GAUSS-03301：cannot lock cluster for backup in presence of %d uncommitted prepared transactions SQLSTATE: 55P03
错误码
错误描述：cannot lock cluster for backup in presence of %d uncommitted prepared transactions SQLSTATE: 55P03
错误原因：存在未提交的prepared transaction时无法锁定集群进行备份。
解决方法：等待prepared transaction提交后，在锁定集群进行备份。
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