Answer / guest

Cause: A subquery was used in an inappropriate context, such
as: if (SELECT deptno FROM emp WHERE ... ) = 20 then ...
Subqueries are allowed only in SQL statements.

Action: The same result can be obtained by using a temporary
variable, as in: SELECT deptno INTO temp_var FROM emp WHERE
...; IF temp_var = 20 THEN ...

Please add more information about this Error

ORA-33454: (ESDREAD07) Discarding compiled code for workspace object because number is now string workspace object, whereas it was string workspace object when the code was compiled.

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ORA-31028: Resource metadata length string exceeded maximum length string

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ORA-14125: REVERSE/NOREVERSE may not be specified in this context

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ORA-00208: number of controlfile names exceeds limit of string

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DRG-50949: too many SQEs

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NID-00440: Database ID for database string changed to number.

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ORA-01287: file string is from a different database incarnation

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ORA-06781: TLI Driver: error reading negotation string

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ORA-09344: spsig: error signalling thread

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TNS-00112: Failed to find configuration file name

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