Oracle 5.0, Справочное руководство

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OS/2 Notes
187
SEMMNU = SEMMNS
Set the value of
SEMMNU
to equal the value of
SEMMNS
. You could probably set this to 75% of
SEMMNS
, but this is a conservative estimate.
2.20.6. OS/2 Notes
Note
We no longer test builds on OS/2. The notes in this section are provided for
your information but may not work on your system.
MySQL uses quite a few open files. Because of this, you should add something like the following to
your
CONFIG.SYS
file:
SET EMXOPT=-c -n -h1024
If you do not do this, you may encounter the following error:
File ' xxxx ' not found (Errcode: 24)
When using MySQL with OS/2 Warp 3, FixPack 29 or above is required. With OS/2 Warp 4, FixPack
4 or above is required. This is a requirement of the Pthreads library. MySQL must be installed on a
partition with a type that supports long file names, such as HPFS, FAT32, and so on.
The
INSTALL.CMD
script must be run from OS/2's own
CMD.EXE
and may not work with replacement
shells such as
4OS2.EXE
.
The
scripts/mysql-install-db
script has been renamed. It is called
install.cmd
and is a
REXX script, which sets up the default MySQL security settings and creates the WorkPlace Shell icons
for MySQL.
Dynamic module support is compiled in but not fully tested. Dynamic modules should be compiled
using the Pthreads runtime library.
gcc -Zdll -Zmt -Zcrtdll=pthrdrtl -I../include -I../regex -I.. \
-o example udf_example.c -L../lib -lmysqlclient udf_example.def
mv example.dll example.udf
Note
Due to limitations in OS/2, UDF module name stems must not exceed eight
characters. Modules are stored in the
/mysql2/udf
directory; the
safe-
mysqld.cmd
script puts this directory in the
BEGINLIBPATH
environment
variable. When using UDF modules, specified extensions are ignored---it is
assumed to be
.udf
. For example, in Unix, the shared module might be named
example.so
and you would load a function from it like this:
mysql> CREATE FUNCTION metaphon RETURNS STRING SONAME 'example.so';
In OS/2, the module would be named
example.udf
, but you would not specify the module extension:
mysql> CREATE FUNCTION metaphon RETURNS STRING SONAME 'example';
2.21. Environment Variables
This section lists all the environment variables that are used directly or indirectly by MySQL. Most of
these can also be found in other places in this manual.
Note that any options on the command line take precedence over values specified in option files
and environment variables, and values in option files take precedence over values in environment
variables.