[Middlegen-user] error java.lang.OutOfMemoryError for Running weblogic.ejbc

[qiang]

Hi guys,
I'm trying to use middlegen to generate my ejb jar.My database is sqlserver,Application
server is weblogic7. Database has 42 tables. It's all right for generating entity bean,
generating interface, generating ejb jar.But at last when running weblogic.ejbc ,
It runs for some time and then throws a java.lang.OutOfMemoryError.
My computer's CPU is Pentium IV 2.4G,Memmery is 256M.I increase the JVM heap,
and it just takes longer.Show same error.


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[Eivind Waaler]

Hi, I've had that same problem with a database with around 100
tables. There are two different things I've tried, that at least got the
process a bit further (before I switched to JBoss - no problems of
course..!):

1. Allocate more memory to ant:

set ANT_OPTS=3D-mx640m

2. Try splitting the build in several tasks (call tasks one by one, you
might have to add the ejbdoclet.skip property in build.xml):

ant middlegen
ant -Dmiddlegen.skip=3Dtrue ejbdoclet
ant -Dmiddlegen.skip=3Dtrue -Dejbdoclet.skip=3Dtrue ear

Seems to me this is really a problem with ejbc not handling large number
of beans. You might want to check with bea about it. Let us know if you
figure out.

=2Eeivind

Post by qiang
Hi guys,
I'm trying to use middlegen to generate my ejb jar.My database is sqlse=

rver,Application=20

Post by qiang
server is weblogic7. Database has 42 tables. It's all right for generat=

ing entity bean,=20

Post by qiang
generating interface, generating ejb jar.But at last when running weblo=

gic.ejbc ,

Post by qiang
It runs for some time and then throws a java.lang.OutOfMemoryError.=20
My computer's CPU is Pentium IV 2.4G,Memmery is 256M.I increase the JV=

M heap,=20

Post by qiang
and it just takes longer.Show same error.
=20
=20
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=BF=A1=C4=D0=C3=C0=C5=AE=B5=C4=BC=A4=C7=E9=BD=BB=D3=D1=C0=D6=D4=B0=20

Post by qiang
http://y.21cn.com=20
=C8=AB=C7=F2=BB=AA=D3=EF=C1=E5=C9=F9=C1=F7=D0=D0=B0=F1=20
http://sms.21cn.com/ring=20
=B9=BA=C2=F2=D3=CA=CF=E4=A3=AC=B6=CC=D0=C5=A1=A2=D3=CE=CF=B7=A1=A2=BF=ED=

=B4=F8=B5=E7=D3=B0=C3=E2=B7=D1=CF=ED=20

Post by qiang
http://mail.21cn.com/huodong/0304/wlxs=20
=C3=DC=C2=EB=B1=A3=BB=A4=C6=F7=A3=AC=C1=EE=D3=CA=CF=E4=B8=FC=B0=B2=C8=AB=

=20

Post by qiang
http://mail.21cn.com/bijiao/15.html=20
=20
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=20
=20
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=20

[qiang]

Thank you for your reply.

I try to use your sulution,But it doesn't work.Show same error. Now,I use weblogic.ejbc to resolve this problem directly.It's ok. First add weblogic.jar to classpath ,My command is "java weblogic.ejbc -J-mx640m standard-ecredit-ejb.jar ecredit-ejb.jar".I feel these two sulutions are similar.But result is diffrent.Could you give me some details of your sulution.
----------------------------------------------
Óµ±§ÀËÂþ£¬³¢ÊÔŒ€Ç飬ŒÓÈë¿¡ÄÐÃÀÅ®µÄŒ€Ç霻ÓÑÀÖÔ°
http://y.21cn.com
È«Çò»ªÓïÁåÉùÁ÷Ðаñ
http://sms.21cn.com/ring
¹ºÂòÓÊÏ䣬¶ÌÐÅ¡¢ÓÎÏ·¡¢¿íŽøµçÓ°Ãâ·ÑÏí
http://mail.21cn.com/huodong/0304/wlxs
ÃÜÂë±£»€Æ÷£¬ÁîÓÊÏäžü°²È«
http://mail.21cn.com/bijiao/15.html

[Eivind Waaler]

I don't really have a working solution for this. I've switched to JBoss
which verifies and deploys the beans in a fraction of the time Weblogic
uses :-)

Check with BEA why you get that error. Seems to be a common problem:
http://tinyurl.com/e4fh

Regards
=2Eeivind

Post by qiang
Thank you for your reply.
=20
I try to use your sulution,But it doesn't work.Show same error. Now,I use=

weblogic.ejbc to resolve this problem directly.It's ok. First add weblogic=
=2Ejar to classpath ,My command is "java weblogic.ejbc -J-mx640m standard-e=
credit-ejb.jar ecredit-ejb.jar".I feel these two sulutions are similar.But =
result is diffrent.Could you give me some details of your sulution.

Post by qiang
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=D3=B5=B1=A7=C0=CB=C2=FE=A3=AC=B3=A2=CA=D4=BC=A4=C7=E9=A3=AC=BC=D3=C8=EB=

=BF=A1=C4=D0=C3=C0=C5=AE=B5=C4=BC=A4=C7=E9=BD=BB=D3=D1=C0=D6=D4=B0=20

Post by qiang
http://y.21cn.com=20
=C8=AB=C7=F2=BB=AA=D3=EF=C1=E5=C9=F9=C1=F7=D0=D0=B0=F1=20
http://sms.21cn.com/ring=20
=B9=BA=C2=F2=D3=CA=CF=E4=A3=AC=B6=CC=D0=C5=A1=A2=D3=CE=CF=B7=A1=A2=BF=ED=

=B4=F8=B5=E7=D3=B0=C3=E2=B7=D1=CF=ED=20

Post by qiang
http://mail.21cn.com/huodong/0304/wlxs=20
=C3=DC=C2=EB=B1=A3=BB=A4=C6=F7=A3=AC=C1=EE=D3=CA=CF=E4=B8=FC=B0=B2=C8=AB=

=20

Post by qiang
http://mail.21cn.com/bijiao/15.html=20
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=20

[Frank Morjan]

Hi !

Post by qiang
I'm trying to use middlegen to generate my ejb jar.My database is sqlserver,Application
server is weblogic7. Database has 42 tables. It's all right for generating entity bean,
generating interface, generating ejb jar.But at last when running weblogic.ejbc ,
It runs for some time and then throws a java.lang.OutOfMemoryError.
My computer's CPU is Pentium IV 2.4G,Memmery is 256M.I increase the JVM heap,
and it just takes longer.Show same error.

the problem is the ant task in config/ejb/weblogic.xml
You must add the parameter "maxmemory" to the call of "java":

<java
classname="weblogic.ejbc"
fork="yes"
failonerror="true"
classpath="${weblogic.jar};${env.JAVA_HOME}/lib/tools.jar"
maxmemory="256m"
I hope this helps,

Frank

[Eivind Waaler]

Great! I've been having this same problem too when operating on a large
set of tables..

.eivind

Post by qiang
Hi !

Post by qiang
I'm trying to use middlegen to generate my ejb jar.My database is

sqlserver,Application

Post by qiang
server is weblogic7. Database has 42 tables. It's all right for

generating entity bean,

Post by qiang
generating interface, generating ejb jar.But at last when running

weblogic.ejbc ,

Post by qiang
It runs for some time and then throws a java.lang.OutOfMemoryError.
My computer's CPU is Pentium IV 2.4G,Memmery is 256M.I increase the JVM

heap,

Post by qiang
and it just takes longer.Show same error.

the problem is the ant task in config/ejb/weblogic.xml
<java
classname="weblogic.ejbc"
fork="yes"
failonerror="true"
classpath="${weblogic.jar};${env.JAVA_HOME}/lib/tools.jar"
maxmemory="256m"
I hope this helps,
Frank
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