出錯的表包含clob字段，但是其它有clob字段的表也有導(dǎo)出成功的
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Problem Explanation:??
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This can be caused by running the script 'catnoqueue.sql' without first dropping all the queue tables in the database.??
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Solution Explanation??
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The script 'catnoqueue.sql' has been run which drops the tables DEF$AQCALL and DEF$AQERROR. The corresponding rows in SYS.EXPACT$ are not dropped. Prior to running 'catnoqueue.sql', check for and drop any existing queue tables. To ascertain the existence of any queue tables, from SQL*Plus issue the following command to list all queue tables:??
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SELECT * FROM dba_queue_tables??
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To drop the queue tables, from SQL*Plus issue the following command: execute dbms_aqadm.drop_queue_table('<queue table name>')??
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Solution Description:??
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If 'catnoqueue.sql' has already been run, then you need to delete from SYS.EXPACT$ rows for non-existent queue tables. The following steps will allow a full export to run successfully:??
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All rows from the SYS.EXPACT$ table for the function package DBMS_AQ_IMPORT_INTERNAL need to be deleted.??
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1. Login into Server Manager as INTERNAL or SYS; or, login into SQL*Plus as SYS??
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2. Enter the following SQL command:??
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DELETE FROM SYS.EXPACT$??
WHERE FUNC_PACKAGE = 'DBMS_AQ_IMPORT_INTERNAL';??
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After the statement issue a 'commit' so the statement can take effect.??
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3. Exit Server Manager or SQL*Plus.??
4. Now you should be able to do a full database export.
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