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Questions tagged [transparent-data-encryption]

Transparent Data Encryption, a feature used to provide protection for data at rest.

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Clarifications on Transparent Data Encryption

This is the first time we are applying TDE on production databases that are critical and I have the questions below. While TDE is in progress: Can we still access the application that is working on ...
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Change Encryption Wallet type from PASSWORD to AUTOLOGIN

I am currently working on an Oracle 18.3 DB and I have a script which allows me to create an encrypted seed PDB. As part of this script, we encrypt the system tablespaces (like SYSTEM, SYSAUX, and ...
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Will TDE encryption protect my SQL database from hacker in this scenario

I'm a bit understand that TDE encryption protect the database from being stolen and read by a hacker. However, I don't understand if it can help me in this scenario: If a hacker got into my server and ...
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How do you use pvkconverter.exe - not working for me?

I tried to following this link to convert a .pfx file to the .cer and .pvk file pair. When I run this command, "C:\Program Files (x86)\Microsoft\PVKConverter\PVKConverter.exe" -i TDE_Cert.pfx -o ...
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42 views

Data Security in MS SQL Server

How do I store the sensitive information on SQL server?. We have policy guidelines, DBA and Development engineers are not allowed to view the data as plain text. I am aware of the encryption ...
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37 views

Generate the statistics of a table after truncating it and then repopulate it?

Is it necessary to generate the statistics of a table after truncating it and then repopulate it? I have a table with several million rows in Oracle.Every week new data is recharged, truncating the ...
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Restore fails on unencrypted database

I tried to restore an unencrypted database to a different server and it failed with the error: "Cannot find certificate with thumbprint". This suggests the database is encrypted but it is not. ...
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I only have backup of a TDE encrypted SQL Server database--can it be restored it to another server?

My situation is little weird--I have no access to the source database server, but I do have the database backups of a database that is encrypted with TDE. When I restore it to another server, I am ...
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Enabling TDE on PRODUCTION Servers - Guidance , Suggestions and Testing TDE ways

First of all just want to say , I am completely new to Transparent Data Encryption. Can I get some guidance on things to keep in mind while I am enabling TDE on Critical PRODUCTION Servers. I have ...
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Script to automate enabling TDE on any unencypted user databases

I'm looking for a way to automate the encryption of user databases. Ideally this would be a job that can be scheduled to run every night. The job would: find any user database that is not encrypted, ...
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52 views

Enabling TDE on SQL Server AOAG 2014 Databases - Guidance

I am completely new to Transparent Data encryption and please help me on below questions related to enabling the TDE on existing PRODUCTION Databases. Primary Question: What are the things which I ...
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190 views

Best practice around non-production databases refreshes and TDE

Say we have a production system with several databases encrypted using TDE and a self-generated certificate. We regularly need to take this database and refresh our non-production systems. This ...
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TDE using EKM device

We use an external HSM device to create and store keys and use it for TDE. Our auditors are asking questions about where the keys are store. So obviously the key is stored in the external HSM device. ...
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334 views

How can I enable Transparent Data encryption (TDE) on MySQL 5.6

I am looking to perform real-time I/O encryption and decryption on MySQL 5.6 Database. I have few questions to understand Transparent Date Encryption (TDE): Note: I am using AlibabaCloud Can I ...
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1answer
48 views

Restoring MS SQL TDE database question

I'm new to SQL Server TDE and have a question. I have two VM's (VM1 = Source and VM2 = Target). On the source machine, I executed all the required steps to enable my Test database as well as backing ...
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117 views

Disabling TDE on AlwaysOn database

Which are the correct steps to disable (not removing) TDE on a AlwaysOn database in an availability group? I found steps for removing TDE but that involves removing the availability group and ...
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Mirrored TDE DB Performance

Performing a large index reorg on a mirrored SQL Server 2014 TDE database creates a large redo log on the mirror and the mirroring monitor displays an infinite restore time. The exact same process ...
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359 views

Change expiry date of TDE certificate of User Database without changing Thumbprint

I have been searching through internet on how to change expiry date of TDE certification of a user database at SQL Server 2014 SP2 and got so many articles and most of them are suggesting to drop and ...
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241 views

Disadvantages of TDE [closed]

Is there any effect at the application end, if you configure TDE for Production databases, which are in both replication and Always On Availability Groups in SQL Server 2014 Enterprise Edition? This ...
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179 views

SQL Server 2008 Database encryption

In my company there is MS SQL SERVER 2008 standard edition installed. My problem is we want to encrypt whole database but in standard edition there is encryption like transparent-data-encryption(TDE) ...
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2answers
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Trying to read a log file encrypted by TDE

I have a full chain of full backups and log backups. I am looking to investigate exactly what transaction was done by a certain user in a given period of time. The database (thus all backups) are ...
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How can I confim that Master encryption key is created in Oracle TDE?

I create Master encryption key using ADMINISTER KEY MANAGEMENT SET KEY IDENTIFIED BY "key_agent_password"; on external keystore but Since I don't have any element eg. Keyname or KeyID to match, how ...
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1answer
225 views

TDE enabled database backup taking too long

We have recently implemented TDE and backup compression is also enabled. Before TDE backup used to take about 20min but now it takes about one hour. I have set @MaxTransferSize to 3MB, 2MB, 1MB and ...
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Alternatives to User Defined Performance Counters for CPU Monitoring - SQL 2014

I want to monitor CPU usage before implementing TDE on several production SQL Servers. My plan was to use user defined performance counters, over a period of a couple of days, counters as defined ...
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1answer
196 views

Restore SQL Server DB encrypted by EKM - where's the asymmetric key?

MS is clear about restoring TDE backups: Certificate has to be restored on destination OR, in case of EKM, the asymmetric key " When moving a TDE protected database, you must also move the ...
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1answer
85 views

Is it (always) necessary to backup a certificate with private key?

I'm starting a project to encrypt database files. I've created a master key and a certificate the following way: USE master; GO CREATE MASTER KEY ENCRYPTION BY PASSWORD = 'Master_K3y'; GO CREATE ...
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1answer
121 views

Is there any approach for encrypting mysql column by key?

I have a scenario for encrypting user information in mysql db. Is there any approach to encrypting column by key. This key information will be there in application configuration file. This key we won'...
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Exact encryption being used by Oracle 12

Working with an existing Oracle 12c database which has been configured for encrypted tables. Existing DBA says that it has been configured with AES256 CBC encryption. I was able to find the AES256 ...
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1answer
1k views

Microsoft SQL Server 2016 Service Pack 1 (SP1) support for TDE (transparent data encryption)

Does Microsoft SQL Server 2016 Service Pack 1 add support for TDE (Transparent Data Encryption) to Standard Edition as well? As per What's new in Database Engine - SQL Server 2016 and A Big Deal : ...
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113 views

Using TDE and SQL Server 2016 AlwaysOn Availability Groups

We currently use SQL Server 2012 AG are in process of migrating to SQL 2016. We use EMC SAN for storage and it provides the data encryption at rest on hardware level. Some folks are thinking about ...
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Do any databases other than SAP ASE support key custodians?

SAP Sybase ASE supports the notion of a key custodian. This allows for a setup where the trust can be split between two roles: the database administrator and a key custodian. The database ...
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1answer
190 views

Backup errors after TDE certificate expired and new cert was created with AlwaysOn

I have 2 databases in AlwaysOn with TDE enabled. My TDE cert expired and i created a new one but Ola's Backup script is still failing: EXECUTE [dbo].[DatabaseBackup] @Databases = 'DB1, DB2', @...
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Backup Compression Causing Corruption In SQL 2017 TDE Database

On SQL Server 2017 (CU3), whenever I enable backup compression on one of my TDE databases, the backup process always corrupts a specific page in the database. If I run the backup without compression, ...
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368 views

SQL 2016 Always encrypted for all data?

I have been tasked with encrypting all data on an SQL database (SQL 2016 standard). However this doesnt support TDE (Transparent Data Encryption) when I try I get the below error. Transparent Data ...
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183 views

Cloning a PDB from one CDB into another CDB with TDE enabled at source and target

What are the possible ways to Clone a PDB from one CDB into another CDB (in a different host) with TDE enabled at both source and target. At present i am able to think of the following two a) Data ...
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1answer
761 views

TDE Encryption on database tripled size of backup files

After enabling TDE Encryption my database backup file .bak is 3x larger than before. Is there a way to improve this? Is this due to compression not being as efficient on an encrypted file?
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BACKUP MASTER KEY failing with cannot find symmetric master key because it does not exist

I'm trying to backup the master key for a TDE database, but SQL Server says there isn't one. It's a bit weird, but I'm sure I'm just doing something wrong. I'm sysadmin on the server, so I should be ...
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TDE cannot encrypt database

In order to encrypt a SQL db, I run the following commands: CREATE CERTIFICATE <certname> ENCRYPTION BY PASSWORD = '<UseStrongPasswordHere>' WITH SUBJECT = 'certificate subject', ...
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1answer
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Swapping TDE Cert Slow, any way to improve performance?

Fair warning, I am very new to encryption with DBs. Right now we use the following statement to swap certificates when in the process backing/restoring DBs between servers: ALTER DATABASE ENCRYPTION ...
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How to shrink transaction log for a database that was previously in AlwaysOn Availability Group?

I need to move databases having TDE enabled to another instance and re-enable the TDE with a different certificate. Generally, this would not be a problem but I seem to have problems if the databases ...
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1answer
156 views

TDE Performance and Cost Threshold for Parallelism

Is there any documentation, test data, or other evidence to suggest that the Cost Threshold for Parallelism (CTP) setting might impact performance when TDE is enabled on a database? Without going ...
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3answers
342 views

What do I need to restore an encrypted MSSQL database?

I am trying to get my head around MSSQL TDE encryption. I have followed these steps to encrypt a database: 1) Create a master key on the master database: USE master GO CREATE MASTER KEY ENCRYPTION ...
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320 views

Is network traffic encrypted when writing remote backups using SQL Server TDE?

They do say there is no such thing as a “stupid question”, so here goes: I understand that SQL Server Transparent Data Encryption (TDE) encrypts data at rest, so that your database files (.mdf) and ...
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1answer
52 views

encrypting live data in SQL Azure

We are using webjob in azure which imports data every 2 hours into the tables I've created in the cloud. As I read it from here, I can encrypt the db very easily using azure TDE feature. But I am ...
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1answer
351 views

TDE Change Encryption Key - Is it safe?

We use SQL Server 2012 Enterprise Edition and Transparent Data Encryption (TDE). Microsoft have a command to let you change the encryption on the database "ALTER DATABASE ENCRYPTION KEY". The docs ...
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1answer
448 views

How can I prevent our IT admins with sysadmin to read data stored inside an encrypted database? [closed]

I built a web application that stores sensitive data into a SQL Enterprise 2014 database with TDE encryption. My key is safe; I know if someone steals the database file from disk the data is protected....
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3answers
211 views

Deploying transparent data encryption

I have an installation of SQL 2016 Enterprise and my boss want to deploy TDE. I googled online and all the instruction said about "you can use a self sign certificate for test/dev purpose". Most ...
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1answer
371 views

Backup Failure on SQL TDE Database with Maxtransfersize Specified for Compression

Recently, my company has upgraded to 2016 and enabled TDE on all of our databases. Additionally, we have the production databases replicated on high availability servers. Our backups are taken from ...
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Unable to restore TDE enabled database when MAXTRANSFERSIZE and CHECKSUM is used

Update: @AmitBanerjee - Senior Program Manager for the Microsoft SQL Server Product Group confirmed that MS will look into the issue as it is a defect. Has anyone encountered issue restoring backups ...
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2answers
516 views

Removing TDE from server

I have removed Transparent Data Encryption (TDE) from my server, dropped the key and switched the databases to Simple, shrunk the log and then back to Full. The LOG backups are now smaller as well as ...