Oracle 5.0 Reference Manual page 493

Variable Scope
Dynamic Variable
The maximum number of simultaneous connections permitted to any given MySQL user account. A
value of 0 (the default) means "no limit."
Before MySQL 5.0.3, this variable has only a global value that can be set at server startup or
runtime. As of MySQL 5.0.3, it also has a read-only session value that indicates the effective
simultaneous-connection limit that applies to the account associated with the current session. The
session value is initialized as follows:
• If the user account has a nonzero
max_user_connections
• Otherwise, the session
Account resource limits are specified using the
Account Resource Limits", and
•
max_write_lock_count
Command-Line Format
Option-File Format
Option Sets Variable
Variable Name
Variable Scope
Dynamic Variable
After this many write locks, permit some pending read lock requests to be processed in between.
•
myisam_data_pointer_size
Command-Line Format
Option-File Format
Server System Variables
Global, Session
Yes
Permitted Values
Type
numeric
Default
0
Range
0 .. 4294967295
MAX_USER_CONNECTIONS
[472] value is set to that limit.
max_user_connections
GRANT
Section 13.7.1.3,
[473]
--max_write_lock_count=#
max_write_lock_count
Yes,
max_write_lock_count
max_write_lock_count
Global
Yes
Permitted Values
Platform
32
Bit Size
Type
numeric
Default
4294967295
Range
1 .. 4294967295
Permitted Values
Platform
64
Bit Size
Type
numeric
Default
18446744073709547520
Range
1 .. 18446744073709547520
[473]
--myisam_data_pointer_size=#
myisam_data_pointer_size
473
resource limit, the session
[472] value is set to the global value.
statement. See Section 6.3.4, "Setting
"GRANT Syntax".
[473]