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CDB_DATA_FILES and V$DATAFILE Not Showing Same Number Of Files (Doc ID 1575725.1)

Last updated on DECEMBER 31, 2019

Applies to:

Oracle Database - Enterprise Edition - Version 12.1.0.1 and later
Oracle Database Cloud Schema Service - Version N/A and later
Oracle Database Exadata Cloud Machine - Version N/A and later
Oracle Database Exadata Express Cloud Service - Version N/A and later
Oracle Cloud Infrastructure - Database Service - Version N/A and later
Information in this document applies to any platform.

Symptoms

Count of datafiles mismatch between CDB_data_files and v$datafile

 SQL> select cdb from v$database;

CDB
---
YES

SQL> show con_name

CON_NAME
------------------------------
CDB$ROOT


SQL> select count(*) from v$datafile;

 COUNT(*)
----------
       10

SQL> select count(*) from cdb_data_files;

 COUNT(*)
----------
        6

Changes

 

Cause

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In this Document
Symptoms
Changes
Cause
Solution
References


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