Change the default error handling to UNDO, THROW in routine or other blocks.

Operating system and syntax UNIX / Windows -undothrow n
Use with Maximum value Minimum value Single-user default Multi-user default
Client Session 2 1 — —
n
A value (either 1 or 2) that specifies whether you want to change the default error-handling to UNDO,THROW for routine-level blocks only, or for other blocks as well.

Set n to 1 to change the default behavior for routine-level blocks only. Routine-level blocks include the main block of an external procedure (.p), internal procedures, user-defined functions, methods of a class, class constructors, property accessors, and ON blocks used as database triggers with CREATE, DELETE, WRITE, or ASSIGN events.

Set n to 2 to change the behavior for REPEAT, FOR, and DO TRANSACTION blocks in addition to all of the routine-level blocks.

Any value other than 1 or 2 will throw an error and terminate the session.

Note: The -undothrow startup parameter has no effect on r-code. Error handling cannot be changed after code is compiled. The -undothrow parameter takes effect only during a compile of .p or .cls source files.

An alternative to the -undothrow startup parameter is to add either ROUTINE-LEVEL ON ERROR UNDO, THROW or BLOCK-LEVEL ON ERROR UNDO, THROW statements to your source files. For more information about these statements, see ABL Reference.