Application unable to connect to databse after some time

The problem we are facing is that after some time the application seems to be unable to connect to the database. The only way we have been able to clear the issue is by re starting the application servers. Below is the information I see in my logs any help would be appreciated, thanks
####<Sep 6, 2007 12:08:24 PM CDT> <Info> <JDBC> <plss1433> <SMART-1433-7025> <ExecuteThread: '22' for queue: 'weblogic.kernel.Defaul
t'> <<anonymous>> <> <BEA-001068> <Connection for pool "SMARTPool" created.>
####<Sep 6, 2007 12:08:24 PM CDT> <Info> <JDBC> <plss1433> <SMART-1433-7025> <ExecuteThread: '22' for queue: 'weblogic.kernel.Defaul
t'> <<anonymous>> <> <BEA-001132> <Initialized statement cache of size "10" for connection in pool "SMARTPool".>
####<Sep 6, 2007 12:08:24 PM CDT> <Info> <Common> <plss1433> <SMART-1433-7025> <ExecuteThread: '22' for queue: 'weblogic.kernel.Defa
ult'> <<anonymous>> <> <BEA-000628> <Created "1" resources for pool "SMARTPool", out of which "1" are available and "0" are unavaila
ble.>
####<Sep 6, 2007 12:08:26 PM CDT> <Info> <JDBC> <plss1433> <SMART-1433-7025> <Thread-7> <<WLS Kernel>> <> <BEA-001128> <Connection f
or pool "SMARTPool" closed.>
####<Sep 6, 2007 12:16:41 PM CDT> <Error> <JDBC> <plss1433> <SMART-1433-7025> <ExecuteThread: '23' for queue: 'weblogic.kernel.Defau
lt'> <<anonymous>> <> <BEA-001131> <Received an exception when closing a cached statement for the pool "SMARTPool": java.sql.SQLExce
ption: Io exception: Broken pipe.>
####<Sep 6, 2007 12:17:14 PM CDT> <Error> <HTTP> <plss1433> <SMART-1433-7025> <ExecuteThread: '22' for queue: 'weblogic.kernel.Defau
lt'> <<WLS Kernel>> <> <BEA-101020> <[ServletContext(id=23265185,name=Smart,context-path=/Smart)] Servlet failed with Exception
java.lang.NullPointerException
at com.spcs.web.smart.dao.MSOBillFileDAO.fetchFileList(MSOBillFileDAO.java:35)
at jsp_servlet._jsp._ma._bfm.__releasearchive._jspService(__releasearchive.java:461)
at weblogic.servlet.jsp.JspBase.service(JspBase.java:33)
at weblogic.servlet.internal.ServletStubImpl$ServletInvocationAction.run(ServletStubImpl.java:1006)
at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:419)
at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:315)
at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:6718)
at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321)
at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:121)
at weblogic.servlet.internal.WebAppServletContext.invokeServlet(WebAppServletContext.java:3764)
at weblogic.servlet.internal.ServletRequestImpl.execute(ServletRequestImpl.java:2644)
at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:219)
at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:178)
I also see this in jdbc.log
SQLException: SQLState(null) vendor code(17002)
java.sql.SQLException: Io exception: Connection timed out
at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:134)
at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:179)
at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:333)
at oracle.jdbc.driver.OracleStatement.doExecuteQuery(OracleStatement.java:2529)
at oracle.jdbc.driver.OracleStatement.doExecuteWithTimeout(OracleStatement.java:2672)
at oracle.jdbc.driver.OraclePreparedStatement.executeUpdate(OraclePreparedStatement.java:589)
at oracle.jdbc.driver.OraclePreparedStatement.executeQuery(OraclePreparedStatement.java:527)
at weblogic.jdbc.wrapper.PreparedStatement.executeQuery(PreparedStatement.java:124)
at com.spcs.web.smart.util.SmartDAO.authenticate(SmartDAO.java:381)
at com.spcs.web.smart.servlets.LoginServlet.doPost(LoginServlet.java:36)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:760)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at weblogic.servlet.internal.ServletStubImpl$ServletInvocationAction.run(ServletStubImpl.java:1006)
at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:419)
at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:315)
at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:6718)
at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321)
at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:121)
at weblogic.servlet.internal.WebAppServletContext.invokeServlet(WebAppServletContext.java:3764)
at weblogic.servlet.internal.ServletRequestImpl.execute(ServletRequestImpl.java:2644)
at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:219)
at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:178)

The following fixed this:
http://technet.microsoft.com/en-gb/library/bb932151.aspx
For some reason "sms admins" was no longer even showing in permissions, added it and gave it appropriate permissions (as per article above), including subfolders. After that worked perfectly.
Does anyone have any ideas why a reboot would cause permissions to be lost?

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BC4j/JSP Application not responding after some time - when deployed on 9ias BC4j/JSP

Hi,
We are using BC4j/jsp application on 9ias. The application is not responding
after some time. We have installed 9ias on PIII(384MB RAM). We tried to accesses
with 10 users, and server is not responding to BC4J/JSP application.
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<BLOCKQUOTE><font size="1" face="Verdana, Arial">quote:</font><HR>Is there any mechanism that cleans up these connections (back down to the initial or some other minimum I would guess) or do they hang around until either the app server or database shuts down?<HR></BLOCKQUOTE>
There is currently no mechanism for reducing the connection pool size after a period of high activity. Recently this has been frequently requested and as such will be implemented in the next production release.
<BLOCKQUOTE><font size="1" face="Verdana, Arial">quote:</font><HR>We have verified this in manual testing. However, when the load tool script exits it doesn't seem to release resources. We know this because we keep seeing our database connections go up and up as more tests are run. Further, we also seem to see more than one connection per "virtual user". For example, when I connect 5 users to the app in manual testing, I get 5 connections. But, when we run a test using the tool, we get 395 database sessions for 200 users. We are having a bit of difficulty understanding why the behavior is different.<HR></BLOCKQUOTE>
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Message was edited by:
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Cannot erase authorization. "Unable to erase authorization. Please try after some time." Please help!!

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If due to some reason, you are unable to deauthorize ADE, follow the below steps:
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1. Go-> Go to folder.
Go to folder dialog will appear.
2. Type ~/Library/Application Support/Adobe/Digital Editions
drag the activation.dat file to the trash.
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Now Authorize ADE again.
ADE will be deauthorized now.
Now Authorize ADE again.
Windows:
Choose Start > Run.
In the Open text box, type regedit and then press Enter. The Registry Editor opens.
In the left pane of the Registry Editor, locate the following registry key:
HKEY_CURRENT_USER\Software\Adobe\Adept
Right-click the Adept key and choose Delete.
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Your authorization will be deleted.
ADE will be deauthorized now.
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Hi,
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Application is running with out any issue if it is called continuously.
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Application is accessing 4 oracle databases and the versions are viz., 9.2.0.8,10.2.0.3,10.2.0.4 and 9.2.0.1.
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App Server : tomcat
jdk version: 1.5
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ods.setConnectionCachingEnabled(true);
ods.setLoginTimeout(intLoginTimeout);
propCache.setProperty("MinLimit","5");
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I'm unable to deauthorize my computer. Getting an error message "Unable to erase authorization. Please try again after some time."

ok, please try below steps,
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2. Choose Start > Run.
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4. In the left pane of the Registry Editor, locate the following registry key:
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Hi,
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Hi,
We are using BC4j/jsp application on 9ias. The application is not responding
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