在使用atomikos 事务管理中，当并发数超过50的时候会产生异常如下：
java.lang.IllegalStateException:Max number of active transactions reched:50
java.lang.IllegalStateException:Max number of active transactions reched:50
原因：
atomikos的默认配置中 transactions.properties中：
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# SAMPLE PROPERTIES FILE FOR THE TRANSACTION SERVICE
# THIS FILE ILLUSTRATES THE DIFFERENT SETTINGS FOR THE TRANSACTION MANAGER
# UNCOMMENT THE ASSIGNMENTS TO OVERRIDE DEFAULT VALUES;
# Required: factory implementation
class
of the transaction core.
# NOTE: there is no
default
for
this
, so it MUST be specified!
#
com.atomikos.icatch.service=com.atomikos.icatch.standalone.UserTransactionServiceFactory
# Set base name of file where messages are output
# (also known as the
'console file'
).
#
# com.atomikos.icatch.console_file_name = tm.out
# Size limit (in bytes)
for
the console file;
# negative means unlimited.
#
# com.atomikos.icatch.console_file_limit=-
1
# For size-limited console files,
this
option
# specifies a number of rotating files to
# maintain.
#
# com.atomikos.icatch.console_file_count=
1
# Set the number of log writes between checkpoints
#
# com.atomikos.icatch.checkpoint_interval=
500
# Set output directory where console file and other files are to be put
# make sure
this
directory exists!
#
# com.atomikos.icatch.output_dir = ./
# Set directory of log files; make sure
this
directory exists!
#
# com.atomikos.icatch.log_base_dir = ./
# Set base name of log file
#
this
name will be used as the first part of
# the system-generated log file name
#
# com.atomikos.icatch.log_base_name = tmlog
# Set the max number of active local transactions
# or -
1
for
unlimited.
#
# com.atomikos.icatch.max_actives =
50
（原因）
# Set the
default
timeout (in milliseconds)
for
local transactions
#
# com.atomikos.icatch.default_jta_timeout =
10000
# Set the max timeout (in milliseconds)
for
local transactions
#
# com.atomikos.icatch.max_timeout =
300000
# The globally unique name of
this
transaction manager process
# override
this
value with a globally unique name
#
# com.atomikos.icatch.tm_unique_name = tm
# Do we want to use parallel subtransactions? JTA's
default
# is NO
for
J2EE compatibility
#
# com.atomikos.icatch.serial_jta_transactions=
true
# If you want to
do
explicit resource registration then
# you need to set
this
value to
false
.
#
# com.atomikos.icatch.automatic_resource_registration=
true
# Set
this
to WARN, INFO or DEBUG to control the granularity
# of output to the console file.
#
# com.atomikos.icatch.console_log_level=WARN
# Do you want transaction logging to be enabled or not?
# If set to
false
, then no logging overhead will be done
# at the risk of losing data after restart or crash.
#
# com.atomikos.icatch.enable_logging=
true
# Should two-phase commit be done in (multi-)threaded mode or not?
# Set
this
to
false
if
you want commits to be ordered according
# to the order in which resources are added to the transaction.
#
# NOTE: threads are reused on JDK
1.5
or higher.
# For JDK
1.4
, thread reuse is enabled as soon as the
# concurrent backport is in the classpath - see
# http:
//mirrors.ibiblio.org/pub/mirrors/maven2/backport-util-concurrent/backport-util-concurrent/
#
# com.atomikos.icatch.threaded_2pc=
false
# Should shutdown of the VM trigger shutdown of the transaction core too?
#
# com.atomikos.icatch.force_shutdown_on_vm_exit=
false
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修改默认配置中的：
|
1
|
com.atomikos.icatch.max_actives =
50
------改为更大就可以解决
|
本文转自yunlielai51CTO博客，原文链接：http://blog.51cto.com/4925054/2067855
，如需转载请自行联系原作者
