Information
The BACKGROUND_CORE_DUMP parameter in Oracle's init.ora file specifies the level of detail captured in core dumps generated by background processes during an exception. Setting this parameter to FULL enables the creation of detailed SGA dumps, which may include sensitive information.
Allowing BACKGROUND_CORE_DUMP to be set to FULL increases the risk of exposing sensitive data, such as encryption keys, passwords, or other confidential information, in the core dump files. These files could be accessed by unauthorized users, leading to data breaches. Limiting the detail in core dumps reduces this risk while still providing enough information for diagnostics.
The use of TDE doesn't prevent, or encrypt the dumps generated by the background processes.
Solution
To remediate this recommendation, execute the following SQL statement.
ALTER SYSTEM SET BACKGROUND_CORE_DUMP='partial' SCOPE=BOTH;