April 1999
Intermediate to advanced
552 pages
15h 39m
English
Content preview from Oracle Distributed Systems
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.
DBMS_RECTIFIER_DIFF: Comparing Replicated Tables
If you are not sure whether the data at two sites are identical, you can use the DBMS_RECTIFIER_DIFF package to find out.
How the Package Is Used
The DBMS_RECTIFIER_DIFF’s DIFFERENCES procedure compares two instantiations of a table. The table at one of two sites is considered the reference, or “truth” table, and the other is the “comparison” table. The procedure stores discrepancies between the truth table and comparison table in a “missing rows” table, which the user must create. If differences exist, the DBA can use the RECTIFY procedure to synchronize the comparison table with the truth table. The truth table is not modified.
Installation and Access
The DBMS_RECTIFIER_DIFF package iscreated when the Oracle database is installed. The
dbmsrepc.sql script (found in the built-in packages source
directory) contains the source code for this package’s
specification. This script is called by
catrep.sql, which must be run to install the
advanced replication packages. The wrapped SQL script
prvtrctf.sqlcreates the public synonym DBMS_RECTIFIER_DIFF. No
EXECUTE privileges are granted on DBMS_RECTIFIER_DIFF; only
the owner (SYS) and those with the EXECUTE ANY PROCEDURE system
privilege may execute the package.
DBMS_RECTIFIER_DIFF Procedures
Procedure Name | Description |
|---|---|
DIFFERENCES | Determines differences between the truth table and the comparison table |
RECTIFY | Synchronizes the comparison table with the truth table |
DBMS_RECTIFIER_DIFF Exceptions
Exception ... |
|---|
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Read now
Unlock full access
More than 5,000 organizations count on O’Reilly
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.