Tag Archives: dmu

DMU reports “Need conversion” on table WRI$_SQLSET_DEFINITIONS in Data dictionary

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By chance, right after my “ODC Appreciation Day” post, I’ve been asked to convert a database from character set WE8ISO8859P1 to AL32UTF8 with DMU. Apart from a few well-known issues described in MOS note 2018250.1, I got a “Need conversion” row on table WRI$_SQLSET_DEFINITIONS in data dictionary.

2018_10_26_14_28_56_Database_Migration_Assistant_for_Unicode_sli3775d

Section D.11 of MOS note 2018250.1 states that you can remove “Invalid Binary Representation” in AWR tables (WRI$_%, WRH$_%, WRR$_%) by following MOS note 782974.1 to drop and recreate AWR. I tried this solution as a last resort. Unfortunately, after using catnoawr.sql, most of WRI$_% tables are still there, only 3 of them are dropped. And of course, WRI$_SQLSET_DEFINITIONS remains intact.

What is this table ? What does it contain ?

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ODC Appreciation Day : DMU – Oracle Database Migration Assistant for Unicode

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(Picture from Oracle.com)

It was very difficult for me to choose a topic for #ThanksODC this year 🙂 I finally decided to talk about something very useful, but maybe not so widespread.

For once, I am going to praise a GUI 🙂 : The Oracle Database Migration Assistant for Unicode (DMU). Migrating a database’s character set is not trivial. This is why DMU comes in handy.

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