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Oracle instance names must not contain Oracle version numbers.


Finding ID Version Rule ID IA Controls Severity
V-219825 O121-BP-021300 SV-219825r533016_rule Medium
Service names may be discovered by unauthenticated users. If the service name includes version numbers or other database product information, a malicious user may use that information to develop a targeted attack.
Oracle Database 12c Security Technical Implementation Guide 2022-06-13


Check Text ( C-21536r533014_chk )
From SQL*Plus:

select instance_name from v$instance;
select version from v$instance;

If the instance name returned references the Oracle release number, this is a finding.

Numbers used that include version numbers by coincidence are not a finding.

The DBA should be able to relate the significance of the presence of a digit in the SID.
Fix Text (F-21535r533015_fix)
Follow the instructions in Oracle MetaLink Note 15390.1 (and related documents) to change the SID for the database without re-creating the database to a value that does not identify the Oracle version.