3083259 - Indexserver is staying in Initializing phase

The status of indexserver is "Initializing":

hdbindexserver, HDB Indexserver-<SID>, YELLOW, Initializing, 2021 06 30 14:12:42, 0:54:36, 205173

The part of indexserver trace is as follows:

"
[209643] {-1}[-1/-1] 2021-06-30 14:13:16.390063 1 PMRestart VirtualFileStatsProxy.cpp (00428) : LOB owner statistics initialized from MidSizeLob: 483 CD entries in 5.69 msec
[211680] {-1}[-1/-1] 2021-06-30 14:13:16.533920 1 PBPMRestart VirtualFileStatsProxy.cpp(00282) : VirtualFile statistics initialized: 3/3 CD entries in 149.57 msec
[205314] {-1}[-1/-1] 2021-06-30 14:13:18.338152 1 ContainerDirecto ContainerNameDirectorylimpl.cpp(01467) : ContainerNameDirectory loaded 138795/138795 in 1.95 sec
[212348] {4-1} [-1/-1] 2021-06-30 14:14:19.721287 1 PMRestart VirtualFileStatsProxy.cpp(00352) : LOB owner statistics initialized from VirtualFile: 39921042 CD entries in 1.06 min
[205314] {-1}[-1/-1] 2021-06-30 14:14:19.721427 i PMRestart PersistenceSessionRegistry.cpp(00334) : Initialized transient structures in 63 seconds;
[205314] {-1}[-1/-1] 2021-06-30 14:14:19.721436 1 PMRestart PersistenceSessionRegistry.cpp(00336) : Start loading open sessions and history cleanup files
[205314] {-1}[-1/-1] 2021-06-30 14:14:21.184311 1 PMRestart PersistenceSessionRegistry.cpp(00824) : UndoFiles: 0, freeUndoFiles: 4577, CleanupFiles: 0O, CleanupFilesPassedToGc: 0, lcCleanupFilesPassedToGc: 0, LC UndoFiles: 0, LC CleanupFiles: 0, RemoteOpUndoFiles: 0
"

PMRestart VirtualFileStatsProxy.cpp, PBPMRestart VirtualFileStatsProxy.cpp, ContainerDirecto ContainerNameDirectorylimpl.cpp,
PMRestart PersistenceSessionRegistry.cpp, LOB owner statistics initialized from MidSizeLob, VirtualFile statistics initialized , KBA , HAN-DB , SAP HANA Database , Problem