WLS 10.3.0.0 Solaris SPARC and DBMS Oracle 10gR2 connection pooling issue

Hi all,
we are currently testing Weblogic Server 10.3.0.0 in order to migrate our production system from WLS 8.1 to it.
While testing the new setup, we encountered some strange behaviour of the connection pooling within WLS.
We configured a XA-Connection pool to our DB (Oracle 10gR2) by using
a) the Oracle XA-thin-driver delivered within WLS 10.3.0.0
and alternatively
b) the Oracle 11.2.0.2 OCI-driver of the Oracle 11g database client.
We´ve got the same issue with both variants. We defined an initial capacity of 5 connections and a maximum capacity of 30 connections.
Our application is running flawlessly using the connection pool, but the amount of active sessions between the application server and the database server is increasing rapidly and the maximum capacity is exceeded. We are seeing up to multiple hundreds of sessions from the application server to our database server. Obviously the connections aren´t cleaned up.
We are using the following settings for the JDBC-Connection:
initial capacity = 5
max. capacity = 30
Capacity increment = 1
Statement cache type = LRU
Statement cache size = 10
Test connections on reserve = true
Test frequency = 120
Test table name = "sql select 1 from dual"
seconds to trust an idle pool connection = 10
shrink frequency = 0
connecttion creation retry frequency = 120
login delay = 0
incative connection timeout = 10
max. waiting for connection = 2147483647
connection reserve timeout= = -1
Ignare in-use connections = true
pinned-to-thread = false
remoce infected connections enabled = true
Does anyone have an idea how to track/solve this issue?
Kind regards
Marc

Hi Joe,
we´ve tested with the thin driver using an initial capacity of 5 and a maximum capacity of 15. During our tests (in a very short time period) the maximum capacity has not been exceeded. But we saw some exceptions in the managed server logfile which made us curious.
When these exceptions are occuring, a new connection to the database server is established. We are seeing for a short time a total count of 6 connections which is immediately decreasing to the initial capacity of 5. We will do some further testing over the next hours and monitor the connection usage.
The connection we are dealing with is the one called "ZDB2".
This is an excerpt of the logfile:
####<18.10.2010 19:45 Uhr MESZ> <Debug> <JDBCConn> <SERVER-NAME> <MANAGED SERVER NAME> <[ACTIVE] ExecuteThread: '1' for queue: 'weblogic.kernel.Default (self-tuning)'> <<anonymous>> <BEA1-02F7EA174F1D84653A69> <> <1287423940610> <BEA-000000> <java.lang.Exception: Pinned: autoCommit=true,enabled=true,isXA=true,isJTS=false,vendorID=0,connUsed=true,doInit=false,'null',destroyed=false,poolname=ZDB2,appname=null,moduleName=null,connectTime=177,dirtyIsolationLevel=false,initialIsolationLevel=2,infected=true,lastSuccessfulConnectionUse=1287423940605,secondsToTrustAnIdlePoolConnection=10,currentUser=java.lang.Exception
 at weblogic.jdbc.common.internal.ConnectionEnv.setup(ConnectionEnv.java:308)
 at weblogic.common.resourcepool.ResourcePoolImpl.reserveResource(ResourcePoolImpl.java:314)
 at weblogic.jdbc.common.internal.ConnectionPool.reserve(ConnectionPool.java:427)
 at weblogic.jdbc.common.internal.ConnectionPool.reserve(ConnectionPool.java:316)
 at weblogic.jdbc.common.internal.ConnectionPoolManager.reserve(ConnectionPoolManager.java:93)
 at weblogic.jdbc.common.internal.ConnectionPoolManager.reserve(ConnectionPoolManager.java:61)
 at weblogic.jdbc.jta.DataSource.getXAConnectionFromPool(DataSource.java:1473)
 at weblogic.jdbc.jta.DataSource.refreshXAConnAndEnlist(DataSource.java:1272)
 at weblogic.jdbc.jta.DataSource.getConnection(DataSource.java:425)
 at weblogic.jdbc.jta.DataSource.connect(DataSource.java:382)
 at weblogic.jdbc.common.internal.RmiDataSource.getConnection(RmiDataSource.java:338)
 at org.hibernate.connection.DatasourceConnectionProvider.getConnection(DatasourceConnectionProvider.java:69)
 at org.hibernate.jdbc.ConnectionManager.openConnection(ConnectionManager.java:423)
 at org.hibernate.jdbc.ConnectionManager.getConnection(ConnectionManager.java:144)
 at org.hibernate.jdbc.AbstractBatcher.prepareQueryStatement(AbstractBatcher.java:139)
 at org.hibernate.loader.Loader.prepareQueryStatement(Loader.java:1547)
 at org.hibernate.loader.Loader.doQuery(Loader.java:673)
 at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:236)
 at org.hibernate.loader.Loader.doList(Loader.java:2220)
 at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2104)
 at org.hibernate.loader.Loader.list(Loader.java:2099)
 at org.hibernate.hql.classic.QueryTranslatorImpl.list(QueryTranslatorImpl.java:912)
 at org.hibernate.engine.query.HQLQueryPlan.performList(HQLQueryPlan.java:172)
 at org.hibernate.impl.SessionImpl.list(SessionImpl.java:1121)
 at org.hibernate.impl.QueryImpl.list(QueryImpl.java:79)
 at org.hibernate.impl.AbstractQueryImpl.uniqueResult(AbstractQueryImpl.java:811)
 at APPNAME-ROOT-PATH.components.ordermanagement.biz.OrderPersistenceGenerated.findByPrimaryKey(OrderPersistenceGenerated.java:45)
 at APPNAME-ROOT-PATH.components.ordermanagement.biz.OrderManagementServiceImplStandard.findOrderByPrimaryKey(OrderManagementServiceImplStandard.java:1356)
 at APPNAME-ROOT-PATH.components.ordermanagement.biz.OrderManagementServiceTransactionHandler.findOrderByPrimaryKeyTx(OrderManagementServiceTransactionHandler.java:830)
 at APPNAME-ROOT-PATH.components.ordermanagement.biz.OrderManagementServiceSessionBean.findOrderByPrimaryKey(OrderManagementServiceSessionBean.java:1276)
 at APPNAME-ROOT-PATH.components.ordermanagement.biz.OrderManagementEJB_yb2dzq_ELOImpl.findOrderByPrimaryKey(OrderManagementEJB_yb2dzq_ELOImpl.java:19812)
 at APPNAME-ROOT-PATH.components.ordermanagement.biz.OrderManagementServiceApplicationProxy.findOrderByPrimaryKey(OrderManagementServiceApplicationProxy.java:1289)
 at APPNAME-ROOT-PATH.components.ordermanagement.biz.OrderManagementServiceTransactionHandler.findOrderByPrimaryKey(OrderManagementServiceTransactionHandler.java:823)
 at APPNAME-ROOT-PATH.components.ordermanagement.biz.OrderManagementServiceImplStandard.findOrderByPrimaryKey(OrderManagementServiceImplStandard.java:1341)
 at APPNAME-ROOT-PATH.components.ordermanagement.biz.OrderManagementServiceTransactionHandler.findOrderByPrimaryKeyTx(OrderManagementServiceTransactionHandler.java:816)
 at APPNAME-ROOT-PATH.components.ordermanagement.biz.OrderManagementServiceSessionBean.findOrderByPrimaryKey(OrderManagementServiceSessionBean.java:1255)
 at APPNAME-ROOT-PATH.components.ordermanagement.biz.OrderManagementEJB_yb2dzq_ELOImpl.findOrderByPrimaryKey(OrderManagementEJB_yb2dzq_ELOImpl.java:7332)
 at APPNAME-ROOT-PATH.components.ordermanagement.biz.OrderManagementServiceApplicationProxy.findOrderByPrimaryKey(OrderManagementServiceApplicationProxy.java:1266)
 at APPNAME-ROOT-PATH.components.ordermanagement.biz.OrderManagementServiceTransactionHandler.findOrderByPrimaryKey(OrderManagementServiceTransactionHandler.java:809)
 at APPNAME-ROOT-PATH.components.ordermanagement.biz.OrderManagementServiceImpl.publishOrder(OrderManagementServiceImpl.java:1636)
 at APPNAME-ROOT-PATH.components.ordermanagement.biz.OrderManagementServiceImpl.savePublishedOrder(OrderManagementServiceImpl.java:1606)
 at APPNAME-ROOT-PATH.components.ordermanagement.biz.OrderManagementServiceTransactionHandler.savePublishedOrderTx(OrderManagementServiceTransactionHandler.java:3467)
 at APPNAME-ROOT-PATH.components.ordermanagement.biz.OrderManagementServiceSessionBean.savePublishedOrder(OrderManagementServiceSessionBean.java:5272)
 at APPNAME-ROOT-PATH.components.ordermanagement.biz.OrderManagementEJB_yb2dzq_EOImpl.savePublishedOrder(OrderManagementEJB_yb2dzq_EOImpl.java:3263)
 at APPNAME-ROOT-PATH.components.ordermanagement.biz.OrderManagementEJB_yb2dzq_EOImpl_WLSkel.internalInvoke2(Unknown Source)
 at APPNAME-ROOT-PATH.components.ordermanagement.biz.OrderManagementEJB_yb2dzq_EOImpl_WLSkel.internalInvoke1(Unknown Source)
 at APPNAME-ROOT-PATH.components.ordermanagement.biz.OrderManagementEJB_yb2dzq_EOImpl_WLSkel.invoke(Unknown Source)
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 at weblogic.rmi.cluster.ClusterableServerRef.invoke(ClusterableServerRef.java:230)
 at weblogic.rmi.internal.BasicServerRef$1.run(BasicServerRef.java:477)
 at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:363)
 at weblogic.security.service.SecurityManager.runAs(Unknown Source)
 at weblogic.rmi.internal.BasicServerRef.handleRequest(BasicServerRef.java:473)
 at weblogic.rmi.internal.wls.WLSExecuteRequest.run(WLSExecuteRequest.java:118)
 at weblogic.work.ExecuteThread.execute(ExecuteThread.java:201)
 at weblogic.work.ExecuteThread.run(ExecuteThread.java:173)
,currentThread=Thread[[ACTIVE] ExecuteThread: '1' for queue: 'weblogic.kernel.Default (self-tuning)',5,Pooled Threads],lastUser=null,currentError=null,currentErrorTimestamp=null,JDBC4Runtime=true,supportStatementPoolable=true,needRestoreClientInfo=false,defaultClientInfo={} is set to be refreshed
 at weblogic.jdbc.common.internal.ConnectionEnv.setRefreshNeeded(ConnectionEnv.java:518)
 at weblogic.jdbc.wrapper.Connection.getVendorConnection(Connection.java:292)
 at de.dpcom.persistence.hibernate.BinaryBlobType.nullSafeSet(BinaryBlobType.java:109)
 at org.hibernate.type.CustomType.nullSafeSet(CustomType.java:146)
 at org.hibernate.persister.entity.AbstractEntityPersister.dehydrate(AbstractEntityPersister.java:1997)
 at org.hibernate.persister.entity.AbstractEntityPersister.update(AbstractEntityPersister.java:2371)
 at org.hibernate.persister.entity.AbstractEntityPersister.updateOrInsert(AbstractEntityPersister.java:2307)
 at org.hibernate.persister.entity.AbstractEntityPersister.update(AbstractEntityPersister.java:2607)
 at org.hibernate.action.EntityUpdateAction.execute(EntityUpdateAction.java:92)
 at org.hibernate.engine.ActionQueue.execute(ActionQueue.java:248)
 at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:232)
 at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:140)
 at org.hibernate.event.def.AbstractFlushingEventListener.performExecutions(AbstractFlushingEventListener.java:298)
 at org.hibernate.event.def.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:27)
 at org.hibernate.impl.SessionImpl.flush(SessionImpl.java:1000)
 at APPNAME-ROOT-PATH.components.customermanagement.biz.CertificatePersistenceGenerated.updateCertificate(CertificatePersistenceGenerated.java:116)
 at APPNAME-ROOT-PATH.components.customermanagement.biz.CustomerManagementServiceImplStandard.updateCertificate(CustomerManagementServiceImplStandard.java:1282)
 at APPNAME-ROOT-PATH.components.customermanagement.biz.CustomerManagementServiceTransactionHandler.updateCertificateTx(CustomerManagementServiceTransactionHandler.java:711)
 at APPNAME-ROOT-PATH.components.customermanagement.biz.CustomerManagementServiceSessionBean.updateCertificate(CustomerManagementServiceSessionBean.java:1104)
 at APPNAME-ROOT-PATH.components.customermanagement.biz.CustomerManagementEJB_ap2i9a_ELOImpl.updateCertificate(CustomerManagementEJB_ap2i9a_ELOImpl.java:19199)
 at APPNAME-ROOT-PATH.components.customermanagement.biz.CustomerManagementServiceApplicationProxy.updateCertificate(CustomerManagementServiceApplicationProxy.java:1101)
 at APPNAME-ROOT-PATH.components.productionresultprocessing.biz.ProductionResultProcessingServiceImpl.publishCertificate(ProductionResultProcessingServiceImpl.java:1131)
 at APPNAME-ROOT-PATH.components.productionresultprocessing.biz.ProductionResultProcessingServiceTransactionHandler.publishCertificateTx(ProductionResultProcessingServiceTransactionHandler.java:298)
 at APPNAME-ROOT-PATH.components.productionresultprocessing.biz.ProductionResultProcessingServiceSessionBean.publishCertificate(ProductionResultProcessingServiceSessionBean.java:517)
 at APPNAME-ROOT-PATH.components.productionresultprocessing.biz.ProductionResultProcessingServiceSessionBean_yaua6q_ELOImpl.publishCertificate(ProductionResultProcessingServiceSessionBean_yaua6q_ELOImpl.java:1804)
 at APPNAME-ROOT-PATH.components.productionresultprocessing.biz.ProductionResultProcessingServiceApplicationProxy.publishCertificate(ProductionResultProcessingServiceApplicationProxy.java:471)
 at APPNAME-ROOT-PATH.components.ordermanagement.biz.OrderManagementServiceImpl.publishCertificate(OrderManagementServiceImpl.java:1825)
 at APPNAME-ROOT-PATH.components.ordermanagement.biz.OrderManagementServiceImpl.publishOrder(OrderManagementServiceImpl.java:1664)
 at APPNAME-ROOT-PATH.components.ordermanagement.biz.OrderManagementServiceImpl.savePublishedOrder(OrderManagementServiceImpl.java:1606)
 at APPNAME-ROOT-PATH.components.ordermanagement.biz.OrderManagementServiceTransactionHandler.savePublishedOrderTx(OrderManagementServiceTransactionHandler.java:3467)
 at APPNAME-ROOT-PATH.components.ordermanagement.biz.OrderManagementServiceSessionBean.savePublishedOrder(OrderManagementServiceSessionBean.java:5272)
 at APPNAME-ROOT-PATH.components.ordermanagement.biz.OrderManagementEJB_yb2dzq_EOImpl.savePublishedOrder(OrderManagementEJB_yb2dzq_EOImpl.java:3263)
 at APPNAME-ROOT-PATH.components.ordermanagement.biz.OrderManagementEJB_yb2dzq_EOImpl_WLSkel.internalInvoke2(Unknown Source)
 at APPNAME-ROOT-PATH.components.ordermanagement.biz.OrderManagementEJB_yb2dzq_EOImpl_WLSkel.internalInvoke1(Unknown Source)
 at APPNAME-ROOT-PATH.components.ordermanagement.biz.OrderManagementEJB_yb2dzq_EOImpl_WLSkel.invoke(Unknown Source)
 at weblogic.rmi.internal.BasicServerRef.invoke(BasicServerRef.java:589)
 at weblogic.rmi.cluster.ClusterableServerRef.invoke(ClusterableServerRef.java:230)
 at weblogic.rmi.internal.BasicServerRef$1.run(BasicServerRef.java:477)
 at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:363)
 at weblogic.security.service.SecurityManager.runAs(Unknown Source)
 at weblogic.rmi.internal.BasicServerRef.handleRequest(BasicServerRef.java:473)
 at weblogic.rmi.internal.wls.WLSExecuteRequest.run(WLSExecuteRequest.java:118)
 at weblogic.work.ExecuteThread.execute(ExecuteThread.java:201)
 at weblogic.work.ExecuteThread.run(ExecuteThread.java:173)
>
####<18.10.2010 19:45 Uhr MESZ> <Info> <JDBC> <SERVER-NAME> <MANAGED SERVER NAME> <[ACTIVE] ExecuteThread: '4' for queue: 'weblogic.kernel.Default (self-tuning)'> <<WLS Kernel>> <> <> <1287423940797> <BEA-001072> <Connection for XA pool "ZDB2" created.>
####<18.10.2010 19:45 Uhr MESZ> <Info> <JDBC> <SERVER-NAME> <MANAGED SERVER NAME> <[ACTIVE] ExecuteThread: '4' for queue: 'weblogic.kernel.Default (self-tuning)'> <<WLS Kernel>> <> <> <1287423940808> <BEA-001132> <Initialized statement cache of size "10" for connection in pool "ZDB2".>
####<18.10.2010 19:45 Uhr MESZ> <Info> <Common> <SERVER-NAME> <MANAGED SERVER NAME> <[ACTIVE] ExecuteThread: '4' for queue: 'weblogic.kernel.Default (self-tuning)'> <<WLS Kernel>> <> <> <1287423940808> <BEA-000628> <Created "1" resources for pool "ZDB2", out of which "1" are available and "0" are unavailable.>
Any suggestions?
Kind regards
Marc

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BOOTCATLBA=`od -d $SCRIPTDIR/foo | ${AWK} '{print $2}'`
${ECHO} " Boot Catalog is at LBA $BOOTCATLBA, looking up boot image LBA..."
${DD} if=$CD_DEVICE bs=2048 count=1 skip=$BOOTCATLBA | ${DD} bs=40 skip=1 count=1 | ${DD} conv=swab bs=4 count=1 of=$SCRIPTDIR/foo
BOOTIMGLBA=`od -d $SCRIPTDIR/foo | ${AWK} '{print $2}'`
${ECHO} " Reading Boot Image from LBA $BOOTIMGLBA..."
${DD} if=$CD_DEVICE bs=2048 count=1 skip=$BOOTIMGLBA | ${DD} bs=2048 count=1 of=$IMAGEDIR/$BOOTIMAGE
${RM} -f $SCRIPTDIR/fooWith the above mod, XpReburn generated an image which booted the XP Pro installer and allowed XP to be installed.

MAAL wrote:
have thought about submitting this hint/article to the BigAdmin community ?
http://www.sun.com/bigadmin/common/submittals.html
Michael,
Reading the submission guidelines it appears BigAdmin is for you own work:
By submitting content to the BigAdmin portal, you are attesting that your submission is your own non-confidential property and does not infringe the intellectual property rights of any party.
Whereas my "hint" above is really a bug report / enhancement request for a Sun supplied script.
I only have a basic support plan so don't think I can raise a bug report.
Also:
1) The modification listed was a quick hack to get the script to work under Sparc Solaris, but which would have caused the script to generate a non-bootable ISO if run under X86 Solaris.
2) If you run the script on a ZFS filesystem you get an error that the filesystem isn't local - the script should be updated to consider a ZFS filesystem as local.
3) If the script is run on a Solaris system with two optical drives, the script fails with an error because fails to correctly read the volume name of the XP CD. Can't remember the details, but just hacked the script to work.
So, so for now will just leave the "hint" in this thread.

Windows ODBC Client for Timesten in Solaris Sparc

Hello, i need help to solve this issue :
I have a Timesten version 5.1.28 ( 32 bits) running in Solaris Sparc and a Windows 2003 server connected to the same network.
I need to install a Timesten ODBC client in my windows 2003 server in order to get connection to my timesten database in Solaris.
How can i get a timesten ODBC client for Windows ??
Thanks for your Help
Luis.

Hi Luis,
TimesTen 5.1 is a desupported release. If you are a licensed TimesTen customer, you need to contact the TimesTen Support team to get your issue resolved as the 5.1 release is not available for download from OTN.
To contact the Oracle TimesTen Support team, please open a Metalink case for the TimesTen product, the product number is 1870. This will get routed to the Oracle TimesTen Support engineers.
If you already have the Windows 5.1.28 TimesTen bits, you can do the client only installation.
-scheung

Where do I download Oracle ESB 10.1.3.4 for solaris sparc?

Hi,
Where can I download Oracle SOA Suite ESB 10.1.3.4(only ESB, BPEL is not required).
I could find the following link:
http://www.oracle.com/technology/software/products/ias/htdocs/101310.html
which has Oracle Enterprise Bus 10g (10.1.3.1.0). What is the patch number for upgrading this to 10.1.3.4?
I believe we get latest Oracle Apps and database adapters out of box with ESB 10.1.3.4. If not please suggest me where I can get these.
Also I need an SAP adapter which is not given by default with ESB 10.1.3.4. Please suggest me where I can download this from and how I install it.
Please give me the links for downloading
Oracle SOA ESB
version - 10.1.3.4
Operating system: Solaris Sparc
Adapters: SAP, Oracle Apps and database.
Thanks.

Thanks Marc.
I was not able to find the patch on metalink. Could you please give me the patch number specific to only ESB 10.1.3.4 if you have.
I have the 10.1.3.4 patch number(7272722) for the complete SOA suite.
Also please comment on adapters part.
Thnaks.

Orion download Solaris/SPARC

Just downloaded Orion Users Guide from
http://www.oracle.com/technology/software/tech/orion/index.html
The Users Guide (on page 2) states that the Orion software is available for Linux/x86, Solaris/SPARC and Windows/x86.
However only the following software files are listed on the download page:
     orion_linux_em64t.gz (767,380 bytes)
     orion10.2_linux.gz (630,354 bytes)
     orion10.2_windows.msi (7,865,856 bytes)
Please include a link to the Solaris/SPARC version, if it exists !
-- Peter

You can find the Sparc downloads on the site. The problem is actually getting it to run. I've been trying to run it for some time and it keeps giving me the following error:
Parse error: View help screen using orion -help
although I'm 100% sure that the parameters are right. trussing shows that Orion relies on a lot more than the documentation says. I'm currently downloading Instant Client to try to satisfy the requirements (this wasn't mentioned anywhere by the way). http://www.oracle.com/technology/software/tech/oci/instantclient/htdocs/sol64soft.html
For example, some libraries such as libociei.so, libclntsh.so.10.1 and libociicus.so to name a few.

Migration from Solaris Sparc server to Solaris x86

Hi ,
I would like to know.
Migration from SAP ECC6 , Oracle , Solaris Sparc to Ecc6, Oracle, Solaris x86 , Is this consider Heterogeneous or Homogeneous system copy?
Thanks.
Best Regards,
ck chai

Solaris on SPARC is a BIgEndian platform, Solaris on X86 is LittleEndian - so it's heterogeneous --> you need to use R3load to performa a migration - and you need to have a certified migration consultant on-site to do that migration (http://service.sap.com/osdbmigration --> FAQ).
Markus

Need Pre_requisites to install Solution Manager in Solaries 9 and Oracle 10

Hi Administrators,
In my project, we have planned to implement Solution Manager 7.0 in O/S Solaries 9 and Database Oracle 10.2.
We are implementing this Solution Manager in already existing SAP server.
We have server like TSAPNGN, In this server already our QAS ECC 5.0 and QAS BW 3.5 are exist and running in this server.
I need information like, What is the pre_requisites to install SAP application, where already another SAP exist in Server.
Appreciate ur help.
Thanks & Regards,
Jagan.

Hello
There is no difference whether you are installing the Solution Manager on a separate server or an existing server already containing the DEV system. you will get some idea from these Notes
21960 Several instances/systems on one UNIX computer
28392 Two R/3 Systems on one Windows NT Server
322653 DB6: Two or several systems on a host
I think, you should go for Central System installtion for the Solman, with it's own database.
and what do you mean by 'standalone solman' here ?
Just go 'installation and upgrades' -> My application components -> SAP Solution Manager -> Solman 7.0 or EHp1 -> Installation and upgrades
For installation guide
installation and upgrade guiedes -> SAP components -> SAP Solution manager -> Select solman version

Connection Pooling and JSP Custom Tag Library - is code (inside) the best way/correc?

Hi, can anyone advise as to whether my tag library code (based
on Apache Jakarta Project) will actually achieve connection
pooling functionality across my entire JSP based application? I
am slightly concerned that my OracleConnectionCacheImpl object
may exist multiple times, hence rendering my conection pooling
attempt useless.
package com.solved.tag.dbtags.connection;
import java.io.IOException;
import java.sql.Connection;
import java.sql.SQLException;
import javax.servlet.jsp.tagext.TagSupport;
import javax.servlet.jsp.JspTagException;
import javax.sql.DataSource;
import javax.naming.InitialContext;
import javax.naming.NamingException;
import oracle.jdbc.pool.OracleConnectionCacheImpl;
* JSP tag connection, used to get a
* java.sql.Connection object.
* JSP Tag Lib Descriptor
* <pre>
* <name>connection</name>
<tagclass>com.solved.tag.dbtags.connection.ConnectionTag</t
agclass>
* <bodycontent>JSP</bodycontent>
<teiclass>com.solved.tag.dbtags.connection.ConnectionTEI</t
eiclass>
* <info>Opens a connection based on a jndiName.</info>
* <attribute>
* <name>id</name>
* <required>true</required>
* <rtexprvalue>false</rtexprvalue>
* </attribute>
* </pre>
* @author Matt Shannon
public class ConnectionTag extends TagSupport {
static private OracleConnectionCacheImpl cache = null;
public int doStartTag() throws JspTagException {
try {
Connection conn = null;
if (cache == null) {
try {
InitialContext ic = new InitialContext();
DataSource ds = (DataSource) ic.lookup
("jdbc/pool/OracleCache");
cache = (OracleConnectionCacheImpl)ds;
catch (NamingException ne) {
throw new JspTagException(ne.toString());
conn = cache.getConnection();
pageContext.setAttribute(getId(),conn);
catch (SQLException e) {
throw new JspTagException(e.toString());
return EVAL_BODY_INCLUDE;
package com.solved.tag.dbtags.connection;
import java.sql.Connection;
import java.sql.SQLException;
import javax.servlet.jsp.tagext.TagSupport;
* JSP tag closeconnection, used to close the
* specified java.sql.Connection.
* JSP Tag Lib Descriptor
* <pre>
* <name>closeConnection</name>
<tagclass>com.solved.tag.dbtags.connection.CloseConnectionTag&
lt;/tagclass>
* <bodycontent>empty</bodycontent>
* <info>Close the specified connection. The "conn"
attribute is the name of a
* connection object in the page context.</info>
* <attribute>
* <name>conn</name>
* <required>true</required>
* <rtexprvalue>false</rtexprvalue>
* </attribute>
* </pre>
* @author Matt Shannon
* @see ConnectionTag
public class CloseConnectionTag extends TagSupport {
private String _connId = null;
* The "conn" attribute is the name of a
* page context object containing a
* java.sql.Connection.
* @param connectionId
* attribute name of the java.sql.Connection to
close.
* @see ConnectionTag
public void setConn(String connectionId) {
_connId = connectionId;
public int doStartTag() {
try {
Connection conn = (Connection)pageContext.getAttribute
(_connId);
conn.close();
} catch (SQLException e) {
// failing to close a connection is not fatal
e.printStackTrace();
return EVAL_BODY_INCLUDE;
public void release() {
_connId = null;
package com.solved.tag.dbtags.connection;
import javax.servlet.jsp.tagext.TagData;
import javax.servlet.jsp.tagext.TagExtraInfo;
import javax.servlet.jsp.tagext.VariableInfo;
* TagExtraInfo for the connection tag. This
* TagExtraInfo specifies that the ConnectionTag
* assigns a java.sql.Connection object to the
* "id" attribute at the end tag.
* @author Matt Shannon
* @see ConnectionTag
public class ConnectionTEI extends TagExtraInfo {
public final VariableInfo[] getVariableInfo(TagData data)
return new VariableInfo[]
new VariableInfo(
data.getAttributeString("id"),
"java.sql.Connection",
true,
VariableInfo.AT_END
data-sources.xml:
<?xml version="1.0"?>
<!DOCTYPE data-sources PUBLIC "Orion data-
sources" "http://xmlns.oracle.com/ias/dtds/data-sources.dtd">
<data-sources>
<data-source
class="oracle.jdbc.pool.OracleConnectionCacheImpl"
name="jdbc/pool/OracleCache"
location="jdbc/pool/OracleCache"
url="jdbc:oracle:thin:@oracle1:1521:pdev"
>
<property name="maxLimit" value="15" />
<property name="cacheScheme" value="2" />
<property name="user" value="console" />
<property name="password" value="console" />
<description>
This DataSource is using an Oracle-native DataSource Class so as
to allow Oracle Specific extensions.
A getConnection() call on this DataSource will return
oracle.jdbc.driver.OracleConnection.
The connection returned is a logical connection.
The caching scheme in place is Fixed Wait. Refer below to
possible values.
Dynamic 1
Fixed Wait 2
Fixed Return Null 3
</description>
</data-source>
</data-sources>
many thanks,
Matt.

Hi. Show me your pool definition.
Joe
Ramamurthy wrote:
I am using the jsp custom tag library from BEA called sqltags.tld which came with Weblogic 5.1. Currently I am using Weblogic6.1 sp2 on Solaris.
I have created a Connection Pool for Sybase database using the driver com.sybase.jdbc.SybDriver.
When I created jsp page to connect to the connection pool using sqltags custom tag library, I am getting the error
"javax.servlet.jsp.JspException: Failed to write body content
at weblogic.taglib.sql.ConnectionTag.doAfterBody(ConnectionTag.java:43)
at jsp_servlet.__hubwcdata._jspService(__sampletest.java:1014)"
After this message, whenever I try to access the same jsp page I am getting the message
"javax.servlet.jsp.JspException: Failed to load JDBC driver: weblogic.jdbc.pool.D
river
at weblogic.taglib.sql.ConnectionTag.doStartTag(ConnectionTag.java:34)
at jsp_servlet.__hubwcdata._jspService(__sampletest.java:205)".
Can you please help me the reason why this problem is happening and how to fix this ?
This problem doexn't happen consistently. This occurs once in a while.
I tried to increase Login delay Seconds parameter in the Connection Pool to 15 sec. It didn't help me much.
Thanks for your help !!!
Ram

WLS 10.3.0.0 Solaris SPARC and DBMS Oracle 10gR2 connection pooling issue

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