3460500 - PersistenceException: Initialization of connection pool failed for USER - AS Java node terminates with exit code 2150

AS Java fails to start.

there will be following error in dev_server :

[...]
F  ********************************************************************************
F  *** ERROR => Java node 'server0' terminated with exit code 2150.
F  ***
F  *** Please see section 'Java program exit codes'
F  *** in SAP Note 1316652 for additional information and trouble shooting advice.
F  ********************************************************************************
F 
F  [Thr 139894930773856] *** LOG => exiting (exitcode 2150, retcode 1).
[...]

and in std_server log file:

[...]
Service [com.sap.security.core.ume.service] start ================= ERROR =================
CSN Component [BC-JAS-SEC-UME], DC Name [sap.com/com.sap.security.core.ume.service]
com.sap.engine.frame.ServiceException: Start of UME service failed. Check help topic "Start of UME Service Failed". Technical details: Initialization of connection pool failed for USER
poolname <host>:<port>_USER
[EXCEPTION: no connection to any server possible]
[...]
Caused by: com.sap.security.core.persistence.datasource.PersistenceException: Initialization of connection pool failed for USER
    poolname <host>:<port>_USER
    [EXCEPTION: no connection to any server possible]
    at com.sap.security.core.persistence.datasource.imp.LDAPConnectionManager.openNewConnectionPool(LDAPConnectionManager.java:1015)
    at com.sap.security.core.persistence.datasource.imp.LDAPConnectionManager.initConnectionPools(LDAPConnectionManager.java:764)
    at com.sap.security.core.persistence.datasource.imp.LDAPConnectionManager.initialize(LDAPConnectionManager.java:97)
    at com.sap.security.core.persistence.datasource.imp.LDAPPersistence.init(LDAPPersistence.java:525)
    ... 15 more

SAP NetWeaver Application Server Java with LDAP as user data source