Oracle DBMS_DBCOMP
Version 12.2.0.1

General Information
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Purpose Assumes that a primary database and one or more Data Guard physical standby databases are deployed. The databases should be at least mounted or open before block comparison is run.

Logical standby databases, Far Sync instances, and cascaded standbys cannot be the target database.
AUTHID CURRENT_USER
Dependencies
V$SESSION_LONGOPS    
Documented Yes
First Available 12.2.0.1
Security Model Owned by SYS with EXECUTE granted to SYSBACKUP and SYSDG.
Source {ORACLE_HOME}/rdbms/admin/dbmsdbcomp.sql
Subprograms
DBCOMP    
 
DBCOMP (new 12.2)
Compares database blocks on primary to standby(s) dbms_dbcomp.dbcomp(
datafile   IN VARCHAR2,
outputfile IN VARCHAR2,
block_dump IN BOOLEAN := FALSE);
exec dbms_dbcomp.dbcomp('ALL', '/home/oracle/lost_write_check.txt', TRUE);

-- in a separate SQL*Plus session
SELECT target_desc, sofar, totalwork
FROM v$session_longops
WHERE opname = 'BlockCompare';

TARGET_DESC                      SO FAR  TOTALWORK
----------------------------- --------- ----------
Compared Blocks                  367104     403142
Lost Writes                           0          0

Related Topics
Data Guard
DBMS_COMPARISON
Dumping Oracle
Packages
What's New In 12cR1
What's New In 12cR2

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