Oracle 5.0, Reference Manual

Page: 502 / 3232

Server System Variables
482
The path name of the plugin directory. This variable was added in MySQL 5.0.67. If the value is
nonempty, user-defined function object files must be located in this directory. If the value is empty,
the behavior that is used before 5.0.67 applies: The UDF object files must be located in a directory
that is searched by your system's dynamic linker.
If the plugin directory is writable by the server, it may be possible for a user to write executable code
to a file in the directory using
SELECT ... INTO DUMPFILE
. This can be prevented by making
plugin_dir
[481] read only to the server or by setting
--secure-file-priv
[419] to a
directory where
SELECT
writes can be made safely.
•
port
[482]
Command-Line Format
--port=#
-P
Option-File Format
port
Option Sets Variable Yes,
port
[482]
Variable Name
port
Variable Scope Global
Dynamic Variable No
Permitted Values
Type
numeric
Default
3306
Range
0 .. 65535
The number of the port on which the server listens for TCP/IP connections. This variable can be set
with the
--port
[417] option.
•
preload_buffer_size
[482]
Command-Line Format
--preload_buffer_size=#
Option-File Format
preload_buffer_size
Option Sets Variable Yes,
preload_buffer_size
[482]
Variable Name
preload_buffer_size
Variable Scope Global, Session
Dynamic Variable Yes
Permitted Values
Type
numeric
Default
32768
Range
1024 .. 1073741824
The size of the buffer that is allocated when preloading indexes.
•
prepared_stmt_count
[482]
Version Introduced 5.0.21
Version Removed 5.0.31
Variable Name
prepared_stmt_count
Variable Scope Global
Dynamic Variable No