My organization Having 15000 records in Accounts object, can we transfer all the records in one step?

My organization Having 15000 records in Accounts object, can we transfer all the records in one step?

---> Yes, you can achieve this by writing  Apex class. I am giving code for this please go through once you can under stand easily.

Controller:-

global class SendOldRecord

{

        public void sendrec(list<Account> ls)

        {

            //This list declaration for PartnerNetworkrecords

            List<PartnerNetworkRecordConnection> lstShareRecords = new List<PartnerNetworkRecordConnection>();

            //This list declaration for the Connections with this Organization.

            List<PartnerNetworkConnection> connMap=[select Id, ConnectionStatus, ConnectionName from PartnerNetworkConnection

                    where ConnectionStatus = 'Accepted' and ConnectionName='Appshark Software Pvt Ltd'];

            //This for is to loop all the connections

                    for(PartnerNetworkConnection network : connMap)

                    {   

                        for(Account acc:ls)

                        {

                        //object declaration for PartnerNetwork

                        PartnerNetworkRecordConnection newrecord = new PartnerNetworkRecordConnection();

                        system.debug('Second for loop');

                        newrecord.ConnectionId = network.Id;

                        newrecord.LocalRecordId = acc.id; 

                        newrecord.RelatedRecords = 'Contact';

                        newrecord.SendClosedTasks = true;

                        newrecord.SendOpenTasks = true;

                        newrecord.SendEmails = true;

                        //All the Records are added to the PartnerNetwork

                        lstShareRecords.add(newrecord);

                        }

                   }

              system.debug('List\n'+lstShareRecords);

             //These Records are inserted into Partnernetwork

             //using lstShareRecords.

              insert lstShareRecords;

        }

}

in the case of bulk records , we need to handle them in Batch process,for i have implemented following batch class and pass to list of accounts at every run,

Batch Controller:-

global class RecordBatchApex implements Database.Batchable<Account>

{

global list<Account> start(Database.BatchableContext bc)

{      

    list<account> lstAcc = [select Id from Account];

    return lstAcc;

}

global void execute(Database.BatchableContext bc,List<Account> lstAccount)

{       

system.debug('*******************Execute of Batch Apex***********');

system.debug(lstAccount);

sendoldrecord od=new sendoldrecord();

od.sendrec(lstAccount);

}//BatchApex Completes

// execution with this finish method

global void finish(Database.BatchableContext BC)

{system.debug('****Finished*****');

}}

Once run that code even from System log,then you can find all the records in business partner login.