ORA-04021: timeout occurred while waiting to lock object during truncate table or alter table

Hi, Sometimes you can get ” ORA-04021: timeout occurred while waiting to lock object  ” during truncate table or alter

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Oracle SQL Tutorials Chapter 7 ( Part 2 of 2 )

CREATING TABLE WITH SUB-QUERIES With this method, table is created automatically with the column types that result from a query.

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