При валидации теряется коннект к БД

FB 2.5.6.27020 CS
БД в первом диалекте.

Из IBE запустили Database Validation с параметрами "Validate Full"

В конце возникла ошибка:

Unsuccessful execution caused by system error that does not preclude successful execution of subsequent statements.
connection lost to database.
IBE: Validation completed.

В логе сервера следующее:

SERV	Wed Aug 31 13:11:36 2016
	Database: D:\DB\DATA.FDB
	Index 1 misses node on page 459721 level 1 in table DOCUMENTS (199)


SERV	Wed Aug 31 13:11:36 2016
	Database: D:\DB\DATA.FDB
	Index 1 misses node on page 459721 level 1 in table DOCUMENTS (199)


SERV	Wed Aug 31 13:11:36 2016
	Database: D:\DB\DATA.FDB
	Index 1 has inconsistent left sibling pointer, page 459721 level 1 in table DOCUMENTS (199)


SERV	Wed Aug 31 13:11:36 2016
	Database: D:\DB\DATA.FDB
	Index 1 misses node on page 462635 level 1 in table DOCUMENTS (199)


SERV	Wed Aug 31 13:11:36 2016
	Database: D:\DB\DATA.FDB
	Index 1 has inconsistent left sibling pointer, page 462635 level 1 in table DOCUMENTS (199)


SERV	Wed Aug 31 13:11:36 2016
	Database: D:\DB\DATA.FDB
	Index 1 has orphan child page at page 462635 in table DOCUMENTS (199)


SERV	Wed Aug 31 13:11:36 2016
	Database: D:\DB\DATA.FDB
	Index 1 is corrupt on page 459720 level 0 at offset 5363. File: ..\..\..\src\jrd\validation.cpp, line: 2181
	 in table DOCUMENTS (199)


DBSERV (Client)	Wed Aug 31 13:11:37 2016
	XNET error: Server shutdown detected

Это нормально, что при таких ошибках индекса рвется коннект?

С уважением, Polesov.