1526 ошибка подключения odbc sql server

Let us examine the error 1526 connectivity error Microsoft ODBC SQL server driver and the reasons causing it and the troubleshoots requires to remove the error. At Bobcares our MSSQL Support services will give you a detailed overview of the error and the troubleshooting steps.

1526 connectivity error Microsoft ODBC SQL server driver

Error 1526 represents the connectivity problem. To find the details you need to use the AERROR() function in the error handler when the error number is 1526. The server’s real error message is located in the second column of the array that it generates.

Connectivity error: “name” (Error 1526)

An ODBC error has occurred. This message is provided by Visual FoxPro as a wrapper for the underlying ODBC error. The ODBC error might be caused by either the ODBC driver management, the ODBC driver, or the back-end data server.

AERROR(В ) returns the ODBC errors. The following codes show the format of an ODBC error 1526 as returned by AERROR(B).

Element number: Error Message.

1: Numeric. Contains 1526. Character.
2: The text of the error message.
3: Character. ODBC error message text.
4: Character. The current ODBC SQL state.
5: Numeric. The ODBC data source's error number
6: Numeric. The ODBC connection handle.
7: The null value

The source of the fault is listed as the final name in the list preceding the actual error text in the ODBC error message (element number 3). Look up the error in the ODBC book (Programmer’s Reference) using the ODBC state code (element number 4).

The data source error is set when there is a server error (element number 5). Look up the error in the server documentation with it.

1526 connectivity error Microsoft ODBC SQL server driver: Errors

Users may encounter one or more of the errors listed below:

Error: General ODBC Error: Communication Link Failure. Native Error 0.
Error: -2147211486 (80042722) Run time error General ODBC error: [Microsoft][ODBC SQL Server driver] Communication Link Failure Native Error 0.
Error: General ODBC Error [Microsoft] [ODBC SQL Server Driver] [DBNETLIB] connectionread (recv()) Native Error 10054.
Error: General ODBC Error [Microsoft] [ODBC SQL Server Driver] General Network Error--check your network documentation--Native Error 11.
Error: Run-Time error '-2147211486 (80042722)': General ODBC Error: [Microsoft] [ODBC SQL Server Driver] Communication link failure Native error:0.
Error: General ODBC Error:Communication Link Failure. Native Error:0 when opening an invoice or vendor record.
Error: General ODBC Error:[Microsoft][ODBC SQL Server Driver][DBNETLIB]ConnectionWrite(send()). Native error:10054. [Microsoft][ODBC SQL Server Driver][DBNETLIB] General network error.Check your network documentation. Native error: 11.

This can occur if any of the following events occur:

• For a few moments, the program has been dormant. Executing a query
• Creating an individual constituent record
• Invoice viewing

Troubleshooting steps for the 1526 connectivity error

We can repeat the following steps until the 1526 connectivity error Microsoft ODBC SQL server driver is resolved:

1. If the SQL Server instance is installed and running on Windows Server or R2 and the errors occur on multiple workstations, consult Microsoft Article 942861.
2. Reboot the workstation.
3. Update/Repair the workstation.
4. Modify the Power Options to prevent the computer from shutting down after prolonged inactivity.

Disable the network card power management feature by doing the following steps:

• Select Properties from the My Computer menu.
• Choose Device Manager.
• To expand the Network adapters tree, click the plus symbol.
• Choose the correct Network Interface Card (NIC) from the list.
• Select Action, and Properties from the menu bar. Select the Power Management tab.
• Remove the check from “Allow the computer for turning off the device to save power.” Then click OK to remove the 1526 connectivity error Microsoft ODBC SQL server driver.

Disable the wifi connection on the problematic computer:

• Open Control Panel.
• Click on Network and Sharing Center
• Click Change Adapter Settings
• Disable the wireless connection by right-clicking it.
• Connect to a wired network.
• Log out and back in.

After this follow the steps given below to continue the Disable the network card power management features:

• Recreate the Windows user profile
• Install the most recent version of the Microsoft Data Access Components (MDAC)
• Use the Microsoft TechNet article The Cable Guy: Network Diagnostics & Tracing in Windows to check for general network issues.
• Give the user the appropriate NTFS Permissions
• Restart the SQL Server service if the problem occurs on many workstations.

  To do this click Start, then type Services.msc and hit Enter. Scroll down to the SQL Server instance. Right-click and select Restart.

Perform a continuous ping on a workstation that is experiencing the problem:

1. Click Start, Select Run
2. Type cmd and press Enter
3. Click OK
4. Enter the command ping -t servername (where servername is the SQL server name)
5. When the error occurs press Ctrl + C

The number of packets lost should be 0. If the number of packets lost exceeds zero, we are having a networking problem and are losing contact with the database server.

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Conclusion

To conclude we have learned more about the error 1526 connectivity error Microsoft ODBC SQL server driver, the reasons causing it, and the Troubleshooting steps required to remove the error with the support of our MSSQL support services at Bobcares.

Hi:

I have an application that will execute an insert statement. When I try to run this morning I’ve encountered this: Error #: [1526]: Connectivity error: [Microsoft][ODBC SQL Server Driver]Associated statement is not prepared. I’m running — ‘Microsoft SQL Server 2005 — 9.00.1399.06 (Intel X86) Oct 14 2005 00:33:37 Copyright (c) 1988-2005 Microsoft Corporation Developer Edition on Windows NT 5.1 (Build 2600: Service Pack 2)’

Do you have any idea whats the exact explanation of this error? I’ve tried to search at the help file but it won’t give me any correct information.

thanks

Jan

Просто продолжение этого вопроса … с частичным решением.

Я провел трассировку, по сути, их несколько. Я обнаружил, что у этих ошибок может быть несколько причин. Мне удалось найти и исправить одну из них, но мы все еще получаем эту ошибку в других местах, и они не отображаются на трассировках, которые я сделал.

Так в чем же дело с тем, что я нашел? Итак, по трассировке я обнаружил, что эти ошибки ODBC появились после другой ошибки SQL Server:

Error: 1203, Severity: 20, State: 1.
Process ID 94 attempted to unlock a resource it does not own: OBJECT: 25:1699834390:0 . Retry the transaction, because this error may be caused by a timing condition. If the problem persists, contact the database administrator.

Из кода FoxPro я обнаружил, что оператор вставки вызывал эту ошибку … не всегда … но иногда. В этой вставке они вытягивали все поля из одной таблицы, а некоторые поля из другой таблицы — в третью. Каждая таблица в этой базе данных имеет столбец идентификаторов с именем id_col, а оператор select, который заполнял третью таблицу, возвращал два поля id_col.

insert into tablethree 
select a.*, b.price, b.item, id_col 
from tableone a, tabletwo b 
where a.item = ....

Когда мы реструктурировали код так, чтобы возвращался только один id_col … ошибки прекратились.

Честно говоря, есть еще один возможный виновник этой ошибки, которую я исправил в то же время. Прямо перед этим был еще один большой / длинный запрос, который использовал синтаксис Foxpro Rushmore (например, a.item+a.customer = lc_item+lc_customer) в запросе сервера sql. У нас и раньше были проблемы с этим типом вещей, так что это могло быть одной из причин проблемы … но есть свидетельства того, что причиной является дополнительный столбец идентификации.