BEA Tuxedo+ WebLogic编程简介
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2011-04-23
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BEA Tuxedo+ WebLogic 编程简介
BEA TUXEDO+ WEBLOGIC 编程简介........................................................................................1
一、 BEA TUXEDO 简介..............................................................................................................1
二、BEA TUXEDO 配置文件 UBBCONFIG................................................................................3
三、BEA TUXEDO 常见配置错误................................................................................................6
四、BEA TUXEDO 常用命令........................................................................................................7
五、常用 BEA TUXEDO 函数：...................................................................................................9
六、常见错误分析：.................................................................................................................19
一、BEA Tuxedo 简介
关于 UBBCONFIG 文件的一些设置：
The cost incurred by increasing MAXACCESSERS is one additional
semaphore per site per client or server process (accesser—see note that follows). There is
a small fixed semaphore overhead for system processes in addition to
that added by the MAXACCESSERS value. The cost of increasing
MAXSERVERS and MAXSERVICES is a small amount of shared memory
that is kept for each server, service, and client
entry,respectively. The general idea for these parameters is to
allow for future growth of the application. It is more important
to scrutinize MAXACCESSERS.
Note: The system allocates one semaphore for each access slot to
the bulletin board.
A semaphore is a latch circuit that prevents more than one
process from accessing the same shared memory in the bulletin
board at the same time.
For BEA Tuxedo pre-Release 7.1 (6.5 or earlier), both the
MAXACCESSERS and MAXSERVERS parameters for an application play a
part in the user license checking scheme. Specifically, a machine
is not allowed to boot if the number of MAXACCESSERS for that
machine + the number of MAXACCESSERS for the machine (or
machines) already running in the application is greater than the
number of MAXSERVERS + user licenses for the application. Thus,
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