Server subsystem failed. Reason: java.lang.NumberFormatException: null

 OSB  environment am getting below error.

<Oct 20, 2015 12:13:47 PM EDT> <Critical> <WebLogicServer> <BEA-000386> Server subsystem failed. Reason: java.lang.NumberFormatException: null
java.lang.NumberFormatException: null
        at java.lang.Integer.parseInt(Integer.java:454)
        at java.lang.Integer.parseInt(Integer.java:527)
        at weblogic.ldap.EmbeddedLDAP.validateVDEDirectories(EmbeddedLDAP.java:1104)
        at weblogic.ldap.EmbeddedLDAP.start(EmbeddedLDAP.java:242)
        at weblogic.t3.srvr.SubsystemRequest.run(SubsystemRequest.java:64)

        Truncated. see log file for complete stacktrace

To fix below issue , I was rename the replicas.prop as replicas.prop.bak in this location(/opt/domains/osb_domain/servers/osbapp1_sitas/data/ldap/conf)

<Oct 20, 2015 12:13:47 PM EDT> <Critical> <WebLogicServer> <BEA-000386> <Server subsystem failed. Reason: java.lang.NumberFormatException: null
java.lang.NumberFormatException: null
        at java.lang.Integer.parseInt(Integer.java:454)
        at java.lang.Integer.parseInt(Integer.java:527)
        at weblogic.ldap.EmbeddedLDAP.validateVDEDirectories(EmbeddedLDAP.java:1104)
        at weblogic.ldap.EmbeddedLDAP.start(EmbeddedLDAP.java:242)
        at weblogic.t3.srvr.SubsystemRequest.run(SubsystemRequest.java:64)
        Truncated. see log file for complete stacktrace

Later I am trying to restart the server I am getting below error

<Oct 21, 2015 9:42:50 AM EDT> <Critical> <WebLogicServer> <BEA-000386> <Server subsystem failed. Reason: weblogic.security.SecurityInitializationException: The loading of OPSS java security policy provider failed due to exception, see the exception stack trace or the server log file for root cause. If still see no obvious cause, enable the debug flag -Djava.security.debug=jpspolicy to get more information. Error message: JPS-02592: Failed to push ldap config data to libOvd for service instance "idstore.ldap" in JPS context "default", cause: org.xml.sax.SAXException: Error Parsing at line #1: 1.
org.xml.sax.SAXParseException; lineNumber: 1; columnNumber: 1; <Line 1, Column 1>: XML-20108: (Fatal Error) Start of root element expected.
weblogic.security.SecurityInitializationException: The loading of OPSS java security policy provider failed due to exception, see the exception stack trace or the server log file for root cause. If still see no obvious cause, enable the debug flag -Djava.security.debug=jpspolicy to get more information. Error message: JPS-02592: Failed to push ldap config data to libOvd for service instance "idstore.ldap" in JPS context "default", cause: org.xml.sax.SAXException: Error Parsing at line #1: 1.
org.xml.sax.SAXParseException; lineNumber: 1; columnNumber: 1; <Line 1, Column 1>: XML-20108: (Fatal Error) Start of root element expected.
        at weblogic.security.service.CommonSecurityServiceManagerDelegateImpl.loadOPSSPolicy(CommonSecurityServiceManagerDelegateImpl.java:1402)
        at weblogic.security.service.CommonSecurityServiceManagerDelegateImpl.initialize(CommonSecurityServiceManagerDelegateImpl.java:1022)
        at weblogic.security.service.SecurityServiceManager.initialize(SecurityServiceManager.java:873)
        at weblogic.security.SecurityService.start(SecurityService.java:141)
        at weblogic.t3.srvr.SubsystemRequest.run(SubsystemRequest.java:64)
        Truncated. see log file for complete stacktrace
Caused By: oracle.security.jps.JpsRuntimeException: JPS-02592: Failed to push ldap config data to libOvd for service instance "idstore.ldap" in JPS context "default", cause: org.xml.sax.SAXException: Error Parsing at line #1: 1.
org.xml.sax.SAXParseException; lineNumber: 1; columnNumber: 1; <Line 1, Column 1>: XML-20108: (Fatal Error) Start of root element expected.
        at oracle.security.jps.internal.policystore.PolicyDelegationController.<init>(PolicyDelegationController.java:170)
        at oracle.security.jps.internal.policystore.JavaPolicyProvider.<init>(JavaPolicyProvider.java:383)
        at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
        at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
        at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
        Truncated. see log file for complete stacktrace


To fix this issue I rename the adapters.os_xml (/opt/domains/osb_domain/config/fmwconfig/ovd/default) and copy the adapters.os_xml from (/opt/oracle/middleware/oracle_common/modules/oracle.ovd_11.1.1/templates)this location. then restarted the adminserver.