833

Product

Name

Event ID

833

Event Source

MSSQLSERVER

Component

SQLEngine

Symbolic

Name

BUF_LONG_IO

Message

Text

has encountered %d occurrence(s) of I/O requests taking longer than %d

seconds to complete on file [%ls] in database. The OS file handle is 0x%p. The

offset of the latest long I/O is: %#016I64x.

This message indicates that SQL Server has issued a read or write request from disk, and that

the request has taken longer than 15 seconds to return. The SQL Server reports this error and

indicates a problem with the I/O subsystem. A database management system (DBMS), such as

, relies on the timeliness of file input and output (I/O) operations. Any one of the

following items may cause stuck or stalled I/O operations and adversely affect SQL Server

responsiveness and performance:

Faulty hardware

Incorrectly configured hardware

Firmware settings

Filter drivers

Compression

Bugs

Other conditions in the I/O path

ﾉ

Expand table

[%ls] (%d)