Question: How does the PL/SQL show errors
Answer: When you run
PL/SQL the code is interpreted at runtime, and you may see these
types of errors:
- Syntax errors: These are indicated
by the "Warning: Procedure created with compilation errors" message.
You can display the error with the "show errors" SQL*Plus command).
- Semantic errors: These are invalid table or column names.
- Run time errors: This is a a non-zero Oracle database
For more details, see my notes on
PL/SQL debugging techniques.
Show errors command
To see PL/SQL interpreter errors, you can use the SQL*Plus "show
errors" command: as seen in the "show errors" example
SQL> create or
replace procedure example_defaults
in number := 5,
3 n_2 in number :=
4 n_3 in number := 7)
:= n_2 + n_3;
created with compilation errors.
SQL> show errors
PLS-00363: expression 'N_1' cannot be used as an assignment target
For enhanced show errors command feedback, you can join into
dba_errors and dba_source and see the feedback lines
in the PL/SQL source code:
set lines 100
text format a100
with err as (
')||text text from (
',position-1,' ')||'^'||text text
type||' '||owner||'.'||name||' line '||line
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