrypted tablespace. TDE also benefits from support of hardware cryptographic acceleration on server processors in Exadata. Twitter :https://twitter.com/oracledbwr, In SQL> alter tablespace users encryption online encrypt; Save my name, email, and website in this browser for the next time I comment. The process is not entirely automated, so you must handle the TDE encryption key manually. Transparent Data Encryption (TDE) column encryption protects confidential data, such as credit card and Social Security numbers, that is stored in table columns.. TDE column encryption uses the two-tiered key-based architecture to transparently encrypt and decrypt sensitive table columns. In this article we will discuss about enabling Transparent Data Encryption TDE in Oracle 19c. MySQL Enterprise TDE uses a two-tier encryption key architecture, consisting of a master encryption key and tablespace keys providing easy key management and rotation. 2. -rw-r. You can use TDE column-encryption functionality to encrypt selected columns of tables. If you import this data into an encrypted tablespace, it will be encrypted, if you import into an unencrypted tablespace, then the data will be unencrypted. Verify that the parameters have been set. To protect these data files, Oracle Database provides Transparent Data Encryption (TDE). So, instead of sqlnet, we are going to use the new parameters WALLET_ROOT and TDE CONFIGURATION. However, you can move the wallet into ASM later if you have changed your mind. Encrypted data remains encrypted in the database, whether it is in tablespace storage files, temporary tablespaces, undo tablespaces, or other files that Oracle Database relies on such as redo logs. keystore altered. To prevent unauthorized decryption, TDE stores the encryption keys in a security module external to the database, called a keystore. Please note that, welcome1 is the password, you should use yours. Grant succeeded. For more details on BYOK,please see the Advanced Security Guideunder Security on the Oracle Database product documentation that is availablehere. By default, TDE stores its master key in an Oracle Wallet, a PKCS#12 standards-based key storage file. ENCRYPT_NEW_TABLESPACES parameter specifies whether the new tablespaces to be created should be implicitly encrypted. This means that most restrictions that apply to TDE column encryption, such as data type restrictions and index type restrictions, do not apply to TDE tablespace encryption. (LogOut/ I have holistic perspective about database infrastructure and performance. I hope you like this content on how to check if the oracle database is . Also, see here for up-to-date summary information regarding Oracle Database certifications and validations. The above guide is true for on-prem environments. All network connections between Key Vault and database servers are encrypted and mutually authenticated using SSL/TLS. Create a wallet/keystore location. Total System Global Area 2936008960 bytes In which , the keystore type that we choose is FILE. Autoupgrade fails with: Execution of Oracle Base utility, /u01/app/oracle/product/19c/dbhome_1/bin/orabase, failed for entry upg1. Step #1 Create a master key. The consent submitted will only be used for data processing originating from this website. total 20 [oracle@Prod22 admin]$ For single-instance databases, the steps are almost the same, just skipping step D to continue. If you didn't specify any encryption algorithm, AES128 is used by default. Create a master key 2. This identification is key to apply further controls to protect your data but not essential to start your encryptionproject. Performance impact analysis of enabling Transparent Data Encryption (TDE) on SQL Server. NAME TYPE VALUE Step 4: Set the TDE Master Encryption Key. (5) We can check the information about the keystore in V$ENCRYPTION_WALLET view. If the database instance is down then the wallet is automatically closed, and you can not access the data unless you open the wallet. We and our partners use data for Personalised ads and content, ad and content measurement, audience insights and product development. TDE helps protect data stored on media (also called data at rest) in the event that the storage media or data file is stolen. In this case, I do not have the master database key on . SQL*Plus: Release 19.0.0.0.0 Production on Mon Jun 21 18:03:22 2021 GSMB, But I won't cover the latter in this post here. Login as the system user. Create a new user in the remote (source) database that would be used for the process of the cloning. . For more information about Oracle (NYSE:ORCL), visit oracle.com. if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[300,250],'techgoeasy_com-medrectangle-4','ezslot_5',109,'0','0'])};__ez_fad_position('div-gpt-ad-techgoeasy_com-medrectangle-4-0');We can Close using the below command, (4) Now, before enabling encryption, we need to activate the master key. if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[300,250],'techgoeasy_com-large-mobile-banner-1','ezslot_4',196,'0','0'])};__ez_fad_position('div-gpt-ad-techgoeasy_com-large-mobile-banner-1-0');We can enable TDE in both the CDB and non-CDB databases. The environment is single instance database. Hello, This video shows you how you can configure wallet and TDE to oracle database 19c.To Follow up with me you can find all the command and queries in my g. 1 oracle oinstall 209715712 Jun 21 19:12 redo03.log 19c database, Oracle Database Security Assessment Tool-Version, https://www.linkedin.com/in/hariprasathdba, https://www.facebook.com/groups/894402327369506/. This will set some TDE-related DB parameters and create a TDE wallet/keystore and generate a master key as well and convert the wallet to an autologin wallet. SQL> exit STEP 2: Configure the Keystore Location and Type, STEP 5: Configure Auto Login Keystore and check the status, STEP 7: Set the Keystore TDE Encryption Master Key. (3) Now, before using the Keystore, we need to open the keystore.Here is the command to open and close it. If the malicious user tries to open the file using a HEX editor (like UltraEdit), then only non-printable characters will be present. -rw-r. In previous releases, the SQLNET.ENCRYPTION_WALLET_LOCATION parameter was used to define the keystore directory location. Setting up TDE (Transparent Data Encryption) in 19c is very easy and these are the steps needed. Environment for this . -rw-r. System altered. We have downloaded packages of Oracle instant client and uploaded 2 of them to the user's home directory. What is TDE implementation? Save my name, email, and website in this browser for the next time I comment. If a wallet already exists skip this step. In addition to using SQL commands, you can manage TDE master keys using Oracle Enterprise Manager 12c or 13c. . 1 oracle oinstall 4187 Jun 21 19:12 ewallet.p12 Transparent Data Encryption (TDE) column encryption protects confidential data, such as credit card and Social Security numbers, that is stored in table columns. Database Administrator III 1. 3DES168: Sets the key length to 168 bits. Check if you have a master key on the master database already, create one if you do not have it. tde_configuration string, SQL> show parameter wallet_root This TDE master encryption key is used to encrypt the TDE tablespace encryption key, which in turn is used to encrypt and decrypt data in the tablespace. -rw-. For single-instance databases, the steps are almost the same, just skipping step D to continue. For any work, queries and help. -rw-. My Oracle Support provides customers with access to over a million knowledge articles and a vibrant support community of peers and Oracle experts. Ideally wallet directory should be empty. When using PKCS11, the third-party vendor provides the storage device, PKCS11 software client library, secure communication from the device to the PKCS11 client (running on the database server), authentication, auditing, and other related functionality. TDE helps protect data stored on media (also called data at rest) in the event that the storage media or data file is stolen. TDE is fully integrated with Oracle database. If necessary, create a wallet directory. Variable Size 452984832 bytes TDE addresses encryption requirements associated with public and private privacy and . For reducing manual intervention during cloning, we can enable ONE_STEP_PLUGIN_FOR_PDB_WITH_TDE whitin both scope. Oracle 11.2. . Set Wallet Parameters. Guide Oracle 11G Administration In Simple Steps Oracle Database 11g New Features Oracle Business Intelligence 11g Developers . GSMB, From 19c onwords no need go for Offline Encryption.This method creates a new datafile with encrypted data. Required fields are marked *. (1) Before attempting to enable encryption, a wallet/keystore must be created to hold the encryption key. (METHOD_DATA= For more details on TDE column encryption specific to your Oracle Database version,please see the Advanced Security Guideunder Security on the Oracle Database product documentation that is availablehere. In fact, for databases in the Oracle Cloud, TDE is ON by default with no configuration needed. Change), You are commenting using your Facebook account. In this exercise, we are considering the 19c Oracle Enterprise database without container databases. Oracle data encryption is called Transparent Data Encryption (TDE). TDE is fully integrated with the Oracle database. Which is used to encrypt the sensitive data at table level and tablespace level also. NAME TYPE VALUE connect by level <= 10; AES128: Sets the key length to 128 bits. Please contact us at contactus@smarttechways.com, Configuring Transparent Data Encryption (TDE) in Oracle 19c or 12cPDBs, Create an exe file from the python program withpyinstaller, Follow Smart way of Technology on WordPress.com. ORACLE instance started. Set TDE Master Key. . Customers with many Oracle databases and other encrypted Oracle servers can license and useOracle Key Vault, a security hardened software appliance that provides centralized key and wallet management for the enterprise. 2. It uses industry standard OASIS Key Management Interoperability Protocol (KMIP) for communications. With the release Oracle 18c later 19c this functionality was added again step by step. TDE stands for Transparent Data Encryption. Wallet configuration in SQLNET.ORA therefore no longer needed. Check the Undo tablespace Usage in Oracle, Missing Dependencies Python Core / win32api, Exclude/Include option in EXPDP and IMPDP Datapump, Find the temp usage by sessions in Oracle, Stop the EXPDP/IMPDP Datapump Job in Oracle, Create & grant permission to directory in Oracle, Check primary and standby databases are in sync Dataguard. For more best practices for your specific Oracle Database version,please see the Advanced Security Guideunder Security on the Oracle Database product documentation that is availablehere. Customers using TDE column encryption will get the full benefit of compression only on table columns that are not encrypted. Each TDE table key is individually encrypted with the TDE master encryption key. You can also modify an option group that includes the TDE option by adding or removing other options. 1 oracle oinstall 2600 Jun 21 19:02 cwallet.sso Encrypted data is transparently decrypted for a database user or application that has access to data. You can set the ENCRYPT_NEW_TABLESPACES database initialization parameter to automatically encrypt future tablespaces that you create. The ENCRYPTED column of the DBA_TABLESPACES and USER_TABLESPACES views indicates if the tablespace is encrypted or not. This procedure encrypts on standby first (using DataPump Export/Import), switches over, and then encrypts on the new standby. Fixed Size 8900864 bytes [oracle@dev19c ~]$ export ORACLE_SID=chennai. -rw-r. Transparent Data Encryption (TDE) enables you to encrypt sensitive data, such as credit card numbers, stored in tables and tablespaces. how to extract plain text from a normal, non-encrypted data file, more ways to copy ASM files from one place to another, or vice versa, the plain text in the normal data file is shown, How to Install Oracle Database 19.18 on Linux, How to Install Oracle Database 19c on Linux, How to Install Oracle Instant Client 19c on Linux, How to Resolve ORA-01720: grant option does not exist. Step 1: Check TDE status. Database Buffers 2466250752 bytes Encrypt DATA. If the tablespace is moved and the master key is not available, the secondary database will return an error when the data in the tablespace is accessed. Consider suitability for your use cases in advance. Copy the backup file and the private key file to the server where you are going to restore the Transparent data encryption (TDE) enabled database backup. Change). The default algorithm is AES128. New commands has been introduced in oracle 12c for enabling Transperant data encryption.ADMINISTER KEY MANAGEMENT will replace the previous commands like ALTER SYSTEM SET ENCRYPTION WALLET and Wallet is known as keystore in 12c. Learn about Rackspace Managed Oracle Applications. Support for hardware-based crypto accelaration is available since Oracle Database 11g Release 2 Patchset 1 (11.2.0.2) for Intel chipsets with AES-NI and modern Oracle SPARC processors. We can use the below methods. This approach includes certain restrictions described in Oracle Database 12c product documentation. To open password-protected keystore, we should use FORCE KEYSTORE clause, no matter which container you're in. Customers using TDE tablespace encryption get the full benefit of compression (standard and Advanced Compression, as well as Exadata Hybrid Columnar Compression (EHCC)) because compression is applied before the data blocks are encrypted. 1 oracle oinstall 209715712 Jun 21 18:41 redo02.log As you can see in the wallet_type column value is unknown, which means the wallet is not configured yet. TDE master key management uses standards such as PKCS#12 and PKCS#5 for Oracle Wallet keystore. Version 19.11.0.0.0 Starting with Oracle 19c, you can configure both encryption settings at the same time in the database server level. Update/edit the encrypt_prod_tspaces2.sql and run it to start the encryption for other tablespaces. The search order for finding the wallet is as follows: if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[300,250],'techgoeasy_com-box-4','ezslot_3',192,'0','0'])};__ez_fad_position('div-gpt-ad-techgoeasy_com-box-4-0');If present, the location specified by the ENCRYPTION_WALLET_LOCATION parameter in the sqlnet.ora file.If present, the location specified by the WALLET_LOCATION parameter in the sqlnet.ora file.The default location for the wallet. Environment Details:-. In this article we are going to see step by Step to configure Oracle 19c Data Guard Physical Standby. Question: . Save my name, email, and website in this browser for the next time I comment. This step is identical with the one performed with SECUREFILES. TDE is transparent to business applications and does not require application changes. Lets have a high-level overview of the TDE implementation in the Oracle Database. A variety of helpful information is available on this page including product data sheet, customer references, videos, tutorials, and more. Steps to configure Transparent Data Encryption in Oracle Configure the Software Keystore Location. total 2721356 Set the master encryption key by executing the following command: Hi, I am working in IT industry with having more than 10 year of experience, worked as an Oracle DBA with a Company and handling different databases like Oracle, SQL Server , DB2 etc Change), You are commenting using your Twitter account. The TDE master encryption key is stored in a security module (Oracle wallet, Oracle Key Vault, or Oracle Cloud Infrastructure key management system (KMS)). Oracle Database uses authentication, authorization, and auditing mechanisms to secure data in the database, but not in the operating system data files where data is stored. [oracle@Prod22 ~]$ . Use separate key stores/wallets for each environment. Some application vendors do a deeper integration and provide TDE configuration steps using their own toolkits. 1:- Create a backup of spfile/initfile (it is always a good practice to create a backup before any change on the DB): The TDE full form is transparent data encryption. Disconnected from Oracle Database 19c Enterprise Edition Release 19.0.0.0.0 Production Data Pump can either export it encrypted or unencrypted, it is up to your expdp parameters. How Transparent Data Encryption Works in a Multitenant Environment; ADMINISTER KEY MANAGEMENT; Transparent Data Encryption (TDE) in Oracle 10g Database Release 2; Tablespace Encryption in Oracle 11g Database Release 1; TDE Wallet Problem in 12c: Cannot do a Set Key operation when an auto-login wallet is present (Doc ID 1944507.1) Hope this helps.