Changing the ClearQuest data code page value

You can change the Rational® ClearQuest® data code page of your schema repository from 20127 (ASCII) to a non-ASCII code page at any time without corrupting the data.

However, if you set the data code page to a non-ASCII value, subsequently changing it to another code page might cause data corruption. To avoid data corruption, convert all existing data into characters that the new data code page supports. For conversion instructions, see your vendor database documentation. To evaluate your data and determine whether a full conversion is possible, use the code page utilities codepageutil test_codepage and codepageutil analyze_tables.

In a Rational ClearQuest MultiSite environment, changing the data code page from any non-ASCII value might introduce incorrect data in your oplogs. For best results, remove all replicas, clean the database at the mastering site, scrub the oplogs, and then re-create your replicas.

If you have set the ClearQuest data code page value to NOCHECKING and you want to change the value, data corruption might occur because existing data may no longer be supported by the new data code page. Before you change the data code page value from NOCHECKING, convert all existing data into characters that the new code page supports. For instructions, see your vendor database documentation. To evaluate your data and determine whether a full conversion is possible, use the code page utilities codepageutil test_codepage and codepageutil analyze_tables. For more information about the NOCHECKING option, see installutil setdbcodepagetonochecking.


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