事务(进程 ID 98)与另一个进程被死锁在 锁 资源上

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发生时间： 2015-07-08 05:39:48
错误编号： ExecuteBatch
错误信息： 事务(进程 ID 98)与另一个进程被死锁在 锁 资源上，并且已被选作死锁牺牲品。请重新运行该事务。
Sql语句： update t_cre_track set FORPRICE=217.0000000000 where FORENTRYID=164856

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调用堆栈：

Server stack trace:
at Kingdee.BOS.App.Data.Sql.SqlDatabase.ExecuteBatch(List`1 sqlArray, Int32 batchSize, Int32 commandTimeout)
at Kingdee.BOS.App.Data.DBUtils.ExecuteBatch(Context ctx, List`1 sqlArray, Int32 batchSize)
at Kingdee.K3.SCM.App.Credit.Core.AppBusinessService.TrackCredit.CreditTrackBillData.UpdatePrice(List`1 lsttr)
at Kingdee.K3.SCM.App.Credit.Core.AppBusinessService.TrackCredit.CreditTrackBillData.OperationRowList(Boolean saveModel)
at Kingdee.K3.SCM.App.Credit.Core.AppBusinessService.UpdateCreditLinkData.DoActionBatch(AppBusinessServiceArgs e)
at Kingdee.BOS.App.Core.AbstractOprerationService.ExecuteFormBusinessService(IAppFormBusinessService iBusiness, ExtendedDataEntity[] dataEntities, FormBusinessService service)
at Kingdee.BOS.App.Core.AbstractOprerationService.InvokeFormBusiness(DynamicObject[] objs, Int32 iActionPoint)
at Kingdee.BOS.App.Core.AbstractOprerationService.CallOperation(DynamicObject[]& objs)
at Kingdee.BOS.App.Core.AbstractOprerationService.CallOperatinTransaction(DynamicObject[] objs)
at Kingdee.BOS.App.Core.AbstractOprerationService.DoExcete()
at Kingdee.BOS.App.Core.AbstractOprerationService.Excute(DynamicObject[] dataEntities)

被死锁的情况时不时有发生，有时莫名其妙又好了。
请问：
1）一般是什么情况下才会出现它？
2）出现问题后，要怎么去跟踪和处理？