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https://issues.apache.org/jira/browse/DERBY-7043?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16832859#comment-16832859
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Bryan Pendleton commented on DERBY-7043:
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Thanks for the updates Rick. I'm glad you got it resolved.
> DROP SCHEMA results in ERROR XSAI2
> ----------------------------------
>
> Key: DERBY-7043
> URL: https://issues.apache.org/jira/browse/DERBY-7043
> Project: Derby
> Issue Type: Bug
> Components: SQL
> Affects Versions: 10.8.2.2
> Environment: OS/400
> Reporter: Rick Cook
> Priority: Minor
>
> DROP SCHEMA schemaname RESTRICT results in:
> *{color:#d04437}ERROR XSAI2: The conglomerate (1,024) requested does not
> exist.{color}*
> Prior to DROP SCHEMA, I did drop all tables in that schema.
> I realize that 1,024 conglomerate number translates into c400.dat file in
> Derby seq0 directory, and that c400.dat file is indeed missing, and I neither
> know why nor for how long.
> I ran consistency checks on database using SQL commands from
> [https://wiki.apache.org/db-derby/DatabaseConsistencyCheck] to find the bad
> table(s):
> *{color:#14892c}I isolated the 1,024 conglomerate error to the
> SYS.SYSSEQUENCES table.{color}*
> And I used the following SQL to identify the conglomerate name:
> {color:#654982}*SYSSEQUENCES_HEAP*{color}
> SELECT C.CONGLOMERATENUMBER, C.CONGLOMERATENAME, S.SCHEMANAME FROM
> SYS.SYSCONGLOMERATES C, sys.sysschemas s WHERE CONGLOMERATENUMBER = 1024 AND
> s.schemaid = C.schemaid
> In fact, I cannot even SQL SELECT on SYS.SYSSEQUENCES table without getting
> the same conglomerate error as the DROP SCHEMA schemaname RESTRICT command.
> In other words, I cannot DROP SCHEMA schemaname RESTRICT until
> SYS.SYSSEQUENCES corruption is resolved.
> I was wondering if anyone knew how to resolve this easily with either SQL
> command(s) or any UNIX style java commands.
> P.S. Keep in mind, that I am not an IJ expert, as I have been using a simple
> front-end Derby tool created by our manufacturer to run SQL statements on
> Derby DB, without all the complexity of using IJ and setting up IJ with
> environment variables, classpaths, etc.
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