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.

Please add more information about this Error

PLW-05001: previous use of 'string' (at line string) conflicts with this use

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PLS-00228: Illegal declaration of variable of type LONG

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NNO-00118: line string: data length string exceeds maximum of string, data ignored

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TNS-12171: TNS:could not resolve connect identifier: string

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