Troubleshooting Guide for ORA-47401 Errors in Autonomous DB ATP

Comprehensive Troubleshooting Guide for ORA-47401 Errors in Oracle Autonomous Database (ATP) ADBS

Oracle Autonomous Database (ATP) is engineered with one of the most advanced security architectures in the industry. A critical part of this architecture is Oracle Database Vault (DV) — a component that enforces operational boundaries even for privileged users. DV is mandatory in Autonomous environments and protects all Oracle-managed structures.

According to Oracle:

“Autonomous Database includes Oracle Database Vault enabled by default to protect Oracle-supplied schemas, data dictionary objects, and Oracle-managed metadata.”
Source: Oracle Autonomous Database Security Guide – Database Vault Protection
https://docs.oracle.com/en/cloud/paas/autonomous-database/adbsa/oracle-database-vault-protection.html

The ORA-47401 error represents Database Vault enforcement failures, including:

• Attempts to access objects within protected Realm boundaries
• Attempts to execute blocked SQL commands
• Attempts to modify Oracle-managed schemas
• Actions disallowed by DV identity or factor rules
• Operations restricted by Autonomous Database platform governance

Database Vault overrides even high-level privileges such as:

• ADMIN
• PDB_ADMIN
• GRANT ANY privilege
• CREATE ANY privilege
• ALTER ANY privilege

1. Detailed Breakdown of Common ORA-47401 Errors

1.1 ORA-47401 — Realm Violation

ORA-47401: Realm violation for <operation> on <schema>.<object>
--This is the most common DV error encountered.

Why it happens:

• The schema is protected by a DV Realm
• The object is protected by a DV Realm
• You attempted DDL or restricted DML without Realm authorization

Realm violations occur even for ADMIN users.

How to diagnose:

SELECT name, description, enabled
FROM dba_dv_realm
ORDER BY name;

SELECT realm_name, owner, object_name, object_type
FROM dba_dv_realm_object
ORDER BY realm_name, owner, object_name;


Oracle reference for DV Realms:
📘 https://docs.oracle.com/en/database/oracle/oracle-database/19/dvadm/oracle-database-vault-realms.html

1.2 ORA-47391 / ORA-47392 — Command Rule Violations

Occurs when ATP blocks a specific SQL command via DV Command Rules.

Example:

ORA-47391: Command rule violation: ALTER SYSTEM is not allowed


These controls are documented:

📘 Autonomous DB Restricted Features
https://docs.oracle.com/en/cloud/paas/autonomous-database/adbsa/features-that-are-restricted.html

1.3 ORA-47500 Series — Mandatory Autonomous Database Controls

Example:

ORA-47500: Cannot modify Oracle-managed objects in Autonomous Database


This is thrown when platform-level protections disallow:

• Schema changes to Oracle-managed accounts
• Modifying data dictionary objects

Oracle documentation confirms:

“Oracle-supplied schemas cannot be modified in Autonomous Database.”
📘 Source: Manage Users in ATP
https://docs.oracle.com/en/cloud/paas/autonomous-database/adbsa/manage-database-users.html

2. Step-by-Step Troubleshooting Process

Below is the full diagnostic ladder to troubleshoot any ORA-47xxx failure.

Step 1: Identify the exact ORA- error number

Step 2: Check if the schema is Oracle-managed

Below are few examples of Oracle-supplied schemas:

• APEX_*
• ORDS metadata schemas
• Cloud operations schemas

These cannot be modified.

Oracle documentation:
📘 ADB Restrictions
https://docs.oracle.com/en/cloud/paas/autonomous-database/adbsa/restrictions.html

Step 3: Check Realm protections

SELECT realm_name, owner
FROM dba_dv_realm_object
ORDER BY realm_name;


If an entire schema is protected with:

OBJECT_NAME = %
OBJECT_TYPE = ANY

→ DDL is blocked by design.

Step 4: Check DV Command Rules

SELECT command, rule_set_name
FROM dba_dv_command_rule;
If a command is listed, ATP restricts it.

Step 5: Verify DV Factors or Identity Restrictions

SELECT factor_name, status
FROM dba_dv_factor;


Step 6: Determine if the operation is Cloud-restricted

Some actions are blocked not by DV alone but by the Autonomous platform layer.

Step 7: Choose ATP-safe alternatives

• Use custom schemas
• Avoid modifying Oracle-managed schemas
• Use Autonomous APIs instead of system commands
• Avoid DDL in protected schemas
• Respect command rule restrictions

Step 8: For testing purpose ONLY — temporary DV authorization modification

If you have DVOWNER:

EXEC DBMS_MACADM.ADD_AUTH_TO_REALM(...)

→ perform your action
→ then remove authorization

This must never be used on highly data sensitive production environments.

3. Security & Compliance Warnings

Oracle explicitly warns that:

“Database Vault cannot be disabled and its protections are mandatory.”

This implies:

• Never attempt Realm modifications on production
• Never authorize users into Oracle-managed Realms
• Never create objects inside Oracle-supplied schemas
• Never bypass command rules
• All DV events are logged and auditable

4. Final Recommendations

• Expect ORA-47xxx errors when touching protected ATP components
• Understand that Realm-level protection overrides privileges
• Investigate using DV views before acting
• Follow Oracle guidelines for DV boundaries