sql_undo > 2048

From: Herring Dave - dherri <Dave.Herring_at_acxiom.com>
Date: Sat, 18 Feb 2006 12:46:54 -0600
Message-ID: <7ED53A68952D3B4C9540B4EFA5C76E3601785B0F@CWYMSX04.Corp.Acxiom.net>

Anyone have a good way of managing output from V$LOGMNR_CONTENTS.SQL_UNDO when the undo statements span 3 rows within V$LOGMNR_CONTENTS? I'm on Oracle 9.2.0.6 and need to undo about 200,000 INSERTs from last night. Unfortunately, I'm finding that the undo statements are sometimes near 12000 characters (4000 per SQL_UNDO x 3 rows). If I spool the results at the UNIX level, lines > 2048 are cut in 2. If I spool to c:\ on my laptop, sqlplus/sql*worksheet changes long, I get 4000 per line like SQL_UNDO is defined as, but even that splits in mid column_name at times.

Here's what I'm using to grab the undo statements:

SET ECHO off FEEDBACK off HEADING off LINESIZE 4000 PAGESIZE 10000 TERMOUT off
spool undo_inserts.sql
SELECT REPLACE(sql_undo,'"')
  FROM v$logmnr_contents
 ORDER BY rs_id, scn;
spool off

I tried using DBMS_LOGMNR.PRINT_PRETTY_SQL when starting logmnr, but still some lines get cutoff in mid column name.

Anyone else dealt with this (successfully)? I started playing around with using layered SUBSTRs with INSTR on ' ', to grab 2048 of a line, up through the next to last word, but after 34+ hrs of no sleep I'm starting to lose it.

Dave

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Dave Herring, DBA
Acxiom Corporation
3333 Finley
Downers Grove, IL 60515
wk: 630.944.4762
<mailto:dherri_at_acxiom.com>

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Received on Sat Feb 18 2006 - 12:46:54 CST