User Guide

Utilities 245
Utilities Reference
103-000153-001
August 29, 2001
Novell Confidential
Manual 99a38 July 17, 2001
Locks Parameters for the Traditional File System
Locks parameters control
 How many open files each workstation can have
 How many open files the system can handle
 How many record locks each connection can have
 How many record locks the system can handle
There are three types of locks:
 File locks secure the file and prevent other stations from accessing it.
 Physical record locks control data access by multiple users. They prevent
other users from accessing or changing a range of bytes (a record) in a
file. They are sometimes referred to as byte-range locks.
Physical record locks are enforced by the system. If a user tries to access
a range of bytes that is physically locked, the user receives an Access
Denied error message.
 Logical record locks also control data access by multiple users. The
application assigns a name to each section of data that needs to be locked.
The application then locks this name whenever it accesses the data.
Logical locks are enforced only to the extent that the application checks
the name each time it needs access to data.
For a description of locks parameters, see the following table.
Table 19 Locks Parameters for the Traditional File System
Parameter Use to
Maximum Record Locks Per
Connection = number
Control how many record locks a client connection can use at one
time. (Use MONITOR to view how many record locks each
connection is using.)
Supported values: 10 to 100000
Default: 500
Increase the value of this parameter when an application can’t
lock enough records and fails.
Decrease the value of this parameter if one or more client
connections are using an excessive amount of server resources.