尝试使用带有union运算符或子选择的RoS（只读待机）在HADR数据库中执行某些查询，我收到错误SQL1773N原因码5。
是什么原因？它们是不产生写入的操作。
联盟
with hist(start_time, operationtype) as (
select start_time, operationtype
from sysibmadm.db_history
where operation = 'B' )
select 'delta', timestampdiff(8, current timestamp - char(timestamp(max(start_time))))
from hist
where operationtype = 'D' or operationtype = 'E'
union all
select 'delta', timestampdiff(8, current timestamp - char(timestamp(max(start_time))))
from hist
where operationtype = 'I' or operationtype = 'O'
子选择
with hist(start_time, operationtype) as (
select start_time, operationtype
from sysibmadm.db_history
where operation = 'B' )
select 'delta', operationtype, start_time, timestampdiff(8, current timestamp - char(timestamp(start_time)))
from hist
where start_time = (
select max(start_time)
from hist
where operationtype = 'D' or operationtype = 'E')
答案 0 :(得分：2)
这似乎是newBalance特有的问题
在启用了ROS的待机状态下尝试了以下//calculates balance
public float calculateBalance()
{
balance = previousBalance + currentPurchases - payments - creditsReturns + lateFees+ 5;
return balance;
}
//sets finance charge
public void setFinanceCharge(float financeCharge)
{
double periodicRate;
periodicRate = .12/12;
float d = (float)periodicRate;
financeCharge = balance * d;
}
//gets finance charge
public float getFinanceCharge()
{
return financeCharge;
}
//Method to calculate new balance
public float calculateNewBalance()
{
//calculate the new balance
newBalance = balance+financeCharge+5;
return newBalance;
}
//setes new payment due
public void setpaymentDue(double newPayment)
{
newPayment = newBalance * .10;
this.paymentDue = (float)newPayment;
}
//gets new payment due
public float getpaymentDue()
{
return paymentDue;
}
//method to display results
public void displayOutput()
{
if (overCreditLimit == 0)
{
JOptionPane.showMessageDialog(null,
"The Customer number is: " + customerNumber + "\n" +
"The Customer name is: " + customerName + "\n" +
"The Credit Limit is: " + creditLimit + "\n" +
"The Previous Balance is: " + previousBalance + "\n" +
"The Current Purchases is: " + currentPurchases + "\n" +
"The Payments is: " + payments + "\n" +
"The Credits/Returns is: " + creditsReturns + "\n" +
"The Late Fees is: " + lateFees + "\n" +
"The Finance Charge is: " + financeCharge + "\n" +
"The New Balance is: " + newBalance + "\n" +
"The New Payment Due is: " + paymentDue + "\n");
}
else
{
overCreditAmount = newBalance - creditLimit - 25;
JOptionPane.showMessageDialog(null, "You are " + overCreditAmount + " dollars over your credit limit,"
+ " a $25 fee has been charged to your new balance");
JOptionPane.showMessageDialog(null,
"The Customer number is: " + customerNumber + "\n" +
"The Customer name is: " + customerName + "\n" +
"The Credit Limit is: " + creditLimit + "\n" +
"The Previous Balance is: " + previousBalance + "\n" +
"The Current Purchases is: " + currentPurchases + "\n" +
"The Payments is: " + payments + "\n" +
"The Credits/Returns is: " + creditsReturns + "\n" +
"The Late Fees is: " + lateFees + "\n" +
"The Finance Charge is: " + financeCharge + "\n" +
"The Amount over Credit Limit is: " + overCreditAmount + "\n" +
"The New Balance is: " + newBalance + "\n" +
"The New Payment Due is: " + paymentDue + "\n");
}
}
和sysibmadm.db_history，两者都运行良好
union all