J2EE engine was always down when I accessed it in the web browser!

[xinjiang_li]

Hi,gurus:

Having installed netweaver 7.0 SR3 and made the post-installation of xi with nwa, I accessed the j2ee engine with the URL "http://<hostname>:50100/sld or http://<hostname>:50100/irj".Sometimes the webpage could be accessed,but other times the webpage was blank,and after I refreshed the webpage again,it displayed the error like "503 service unavailable".Then I found the color of disp+work.exe and server0 in MMC was yellow.After several minutes,it turned green again.Then I could access the j2ee engine successfully.However,it stopped again after I accessed some webpages.

This problem has embarassed me several weeks,could you help me?Any help would be appreciated,tks in advance.

I picked up some related message which may be helpful to resolve the problem:

defaultTrace0.trc:

1.Cannot lock configuration;it is already locked.

Caused by :com.sap...LockException:.........J2EE_CONFIGURATION_MANAGER.....it is in use by another owner.The lock collision occurred with user <internal>

2.java.security.keyStoreException: cannot get root keystore view configuration; A configuration with the path "keystore" does not exist.

dev_server0.xml:

1.com.sap.secruity.api.NoSuchRoleException:Role with uniqueName system_admin_role not found!

com.sap.secruity.api.NoSuchRoleException:Role with uniqueName content_admin_role not found! 2.com.sap.security.api.NoSuchGroupException:Group "Administrators" does not exist.

3.password logon no longer possible - too many failed attempts.

[Former Member]

Hello xinjiang li,

When the problem happens again, please get the files dev_server0 and std_server0.out files from the Work directory and post them here.

Best regards,

Rafael Toshiaki

[xinjiang_li]

Hi:

The problem has been solved.There was an error message like "out of memory" In the file std_server0.out,so i change the start parameter of jvm in configuretool and it worked.The parameters are as below:

-XX:PermSize=2048m

-XX:MaxPermSize=2048m

Thanks for your help!

[Former Member]

Hello xinjiang li,

Actually you don't have to increase the parameter regarding Permanent Size to such high value. Unless you have resources remaining. Please take a look at SAP Note 723909 to know what are the values recommended by SAP for each memory parameter. Note: be aware that there are different values for each case, I mean 6.40 and 7.00, 32 and 64-bit.

Hope this helps!

Best regards,

Rafael Toshiaki

[xinjiang_li]

Hi,Rafael :

The note you mentioned is very helpful.It's right about what you said .the paremeter I set was too high.

The note suggests that "For 7.0 on 64 bit: -XX:MaxPermSize=512m -XX:PermSize=512m". I think it will also works.However ,another note suggests the value "-XX:MaxPermSize=256m -XX:PermSize=256m",which is not enough for my jvm.

I appreciate your help.Thanks.

[Former Member]

Hello xinjiang li,

Yes, as far as I know, the value 256m is the default one. But in some cases, it's necessary to increase it to 512m. SAP recommends 512m in 64-bit/7.00 system.

Hope this helps!

Best regards,

Rafael Toshiaki

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