3066438 - Connect to database failed, rc=1, rcSQL=10 authentication failed

• Modifications have been made to the hdbuserstore on application server.
• After the adjustment, the SAP application cannot start.
• The user-password can be confirmed to be the correct input, the user can logon normally to HANA Studio.
• Development workprocess trace contains these errors:

C <day> <month>  <D> <HH>:<MM>:<SS>
C  *** ERROR => Connect to database failed, rc=1, rcSQL=10
 [dbhdbsql.cpp 466]
C  SQLCODE    : 10
C  SQLERRTEXT : authentication failed
B  ***LOG BY2=> sql error 10     performing CON [dbsh         1299]
B  ***LOG BY0=> authentication failed [dbsh         1299]
B  ***LOG BY2=> sql error 10     performing CON [dblink       685]
B  ***LOG BY0=> authentication failed [dblink       685]
M  ***LOG R19=> ThDbConnect, db_connect () [thxxtool.c   6020]
M  in_ThErrHandle: 1
M  *** ERROR => ThInit: db_connect (step TH_INIT, thRc ERROR-DB-CONNECT_ERROR, action STOP_WP, level 1) [thxxhead.c   2762]

• trans.log shows the following issues:

4 ETW000 R3trans version <version> (release <release>).

4 ETW000 unicode enabled version
4 ETW000 ===============================================
4 ETW000 
4 ETW000 date&time   : DD.MM.YYY - HH:MM:SS

4 ETW000 control file: <no ctrlfile>
4 ETW000 R3trans was called as follows: R3trans -d
4 ETW000  trace at level 1 opened for a given file pointer
4 ETW000  [     dev trc,00000]  <timestamp>
4 ETW000  [     dev trc,00000]  Loading DB library '<path>' ...
4 ETW000  [     dev trc,00000]  Library '<path>' loaded
4 ETW000  [     dev trc,00000]  Version of '<path>' is "<version>", patchlevel (<patchlevel>)
4 ETW000  [     dev trc,00000]  ...
4 ETW000  [     dev trc,00000]  Load library <path>/dbhdbsqldbcversion.so
4 ETW000  [     dev trc,00000]  SQLDBC Version : <version>
4 ETW000  [     dev trc,00000]  SQLDBC Module  : <path>/libSQLDBCHDB.so
4 ETW000  [     dev trc,00000]  Load library <path>/dbhdbsqldbc203.so
4 ETW000  [     dev trc,00000]  Loading SQLDBC client runtime (pid=<pid>)...
4 ETW000  [     dev trc,00000]  SQLDBC Runtime : libSQLDBCHDB <version>
4 ETW000  [     dev trc,00000]  Try to connect via secure store (DEFAULT) on connection 0 ...
4 ETW000  [     dev trc,00000]  connect property <property>
...
4 ETW000  [     dev trc,00000]  connect property <property>
4 ETW000  [dbhdbsql.cpp,00000]  *** ERROR => Connect to database failed, rc=1, rcSQL=10
4 ETW000  [     dev trc,00000]  SQLCODE    : 10
4 ETW000  [     dev trc,00000]  SQLERRTEXT : authentication failed
4 ETW000  [    dblink  ,00000]  ***LOG BY2=>sql error 10     performing CON
4 ETW000  [    dblink  ,00000]  ***LOG BY0=>authentication failed
2EETW169 no connect possible: "DBMS = HDB

• SAP Hana Platform Edition 1.0
• SAP Hana Platform Edition 2.0

hana 1.0, hana 2.0, hdbuserstore, hdbuserstore key, Connect to database failed, rc=1, rcSQL=10, authentication failed , KBA , BC-DB-HDB-POR , Dictionary & Consistency checks for SAP HANA , Problem