PLS-00108: declarative units must be a single variable
declaration
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Answer / guest
Cause: While checking a declarative unit (a top-level
declare block without the BEGIN...END), PL/SQL found that
there was more than one item declared or that the item was
not a variable declaration. A table is a common variable
declaration at the unit level. To define a TABLE, compile a
DECLARE compilation unit, but only one at a time is allowed.
Action: Declare variables in separate declarative units.
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