HANA start Indexserver not running

Dear, all :

I started HANA Server , but indexserver was not running.

user: <sid>adm

HDB Start.

StartWait

FAIL: process hdbindexserver HDB Indexserver not running.

Indexserver.trc :

exception 1: no.1000000 (DataAccess/impl/PersistenceManagerImpl.cpp:4305)

unexpected high number of rolling back DTX found 12909 ! ( free stack area of 1020264 bytes is too small); $condition$=maxTIDs <= maxIndoubtElements!