INVALID_GET_DIAGNOSTICS_USAGE error condition

SQLSTATE: 42612

Invalid usage of GET DIAGNOSTICS statement.

MULTIPLE_CALLS

GET DIAGNOSTICS statement can be called only once from the same exception handler.

NOT_IN_EXCEPTION_HANDLER

GET DIAGNOSTICS statement can only be used from within an exception handler.

NOT_IN_ORDER

GET DIAGNOSTICS must be called after all declarations in the compound, but before any other statement in the compound.