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PL/SQL / Exceptions

Exception propagation

Learn Exception propagation in PL/SQL through a focused explanation, a dedicated construct-specific example, an engineering boundary, and a mastery check.

10 min read • Intermediate

Exception propagation is an atomic PL/SQL topic inside Exceptions. This lesson focuses on how the Exception propagation construct is written, what it changes, and when it is the right tool.

Trace the example line by line. Identify the exact syntax for Exception propagation, the input state before it runs, and the resulting value, control flow, database state, hardware behavior, or runtime effect afterward. Neighboring lessons use different constructs rather than renamed copies of this one.

Topic-specific example

plsql-04-07-exception-propagation.sql
plsql Try It Live 
DECLARE PROCEDURE inner_p IS BEGIN RAISE VALUE_ERROR; END; BEGIN inner_p; EXCEPTION WHEN VALUE_ERROR THEN DBMS_OUTPUT.PUT_LINE('caught outside'); END; /
Edge case / engineering note

For Exception propagation, test the boundary that belongs to this exact feature rather than a generic failure case. Check invalid or empty input, NULL/unknown state, numeric limits, transaction or exception behavior, synthesis/runtime constraints, ownership/permission rules, or backtracking/control-flow effects where they apply.

Content source & attribution
Original Syntaxis Content · Original Syntaxis Content

Lesson quizzes

Exception propagation Mastery Check →
← PREVIOUS
SQLCODE and SQLERRM
NEXT →
PRAGMA EXCEPTION_INIT