"ORA-04020: Deadlock Detected" While Trying To Encrypt a Column Using TDE
Last updated on OCTOBER 31, 2016
Applies to:Advanced Networking Option - Version 10.2.0.4 and later
Information in this document applies to any platform.
When attempting to encrypt a column using Transparent Data Encryption (TDE), the following error occurs.
ORA-04020: deadlock detected while trying to lock object SCOTT.TOP_SECRET
The issue can be reproduced at will with the following steps:
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