ORA-31202: DBMS_LDAP: LDAP client/server error: Sizelimit exceeded

The problem is a parameter of the LDAP Server: MaxPageSize.

On the server:

c:\>ntdsutil.exe
ntdsutil: Ldap policies
ldap policy: connections
server connections: Connect to server ServerName
Binding to ServerName ...
Connected to ServerName using credentials of locally logged on user
server connections: q
ldap policy: Show Values
Policy                          Current(New)

MaxPoolThreads              8
MaxDatagramRecv             1024
MaxReceiveBuffer            10485760
InitRecvTimeout             120
MaxConnections              5000
MaxConnIdleTime             900
MaxActiveQueries            20
MaxPageSize                 1000
MaxQueryDuration            120
MaxTempTableSize            10000
MaxResultSetSize            262144
MaxNotificationPerConn      5
ldap policy: set MaxPageSize to 100000
ldap policy: Commit Changes
ldap policy: Show Values

Policy                          Current(New)

MaxPoolThreads              8
MaxDatagramRecv             1024
MaxReceiveBuffer            10485760
InitRecvTimeout             120
MaxConnections              5000
MaxConnIdleTime             900
MaxActiveQueries            20
MaxPageSize                 100000
MaxQueryDuration            120
MaxTempTableSize            10000
MaxResultSetSize            262144
MaxNotificationPerConn      5

ldap policy: q
ntdsutil: q
Disconnecting from ServerName