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ABL Reference
Handle Attributes and Methods Reference : SCHEMA-CHANGE attribute
 

SCHEMA-CHANGE attribute

Relaxes the requirement for exclusive access to a database in order to make the following schema changes online:
*Add new sequences.
*Add new tables, as well as any associated fields, indexes, and database triggers (which must be added within the same transaction).
*Add new fields to an existing table. (You cannot define ASSIGN triggers for new fields while the database is online.)
*Add new inactive indexes to an existing table.
Data type: CHARACTER
Access: Readable/Writeable
Applies to: SESSION system handle
Set this attribute to "NEW OBJECTS" to activate this feature; and to the empty string ("") or the Unknown value (?) to deactivate this feature.