Database connection problem from RDBMSRealm

Hi Everyone,
I am implementing an application with Weblogic5.1, RDBMSRealm, Merant type 4 JDBC driver and SQL server 7.0. When I am starting
the Weblogic server, I am getting an error as described as follows. Can anyone there give me a clue?
As you see, I am using Merant Spy JDBC driver (for debugging).
With this kind of driver, any JDBC calls to database server
in the code will be displayed.
As you know, there are a quite number of "prepareStatement" from RDBMSRealm. When the weblogic server is starting, they have to be initialized. I don't understand why it needs to make a connection for each "prepareStatement"?, and why it is still in connection mode after it is initialized?
Thanks a lot.
-John
Thu Jan 18 16:01:00 EST 2001: <System Props> weblogic.system.home = Ppg
Thu Jan 18 16:01:00 EST 2001: <System Props> weblogic.system.name = PpgServer
Thu Jan 18 16:01:00 EST 2001: <WebLogicServer> Loaded License : D:/weblogic/license/WebLogicLicense.xml
Thu Jan 18 16:01:00 EST 2001: <WebLogicServer> Server loading from weblogic.class.path. EJB redeployment enabled.
registerDriver: driver[className=com.merant.datadirect.jdbc.sqlserver.SQLServerDriver,com.merant.datadirect.jdbc.sqlserver.SQLServerDriver@d071d920]
skipping: driver[className=weblogic.jdbc.pool.Driver,weblogic.jdbc.pool.Driver@fdd92d]
spy>> Connection accepted by SQLServer
spy>> OK (Connection[1])
getConnection returning driver[className=com.merant.jdbcspy.SpyDriver,com.merant.jdbcspy.SpyDriver@cee1d920]
spy>> Connection[1].prepareStatement(String sql)
spy>> sql = SELECT U_NAME, U_PASSWORD FROM users WHERE U_NAME = ?
spy>> OK (PreparedStatement[1])
spy>> Connection[1].prepareStatement(String sql)
spy>> sql = SELECT A_NAME, A_PRINCIPAL, A_PERMISSION FROM aclentries WHERE A_NA..
spy>> OK (PreparedStatement[2])
spy>> Connection[1].prepareStatement(String sql)
spy>> sql = SELECT U_NAME, U_PASSWORD FROM users
spy>> OK (PreparedStatement[3])
spy>> Connection[1].prepareStatement(String sql)
spy>> sql = SELECT GM_GROUP, GM_MEMBER FROM groupmembers ORDER BY GM_GROUP
spy>> OK (PreparedStatement[4])
spy>> Connection[1].prepareStatement(String sql)
spy>> sql = SELECT A_NAME, A_PRINCIPAL, A_PERMISSION FROM aclentries ORDER BY A..
spy>> java.sql.SQLException: [MERANT][SQLServer JDBC Driver][SQLServer]Login fa..
java.sql.SQLException: [MERANT][SQLServer JDBC Driver][SQLServer]Login failed. The maximum simultaneous user count of 5 licenses for this 'Standard Edition' server has been exceeded. Additional licenses should be ob
tained and installed or you should upgrade to a full version.
at com.merant.datadirect.jdbc.base.BaseExceptions.getException(BaseExceptions.java:72)
at com.merant.datadirect.jdbc.sqlserver.tds.TDSRequest.processErrorToken(TDSRequest.java:401)
at com.merant.datadirect.jdbc.sqlserver.tds.TDSRequest.processReplyToken(TDSRequest.java:1571)
at com.merant.datadirect.jdbc.sqlserver.tds.TDSLoginRequest.processReplyToken(TDSLoginRequest.java:549)
at com.merant.datadirect.jdbc.sqlserver.tds.TDSRequest.processTokensInReply(TDSRequest.java, Compiled Code)
at com.merant.datadirect.jdbc.sqlserver.tds.TDSRequest.processReply(TDSRequest.java:1661)
at com.merant.datadirect.jdbc.sqlserver.SQLServerImplConnection.open(SQLServerImplConnection.java:98)
at com.merant.datadirect.jdbc.base.BaseConnection.getNewImplConnection(BaseConnection.java:405)
at com.merant.datadirect.jdbc.base.BaseConnection.getImplConnection(BaseConnection.java:333)
at com.merant.datadirect.jdbc.base.BaseStatement.getImplConnection(BaseStatement.java:1223)
at com.merant.datadirect.jdbc.base.BaseStatement.getImplStatement(BaseStatement.java:1241)
at com.merant.datadirect.jdbc.base.BasePreparedStatement.<init>(BasePreparedStatement.java:63)
at com.merant.datadirect.jdbc.base.BaseConnection.prepareStatement(BaseConnection.java:960)
at com.merant.jdbcspy.SpyConnection.prepareStatement(Unknown Source)
at com.bea.ppg.rdbmsrealm.RDBMSDelegate.prepare(RDBMSDelegate.java:116)
at com.bea.ppg.rdbmsrealm.RDBMSDelegate.<init>(RDBMSDelegate.java:187)
at com.bea.ppg.rdbmsrealm.RDBMSDelegate$DFactory.newInstance(RDBMSDelegate.java:912)
at weblogic.utils.reuse.Pool.getInstance(Pool.java:57)
at com.bea.ppg.rdbmsrealm.RDBMSRealm.getDelegate(RDBMSRealm.java:115)
at com.bea.ppg.rdbmsrealm.RDBMSRealm.getPermission(RDBMSRealm.java:515)
at weblogic.security.acl.CachingRealm.getPermission(CachingRealm.java:1698)
at weblogic.security.acl.CachingRealm.setupAcls(CachingRealm.java, Compiled Code)
at weblogic.security.acl.CachingRealm.<init>(CachingRealm.java:706)
at weblogic.security.acl.CachingRealm.<init>(CachingRealm.java:564)
at weblogic.t3.srvr.T3Srvr.initializeSecurity(T3Srvr.java:1750)
at weblogic.t3.srvr.T3Srvr.start(T3Srvr.java, Compiled Code)
at weblogic.t3.srvr.T3Srvr.main(T3Srvr.java:827)
at java.lang.reflect.Method.invoke(Native Method)
at weblogic.Server.startServerDynamically(Server.java:99)
at weblogic.Server.main(Server.java:65)
at weblogic.Server.main(Server.java:55)
Unable to initialize server: com.bea.ppg.rdbmsrealm.RDBMSException: realm initialization failed, Connection.prepareStatement() failed on statement "SELECT A_NAME, A_PRINCIPAL, A_PERMISSION FROM aclentries ORDER BY A
_NAME, A_PRINCIPAL", - with nested exception:
[java.sql.SQLException: [MERANT][SQLServer JDBC Driver][SQLServer]Login failed. The maximum simultaneous user count of 5 licenses for this 'Standard Edition' server has been exceeded. Additional licenses should be o
btained and installed or you should upgrade to a full version.]
fatal initialization exception
com.bea.ppg.rdbmsrealm.RDBMSException: realm initialization failed, Connection.prepareStatement() failed on statement "SELECT A_NAME, A_PRINCIPAL, A_PERMISSION FROM aclentries ORDER BY A_NAME, A_PRINCIPAL", - with
nested exception:
[java.sql.SQLException: [MERANT][SQLServer JDBC Driver][SQLServer]Login failed. The maximum simultaneous user count of 5 licenses for this 'Standard Edition' server has been exceeded. Additional licenses should be o
btained and installed or you should upgrade to a full version.]
at com.bea.ppg.rdbmsrealm.RDBMSDelegate.<init>(RDBMSDelegate.java:210)
at com.bea.ppg.rdbmsrealm.RDBMSDelegate$DFactory.newInstance(RDBMSDelegate.java:912)
at weblogic.utils.reuse.Pool.getInstance(Pool.java:57)
at com.bea.ppg.rdbmsrealm.RDBMSRealm.getDelegate(RDBMSRealm.java:115)
at com.bea.ppg.rdbmsrealm.RDBMSRealm.getPermission(RDBMSRealm.java:515)
at weblogic.security.acl.CachingRealm.getPermission(CachingRealm.java:1698)
at weblogic.security.acl.CachingRealm.setupAcls(CachingRealm.java, Compiled Code)
at weblogic.security.acl.CachingRealm.<init>(CachingRealm.java:706)
at weblogic.security.acl.CachingRealm.<init>(CachingRealm.java:564)
at weblogic.t3.srvr.T3Srvr.initializeSecurity(T3Srvr.java:1750)
at weblogic.t3.srvr.T3Srvr.start(T3Srvr.java, Compiled Code)
at weblogic.t3.srvr.T3Srvr.main(T3Srvr.java:827)
at java.lang.reflect.Method.invoke(Native Method)
at weblogic.Server.startServerDynamically(Server.java:99)
at weblogic.Server.main(Server.java:65)
at weblogic.Server.main(Server.java:55)
D:\weblogic>goto finish
D:\weblogic>cd Ppg
D:\weblogic\Ppg>ENDLOCAL
D:\weblogic\Ppg>

John, this should be fairly easy to correct. Make sure that you are closing
your prepared statements after you finish with then. Even if you have 3
connections open and you don't close your statements, more connections will
be opened to take care of need.
Hope that this helps.
Paul
"John Wang" <[email protected]> wrote in message
news:[email protected]...
>
All SQL server connections come from the code itself. As you see in themessage output, everytime when the server is initalizing a
"prepareStatement(String sql)" which comes from RDBMSRealm, it is making a
connection. When it starts the sixth, it is broken. In other words, to make
the server start with RDMBSRealm, I have to have the number of SQL server
licence at least the same as the number of "prepareStatement(String sql)" in
RDBMSRrealm realm. Is my understanding correct here? Why is it still in
connection mode after one "prepareStatement" is initialized? Any ideas?
>
Thanks.
-John
"Pete Cressman" <[email protected]> wrote:
The same error? Hmm... the trace says:
java.sql.SQLException: [MERANT][SQLServer JDBC Driver][SQLServer]Login
failed. The maximum simultaneous user count of 5 licenses for this 'Standard
Edition' server has been exceeded. Additional licenses should be obtained
and installed or you should upgrade to a full version.
>>
Find out who is making so many connections. Sorry, that's the best I cansuggest. Good luck.
>>
"John Wang" <[email protected]> wrote:
Hi Pete,
Thanks for your help.
As you suggested, I modified the value DEFAULT_POOL_SIZE = 2 or 1 and
compiled it again. When I run, it still gave me the same error message. What
could it be wrong?
>>>
-John
"Pete Cressman" <[email protected]> wrote:
RDBMSDelegates are pooled by RDBMSRealm. The connection in each
RDBMSDelegate is held open until the class is disposed. the default pool
size is 6. Your license is limited to 5 connections total. Modify the code
in RDBMSRealm so DEFAULT_POOL_SIZE = 2 or 3.
>>>>
"John Wang" <[email protected]> wrote:
Hi Everyone,
I am implementing an application with Weblogic5.1, RDBMSRealm, Merant
type 4 JDBC driver and SQL server 7.0. When I am starting
the Weblogic server, I am getting an error as described as follows.Can anyone there give me a clue?
>>>>>
As you see, I am using Merant Spy JDBC driver (for debugging).
With this kind of driver, any JDBC calls to database server
in the code will be displayed.
As you know, there are a quite number of "prepareStatement" fromRDBMSRealm. When the weblogic server is starting, they have to be
initialized. I don't understand why it needs to make a connection for each
"prepareStatement"?, and why it is still in connection mode after it is
initialized?
>>>>>
Thanks a lot.
-John
Thu Jan 18 16:01:00 EST 2001: <System Props> weblogic.system.home =Ppg
Thu Jan 18 16:01:00 EST 2001: <System Props> weblogic.system.name =PpgServer
Thu Jan 18 16:01:00 EST 2001: <WebLogicServer> Loaded License :D:/weblogic/license/WebLogicLicense.xml
Thu Jan 18 16:01:00 EST 2001: <WebLogicServer> Server loading fromweblogic.class.path. EJB redeployment enabled.
registerDriver:driver[className=com.merant.datadirect.jdbc.sqlserver.SQLServerDriver,com.me
rant.datadirect.jdbc.sqlserver.SQLServerDriver@d071d920]
skipping:driver[className=weblogic.jdbc.pool.Driver,weblogic.jdbc.pool.Driver@fdd92d]
spy>> Connection accepted by SQLServer
spy>> OK (Connection[1])
getConnection returningdriver[className=com.merant.jdbcspy.SpyDriver,com.merant.jdbcspy.SpyDriver@c
ee1d920]
>>>>>
spy>> Connection[1].prepareStatement(String sql)
spy>> sql = SELECT U_NAME, U_PASSWORD FROM users WHERE U_NAME = ?
spy>> OK (PreparedStatement[1])
spy>> Connection[1].prepareStatement(String sql)
spy>> sql = SELECT A_NAME, A_PRINCIPAL, A_PERMISSION FROM aclentriesWHERE A_NA..
spy>> OK (PreparedStatement[2])
spy>> Connection[1].prepareStatement(String sql)
spy>> sql = SELECT U_NAME, U_PASSWORD FROM users
spy>> OK (PreparedStatement[3])
spy>> Connection[1].prepareStatement(String sql)
spy>> sql = SELECT GM_GROUP, GM_MEMBER FROM groupmembers ORDER BYGM_GROUP
spy>> OK (PreparedStatement[4])
spy>> Connection[1].prepareStatement(String sql)
spy>> sql = SELECT A_NAME, A_PRINCIPAL, A_PERMISSION FROM aclentriesORDER BY A..
spy>> java.sql.SQLException: [MERANT][SQLServer JDBCDriver[SQLServer]Login fa..
java.sql.SQLException: [MERANT][SQLServer JDBC Driver][SQLServer]Login
failed. The maximum simultaneous user count of 5 licenses for this 'Standard
Edition' server has been exceeded. Additional licenses should be ob
tained and installed or you should upgrade to a full version.
atcom.merant.datadirect.jdbc.base.BaseExceptions.getException(BaseExceptions.j
ava:72)
atcom.merant.datadirect.jdbc.sqlserver.tds.TDSRequest.processErrorToken(TDSReq
uest.java:401)
atcom.merant.datadirect.jdbc.sqlserver.tds.TDSRequest.processReplyToken(TDSReq
uest.java:1571)
atcom.merant.datadirect.jdbc.sqlserver.tds.TDSLoginRequest.processReplyToken(T
DSLoginRequest.java:549)
atcom.merant.datadirect.jdbc.sqlserver.tds.TDSRequest.processTokensInReply(TDS
Request.java, Compiled Code)
atcom.merant.datadirect.jdbc.sqlserver.tds.TDSRequest.processReply(TDSRequest.
java:1661)
atcom.merant.datadirect.jdbc.sqlserver.SQLServerImplConnection.open(SQLServerI
mplConnection.java:98)
atcom.merant.datadirect.jdbc.base.BaseConnection.getNewImplConnection(BaseConn
ection.java:405)
atcom.merant.datadirect.jdbc.base.BaseConnection.getImplConnection(BaseConnect
ion.java:333)
atcom.merant.datadirect.jdbc.base.BaseStatement.getImplConnection(BaseStatemen
t.java:1223)
atcom.merant.datadirect.jdbc.base.BaseStatement.getImplStatement(BaseStatement
.java:1241)
atcom.merant.datadirect.jdbc.base.BasePreparedStatement.<init>(BasePreparedSta
tement.java:63)
atcom.merant.datadirect.jdbc.base.BaseConnection.prepareStatement(BaseConnecti
on.java:960)
at com.merant.jdbcspy.SpyConnection.prepareStatement(UnknownSource)
atcom.bea.ppg.rdbmsrealm.RDBMSDelegate.prepare(RDBMSDelegate.java:116)
atcom.bea.ppg.rdbmsrealm.RDBMSDelegate.<init>(RDBMSDelegate.java:187)
atcom.bea.ppg.rdbmsrealm.RDBMSDelegate$DFactory.newInstance(RDBMSDelegate.java
:912)
at weblogic.utils.reuse.Pool.getInstance(Pool.java:57)
atcom.bea.ppg.rdbmsrealm.RDBMSRealm.getDelegate(RDBMSRealm.java:115)
atcom.bea.ppg.rdbmsrealm.RDBMSRealm.getPermission(RDBMSRealm.java:515)
atweblogic.security.acl.CachingRealm.getPermission(CachingRealm.java:1698)
atweblogic.security.acl.CachingRealm.setupAcls(CachingRealm.java, Compiled
Code)
atweblogic.security.acl.CachingRealm.<init>(CachingRealm.java:706)
atweblogic.security.acl.CachingRealm.<init>(CachingRealm.java:564)
atweblogic.t3.srvr.T3Srvr.initializeSecurity(T3Srvr.java:1750)
at weblogic.t3.srvr.T3Srvr.start(T3Srvr.java, Compiled Code)
at weblogic.t3.srvr.T3Srvr.main(T3Srvr.java:827)
at java.lang.reflect.Method.invoke(Native Method)
at weblogic.Server.startServerDynamically(Server.java:99)
at weblogic.Server.main(Server.java:65)
at weblogic.Server.main(Server.java:55)
Unable to initialize server: com.bea.ppg.rdbmsrealm.RDBMSException:realm initialization failed, Connection.prepareStatement() failed on
statement "SELECT A_NAME, A_PRINCIPAL, A_PERMISSION FROM aclentries ORDER BY
A
_NAME, A_PRINCIPAL", - with nested exception:
[java.sql.SQLException: [MERANT][SQLServer JDBCDriver[SQLServer]Login failed. The maximum simultaneous user count of 5licenses for this 'Standard Edition' server has been exceeded. Additional
licenses should be o
btained and installed or you should upgrade to a full version.]
fatal initialization exception
com.bea.ppg.rdbmsrealm.RDBMSException: realm initialization failed,Connection.prepareStatement() failed on statement "SELECT A_NAME,
A_PRINCIPAL, A_PERMISSION FROM aclentries ORDER BY A_NAME, A_PRINCIPAL", -
with
nested exception:
[java.sql.SQLException: [MERANT][SQLServer JDBCDriver[SQLServer]Login failed. The maximum simultaneous user count of 5licenses for this 'Standard Edition' server has been exceeded. Additional
licenses should be o
btained and installed or you should upgrade to a full version.]
atcom.bea.ppg.rdbmsrealm.RDBMSDelegate.<init>(RDBMSDelegate.java:210)
atcom.bea.ppg.rdbmsrealm.RDBMSDelegate$DFactory.newInstance(RDBMSDelegate.java
:912)
at weblogic.utils.reuse.Pool.getInstance(Pool.java:57)
atcom.bea.ppg.rdbmsrealm.RDBMSRealm.getDelegate(RDBMSRealm.java:115)
atcom.bea.ppg.rdbmsrealm.RDBMSRealm.getPermission(RDBMSRealm.java:515)
atweblogic.security.acl.CachingRealm.getPermission(CachingRealm.java:1698)
atweblogic.security.acl.CachingRealm.setupAcls(CachingRealm.java, Compiled
Code)
atweblogic.security.acl.CachingRealm.<init>(CachingRealm.java:706)
atweblogic.security.acl.CachingRealm.<init>(CachingRealm.java:564)
atweblogic.t3.srvr.T3Srvr.initializeSecurity(T3Srvr.java:1750)
at weblogic.t3.srvr.T3Srvr.start(T3Srvr.java, Compiled Code)
at weblogic.t3.srvr.T3Srvr.main(T3Srvr.java:827)
at java.lang.reflect.Method.invoke(Native Method)
at weblogic.Server.startServerDynamically(Server.java:99)
at weblogic.Server.main(Server.java:65)
at weblogic.Server.main(Server.java:55)
D:\weblogic>goto finish
D:\weblogic>cd Ppg
D:\weblogic\Ppg>ENDLOCAL
D:\weblogic\Ppg>

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int cols=rsmd.getColumnCount();
 while(rs.next()) {
 for(int i=1;i<=cols;i++)
 col.addElement(rsmd.getColumnName(i));
 rdata.addElement(rs.getString(i));
 rows.addElement(rdata);
Hope this helps

Connectivity problem from Verizon to China Telecom

It was China Netcom last time. Now, it's China Telecom.
(ref: http://forums.verizon.com/t5/FiOS-Internet/Connectivity-problem-from-Verizon-to-Asia/m-p/646257)
MTR:
HOST: alex-macmini.local Loss% Snt Last Avg Best Wrst StDev
1.|-- 10.21.1.1 0.0% 10 0.4 0.5 0.4 0.6 0.0
2.|-- l100.lsanca-vfttp-75.verizon-gni.net (72.67.93.1) 0.0% 10 8.5 8.9 5.7 21.5 4.5
3.|-- g1-2-0-3.lsanca-lcr-22.verizon-gni.net (130.81.223.8) 0.0% 10 9.5 12.2 9.1 26.4 5.1
4.|-- ae10-0.lax01-bb-rtr2.verizon-gni.net (130.81.199.106) 0.0% 10 10.7 11.1 9.9 15.7 1.6
5.|-- 0.ae4.xl4.lax1.alter.net (140.222.227.129) 0.0% 10 14.9 13.5 10.3 15.9 1.9
6.|-- 0.xe-11-2-0.gw2.lax1.alter.net (152.63.4.197) 0.0% 10 15.1 13.6 11.9 15.5 1.1
7.|-- internet-gw.customer.alter.net (157.130.230.74) 20.0% 10 336.4 324.1 302.2 336.4 10.5
8.|-- 202.97.90.129 10.0% 10 333.8 325.4 299.6 339.0 10.8
9.|-- 202.97.51.137 10.0% 10 500.4 489.1 459.6 503.8 12.8
10.|-- 202.97.34.81 30.0% 10 504.0 491.6 455.9 504.7 16.9
11.|-- 202.97.33.169 10.0% 10 513.5 501.7 480.6 517.4 11.1
12.|-- 119.147.222.34 10.0% 10 497.0 485.0 448.9 502.8 15.3
13.|-- 119.147.222.202 50.0% 10 502.0 482.7 452.6 502.0 18.2
14.|-- 119.147.27.226 10.0% 10 508.3 499.6 474.5 516.8 13.2
15.|-- ??? 100.0 10 0.0 0.0 0.0 0.0 0.0
16.|-- 183.60.57.155 0.0% 10 507.1 494.4 477.4 507.1 9.1
Note 7, 8, 9 are in China. 20% gateway packet loss? Unacceptable. Consider how badly TCP was designed, congestion control would render the link useless.

Things are only worse
HOST: alex-macmini.local Loss% Snt Last Avg Best Wrst StDev
1.|-- 10.21.1.1 0.0% 10 0.5 0.5 0.4 0.6 0.0
2.|-- l100.lsanca-vfttp-75.verizon-gni.net (72.67.93.1) 0.0% 10 34.3 18.2 5.0 34.3 10.3
3.|-- g1-2-0-2.lsanca-lcr-22.verizon-gni.net (130.81.223.12) 0.0% 10 10.2 11.7 9.4 14.8 1.7
4.|-- so-3-1-0-0.lax01-bb-rtr2.verizon-gni.net (130.81.199.40) 0.0% 10 8.9 11.8 8.4 23.2 4.2
5.|-- 0.ae4.xl4.lax1.alter.net (140.222.227.129) 0.0% 10 14.4 12.9 10.7 14.4 1.0
6.|-- 0.xe-11-3-0.gw2.lax1.alter.net (152.63.4.201) 0.0% 10 10.7 13.8 10.7 26.4 4.5
7.|-- internet-gw.customer.alter.net (157.130.230.74) 20.0% 10 343.6 345.2 337.0 350.7 5.2
8.|-- 202.97.50.45 10.0% 10 347.0 347.7 339.7 353.5 4.6
9.|-- 202.97.52.253 10.0% 10 489.7 491.5 482.4 510.1 7.9
10.|-- 202.97.58.97 0.0% 10 494.0 494.9 489.6 498.8 3.3
11.|-- 202.97.53.37 0.0% 10 496.6 498.9 494.2 502.7 2.9
12.|-- 202.97.57.206 20.0% 10 494.7 498.6 494.7 501.7 2.6
13.|-- bj141-130-154.bjtelecom.net (219.141.130.154) 50.0% 10 502.3 498.2 495.2 502.3 2.4
14.|-- ??? 100.0 10 0.0 0.0 0.0 0.0 0.0
15.|-- ??? 100.0 10 0.0 0.0 0.0 0.0 0.0
16.|-- ??? 100.0 10 0.0 0.0 0.0 0.0 0.0
17.|-- 219.239.92.194 0.0% 10 510.3 514.8 510.3 519.8 3.1
18.|-- 124.202.11.62 0.0% 10 506.9 512.4 505.0 516.9 3.8
19.|-- 124.202.11.30 20.0% 10 506.2 513.0 506.1 517.4 4.4
20.|-- 115.182.92.1 0.0% 9 486.5 495.1 486.5 499.5 4.3

Jsp-database connectivity problem

hi
There is a problem, when ever i write a jdbc code for database connectivity through MsAcess, in general applications it works fine. But when ever i try to the same using Jsps it throws an exception that " Microsoft jdbc-odbc driver not fount, Default driver not specified"
please do help regarding this
the code i used is
package Products; import java.sql.*;import java.util.*; public class product{ public Vector getCategories() { Connection con; Statement st; ResultSet rs; Vector ret=new Vector(1,1); try { Class.forName("sun.jdbc.odbc.JdbcOdbcDriver"); con=DriverManager.getConnection("jdbc:odbc:Web"); st=con.createStatement(); rs=st.executeQuery("Select * from Categories"); while(rs.next()) { ret.add(rs.getString(2)); ); } } catch(Exception e) { //System.out.println("Exception..."); ret.add(e.getMessage()); } return ret; }}

Have you downloaded the driver and put it in your Web-Server?
In tomcat you simply need to copy the file in:
Tomcat 5.0\common\lib

Database connectivity problem with instant client.

Guys,
I've installed the Oracle instant client basic and ODBC files in my system.
But when I create a system DSN and test the connectivity my database connectivity,it fails with
ORA-12637:Packet receive failed error
My TNSNAMES reads below:
ONDSP101.DIGITALINDIASW.NET =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = namesrv1.xy.zz.com)(PORT = 1522))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = ONDSP101)
and my SQLNET as below:
AUTOMATIC_IPC = OFF
TRACE_LEVEL_CLIENT = ON
SQLNET.INBOUND_CONNECT_TIMEOUT=20
NAMES.DEFAULT_DOMAIN = na.pg.com
NAME.DEFAULT_ZONE = na.pg.com
SQLNET.CRYPTO_SEED = "kdg:9yv2$-plo*u6b2x!"
NAMES.DIRECTORY_PATH = (ONAMES,TNSNAMES)
NAMES.PREFERRED_SERVERS =
(ADDRESS_LIST =
(ADDRESS =
(COMMUNITY = TCP.xy.zz.com)
(PROTOCOL = TCP)
(Host = namesrv1.xy.zz.com)
(Port = 1522)
(ADDRESS =
(COMMUNITY = TCP.xy.zz.com)
(PROTOCOL = TCP)
(Host = namesrv2.xy.zz.com)
(Port = 1522)
I've placed my TNSNAMES and SQLNET file in the same folder having the instant client files and I've set my TNSADMIN,LD_LIBRARY_PATH and PATH environmental variable to the folder location.
Note:I'm able to connect to the database using SQLplus.
Thanks,
Bhagat

12637, 00000, "Packet receive failed"
// *Cause: A process was unable to receive a packet from another process.
// Possible causes are:
// 1. The other process was terminated.
// 2. The machine on which the other process is running went down.
// 3. Some other communications error occurred.
// *Action: If the cause is not obvious, contact Oracle Customer Support.
These days I very seldom use ODBC for Oracle - most recently it was simply to get Enterprise Architect to "talk" to Oracle. I never used it for my client applications (unlike in the fast distant past), so what I know about ODBC is seriously outdated.
Even so, a few comments. :-)
Have you tried creating a user DSN, in case a system DSN somehow works different environment wise?
The above error description sounds like the original TCP connection was successful (i.e. it is not a host unknown or not reachable error). Subsequent packets seem to fails.
To confirm, run the listener on namesrv1.xy.zz.com with logging enabled and have a look at the listener.log - does it show a connection being accepted/handled from your PC when you use the ODBC DSN?
Have you tried the Oracle ODBC drivers? When getting EA connected I had problems (also with Instant Client) and Microsoft ODBC driver for Oracle. Downloaded and installed the Oracle ODBC driver and it worked just fine first time around.
PS. You should raise this topic on the Instant Client Forum instead.

Database Connection Problem-SQL SERVER 2005

Dear all,
I have been struggling with this database connection.I have installed sql server 2005 in my PC and i am trying to connect to the Database Adventity.But it is showing port 1432 invalid.I have placed sqljdbc jar in my lib folder.If i dont specify Database name then it will print hi Message..if i specify Database name then the error will come.
MY CODE is::
<%@page import="java.sql.*,java.io.*,java.lang.*,java.util.*,java.util.Vector,bean.*" %>
<%
 Connection con;
 Statement stmt;
 String url= "jdbc:sqlserver://156.0.11.140:1433/Adventity";
 Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver");
 con = DriverManager.getConnection(url,"sa","hcl@123");
 stmt = con.createStatement();
 out.println("hi");
%>
THE ERROR IS:
javax.servlet.ServletException: The port number 1433/Adventity is not valid.
 org.apache.jasper.runtime.PageContextImpl.doHandlePageException(PageContextImpl.java:867)
 org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:800)
 org.apache.jsp.adv1_jsp._jspService(adv1_jsp.java:66)
 org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:133)
 javax.servlet.http.HttpServlet.service(HttpServlet.java:856)
 org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:311)
 org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:301)
 org.apache.jasper.servlet.JspServlet.service(JspServlet.java:248)
 javax.servlet.http.HttpServlet.service(HttpServlet.java:856)
root cause
PLEASE HELP ME TO GET RID OUT FROM THIS PROBLEM.
THANKS IN ADVANCE.

hi
i have given what u said and it is not working but it displays blank page.even i tried to getdate..
pls help me
<%@page import="java.sql.*,java.io.*,java.lang.*,java.util.*,java.util.Vector,bean.*" %>
<%
 Connection con;
 Statement stmt;
 try
 String url= "jdbc:sqlserver://156.0.11.140:1433;databaseName=test";
 Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver");
 con = DriverManager.getConnection(url,"sa","hcl@123");
 stmt = con.createStatement();
 String user="select getdate();"
 System.out.println(user);
 catch (Exception e) {
 out.println(e.toString());
 } finally {
 try {
 } catch (Exception e) {
 e.printStackTrace() ;
%>

Database Connection Problem on Linux

I have recently installed Oracle Database on a linux server. The app server that accesses db is JBoss.
Always, I end up seeing an error "java.sql.SQLException: No more data to read from socket".
To verify if the problem is with JBoss, I have written a simple stand alone java class to access the db, and ended up with the same error.
Can anybody help me out ??
-Aswin.

This error most likely occurs in applications that
use a database connections pool. When the application
checked out a connection that has been timed out or
has been staled, and used it to connect to the
database, this error occurs.
Could also be a result of connection timeout.Yeah! may be it is the result of connection timeout, but I am sure it cannot be realted to connection pool, because to verify if there were any configuration problems on JBoss, we have written a simple java class that directly accesses the database.
If it is because of connection timeout, how do i fix it ??

Database connection problem SQL Error: 20, SQLState: 61000

we are doing stress test on our new web site that uses vaadin framework and hibernate. Our application/web server is apache tomcat and maximum thread number is adjusted to 750.
we are using jmeter for stress test and when we send 500 user scenario (approximately 15 - 20 database connection per user) in 30 seconds
we are encountered the following error:
*14:43:10,502 WARN JDBCExceptionReporter:233 - SQL Error: 20, SQLState: 61000*
*14:43:10,503 ERROR JDBCExceptionReporter:234 - The Network Adapter could not establish the connection*
but if we send 500 user in 45 seconds there is no problem, jmeter test is completed with 100% success. even if we send 900 user in 120 or 180 second it is OK.
it seems that there is a DB related parameter that we could not handle properly or maybe operating system limitation (windows 2008 R2).
any help will be appreciated. thanks in advance.
gokhan
Edited by: gokhangulgezen on May 31, 2011 6:38 AM

It's the DBMS. Oracle particularly can react this way when there are too many connection requests
coming in, whether from multiple threads at once, or even from one thread in a tight loop. I do
not know if there's a way to moderate/adjust this. I typically recommend using connection-pooling,
and to do as much as possible to populate the pool before there is application load.
Joe

J dev 11g database connection problem...

database connection can't be create..
We fill all of off necassery fields.
test the connection.
result is success".
but we can't say OK. OK button not work. So we can't save conection.

Ali,
as this appears to be installation specific, does this problem reproduce on another machine (if you have one around?). This could be a problem with locales, but I am not sure abouzt it.
Also, can you start JDeveloper from a commandline
jdeveloper_11_preview\jdev\bin\jdev.exe
This prints possible exceptions to the command window. When you create the database conenction, check if there is a new message written to this window
Frank

Database Connection Problem in Oracle9i Lite Web-to-Go

Hi
I am having problem in the Database Connectivity. I am using the OracleDriver class for the connection and have defined the DataSource in the struts-config.xml as
<data-sources>
<data-source>
<set-property property="driverClass"
value="oracle.jdbc.driver.OracleDriver" />
<set-property property="url"
value="jdbc:oracle:thin:@192.50.200.201:1521:WEBTOGO.WORLD" />
<set-property property="maxCount"
value="5"/>
<set-property property="minCount"
value="1"/>
<set-property property="user"
value="master"/>
<set-property property="password"
value="ramchow"/>
</data-source>
</data-sources>
But when I am trying to do any database transaction it is throwing the following exception..
log9: [ERROR] ActionServlet - -Initializing application data source org.apache.s
truts.action.DATA_SOURCE <java.sql.SQLException: Io exception: Connection refuse
d(DESCRIPTION=(TMP=)(VSNNUM=153093120)(ERR=12505)(ERROR_STACK=(ERROR=(CODE=12505
)(EMFI=4))))>java.sql.SQLException: Io exception: Connection refused(DESCRIPTION
=(TMP=)(VSNNUM=153093120)(ERR=12505)(ERROR_STACK=(ERROR=(CODE=12505)(EMFI=4))))
at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:180)
at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:222)
at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:335)
at oracle.jdbc.driver.OracleConnection.<init>(OracleConnection.java:361)
at oracle.jdbc.driver.OracleDriver.getConnectionInstance(OracleDriver.ja
va:442)
at oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:321)
at org.apache.struts.legacy.GenericDataSource.createConnection(GenericDa
taSource.java:805)
at org.apache.struts.legacy.GenericDataSource.open(GenericDataSource.jav
a:741)
at org.apache.struts.action.ActionServlet.initModuleDataSources(ActionSe
rvlet.java:1085)
at org.apache.struts.action.ActionServlet.init(ActionServlet.java:472)
at javax.servlet.GenericServlet.init(GenericServlet.java:258)
at oracle.lite.web.JupServlet.createInstance(JupServlet.java:349)
at oracle.lite.web.JupServlet.getServlet(JupServlet.java:322)
at oracle.lite.web.JupServlet.service(JupServlet.java:216)
at oracle.lite.web.AppServletHandler.handle(AppServletHandler.java:297)
at oracle.lite.web.JupApplication.service(JupApplication.java:550)
at oracle.lite.web.JupHandler.handle(JupHandler.java:109)
at oracle.lite.web.HTTPServer.process(HTTPServer.java:306)
at oracle.lite.web.HTTPServer.handleRequest(HTTPServer.java:162)
at oracle.lite.web.JupServer.handle(JupServer.java:310)
at oracle.lite.web.SocketListener.process(SocketListener.java:172)
at oracle.lite.web.SocketListener$ReqHandler.run(SocketListener.java:226
log9: javax.servlet.UnavailableException: Initializing application data source o
rg.apache.struts.action.DATA_SOURCE
log9: at org.apache.struts.action.ActionServlet.initModuleDataSources(ActionSe
rvlet.java:1091)
log9: at org.apache.struts.action.ActionServlet.init(ActionServlet.java:472)
log9: at javax.servlet.GenericServlet.init(GenericServlet.java:258)
log9: at oracle.lite.web.JupServlet.createInstance(JupServlet.java:349)
log9: at oracle.lite.web.JupServlet.getServlet(JupServlet.java:322)
log9: at oracle.lite.web.JupServlet.service(JupServlet.java:216)
log9: at oracle.lite.web.AppServletHandler.handle(AppServletHandler.java:297)
log9: at oracle.lite.web.JupApplication.service(JupApplication.java:550)
log9: at oracle.lite.web.JupHandler.handle(JupHandler.java:109)
log9: at oracle.lite.web.HTTPServer.process(HTTPServer.java:306)
log9: at oracle.lite.web.HTTPServer.handleRequest(HTTPServer.java:162)
log9: at oracle.lite.web.JupServer.handle(JupServer.java:310)
log9: at oracle.lite.web.SocketListener.process(SocketListener.java:172)
log9: at oracle.lite.web.SocketListener$ReqHandler.run(SocketListener.java:226.
Can anybody guide me what can be the problem asap.
regards
ramchow

Ramesh,
This looks like it might be a Java class mismatch error. Do you have multiple versions of Java installed on your machine? If so, you may want to keep one version and remove the rest.
If you're already running just one version, you may want to check the registry and classpath for references to multiple Java versions, or version that no longer exist.
Please let me know if you have additional questions.
Junius

Database connection problem in Oracle 8.1.6

Hi,
I have a program which was written in C++ and Pro*C for UNIX. I didn't use runtime context for database connection.The program runs ok under Oracle 8.0.4. When compiled and run under Oracle 8.1.6 I got a "libc internal error - _rmutex_unlock not held" error. This error occurs only when "EXEC SQL CONNECT :loginName " is called.
I wonder if we always have to create a runtime context for connection under Oracle 8.1.6 ?
Thanks in advance for your help.
Harry

I had the same symptom from a multithreaded C++ application
until I added the -mt option to the CC command when linking.
You are supposed to use it for compiling, too.
Louis Warshawsky
Computer Associates

Database connecting problem using iPlanet Server

hi experts,
i am new begi to iPlanet server.
before that i was using JWS2.0.
simple servlet is working fine in iPlanet.
when coming to database connectivity, there is error shown as
"SQLException java.sql.SQLException: [Microsoft][ODBC Driver Manager] Data source name not found and no default driver specified "
below is my servlet
import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
import java.sql.*;
import java.util.*;
public class test1 extends HttpServlet
Connection dbCon;
Statement stat;
public void init(ServletConfig config) throws javax.servlet.ServletException
public void doGet (HttpServletRequest request,HttpServletResponse response) throws ServletException, IOException
ResultSet rs;
response.setContentType("text/html");
PrintWriter out = response.getWriter();
try
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
dbCon = DriverManager.getConnection("jdbc:odbc:collegeodbc","","");
stat = dbCon.createStatement();
rs = stat.executeQuery("select * from degrees");
rs.next();
out.println(rs.getString(1));
rs.close();
catch(ClassNotFoundException ce)
out.println("Class Not Found "+ce);
catch(SQLException se)
out.println("SQLException "+se);
public void destroy()
this same coding with void main() in system working fine.
still that servlet working fine with JWS2.0 also, but not in iPlanet.
any idea.
Plz help experts
thanks in adv.

hi,
yes u can avoid restarting the server after compiling a servlet
just follow the following instruction
go to \Netscape\Server4\https-admserv\config\contexts.properties
and uncomment the following lines
context.global.reloadInterval=1
context.global.isModifiedCheckAggressive=true
and do the same step for the following properties file in
\Netscape\Server4\https-"ur machine name"\config\contexts.properties
and u can avoid restarting the server after u compile a servlet

DATABASE CONNECTIVITY PROBLEM IN JSP

Hello Friends .
I am facing problem in database connectivity with JSP . Following is the code .
<%
String accessDBURLPrefix = "jdbc:odbc:Driver={Microsoft Access Driver (*.mdb)};DBQ=";
String accessDBURLSuffix = ";DriverID=22;READONLY=false}";
String databaseURL = accessDBURLPrefix + "db1.mdb" + accessDBURLSuffix;
try
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
java.sql.Connection con = java.sql.DriverManager.getConnection(databaseURL, "", "");
out.println("Connection created sucessfully");
catch(Exception e)
out.println(e);
%>
It gives following output :
java.sql.SQLException: [Microsoft][ODBC Microsoft Access Driver] Could not find file '(unknown)'.
If I run the code in core java application then it works sucessfully .
Plz help me to find the solution .
I am using sun studio Enterprise 8.1
have stored the access file in web direcotry in the project.
---------------------------------------------------------------------------------------------------------------------------------------------------------------------

Please use CODE tags when posting code. You are losing some of the plus signs of string concatenation to the forum's formatting beast.
Preferred solution: Don't use Access as a database. The JDBC-ODBC bridge is always troublesome.
If you must use Access...
Well the message is easy enough to understand: it can't find the database db1.mdb.
You say you put db1.mdb in the web directory. Obviously the computer is not looking there (silly computer for not looking where you put the file)
So it is up to you to be smart and tell the computer exactly where to go.
Using application.getRealPath("/db1.mdb") in place of "db1.mdb" will probably work in a JSP.
String databaseURL = accessDBURLPrefix + application.getRealPath("/db1.mdb") + accessDBURLSuffix;cheers,
evnafets

Database connection problem java.lang.ArrayIndexOutOfBoundsException

Hi,
I am using Interstage server 7 and Oracle 11g for upgradation of project, application compilation is fine, but when I run the application its giving database connection exception.
Full stack trace like below. JDK version is 1.3. can anybody tell me what may be the problem?
2010-11-22 15:16:42 - ConnectionPool()
java.lang.ArrayIndexOutOfBoundsException
 at oracle.security.o3logon.C1.r(C1)
 at oracle.security.o3logon.C1.l(C1)
 at oracle.security.o3logon.C0.c(C0)
 at oracle.security.o3logon.O3LoginClientHelper.getEPasswd(O3LoginClientHelper)
 at oracle.jdbc.ttc7.O3log.<init>(O3log.java:291)
 at oracle.jdbc.ttc7.TTC7Protocol.logon(TTC7Protocol.java:257)
 at oracle.jdbc.driver.OracleConnection.<init>(OracleConnection.java:307)
 at oracle.jdbc.driver.OracleDriver.getConnectionInstance(OracleDriver.java:442)
 at oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:321)
 at java.sql.DriverManager.getConnection(DriverManager.java:512)
 at java.sql.DriverManager.getConnection(DriverManager.java:172)
 at jp.tt.framework.db.DBConnection.getConnection(DBConnection.java:65)
 at jp.tt.framework.db.DBConnection.getConnection(DBConnection.java:88)
 at jp.tt.framework.db.ConnectionPool.<init>(ConnectionPool.java:38)
 at jp.tt.framework.BaseCommon.<clinit>(BaseCommon.java:217)
 at jp.tt.framework.core.Crypt.getInstance(Crypt.java:79)
 at org.apache.jsp.menu_jsp._jspService(menu_jsp.java:53)
 at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:309)
 at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
 at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:239)
 at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:362)
 at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:246)
 at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:511)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:270)
 at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:412)
 at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)
 at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
 at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
 at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:301)
 at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)
 at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
 at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
 at org.apache.catalina.core.StandardContext.invoke(StandardContext.java:2515)
 at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:249)
 at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)
 at org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherValve.java:171)
 at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:641)
 at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:184)
 at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:641)
 at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
 at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
 at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:180)
 at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)
 at org.apache.catalina.valves.RequestFilterValve.process(RequestFilterValve.java:370)
 at org.apache.catalina.valves.RemoteAddrValve.invoke(RemoteAddrValve.java:137)
 at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:641)
 at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
 at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
 at org.apache.coyote.tomcat4.CoyoteAdapter.service(CoyoteAdapter.java:232)
 at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:646)
 at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:436)
 at org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:806)
 at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:619)
 at java.lang.Thread.run(Thread.java:479)
Thanks in advance
Manjunath
Edited by: 814259 on 2010/11/21 23:47
Edited by: 814259 on 2010/11/21 23:49

Thank you for the replies
The problem got solved. Problem was older version of Oracle driver was placed in WEB-INF/lib and a directory called lbrary(we created it) above WEB-INF, we were placed newer version of driver in oracle's jdbc/lib directory and specified that path in classpath. But by default the older version was prioritized and used by application so we were getting the exception mentioned. When we deleted older version of driver everything got working. This explation may help for those who have similar type of problems.
Thanks

Database connection problem from RDBMSRealm

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