Packet errors with JDBC

Hello all,
I have been grinding my teeth over this problem. We are getting SQLExceptions with "unexpected packet", "invalid packet lenght" (including the spelling-error), and "bad packet type". We have absolutely no clue whatsoever what might be causing this. Running on Oracle 10g, and driver version 10.2.0.3.0.
Has anyone ever run into these problems and can they give me the cause, and even the workaround??
Version information:
Manifest-Version: 1.0
Implementation-Vendor: Oracle Corporation
Implementation-Title: ojdbc14.jar
Implementation-Version: Oracle JDBC Driver version - "10.2.0.3.0"
Implementation-Time: Fri Sep 29 09:43:24 2006
Specification-Vendor: Oracle Corporation

We are using driver 11.1.07 with a patch for the "arguments > 7" dreaded bug (Oracle Metalink Note ID 736273.1) and still get this error, so don't waste your time thinking that a driver upgrade to 11.1.07 will help.
Also the error message is still misspelt in their message.properties ...
INVALID_PKT_LENGTH=Invalid Packet Lenght
Any response from Oracle?

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*** The sample code that I tried to run ***
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null

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: : Hello.
: : I tried to run the sample code that I got from OTN, but
: : I couldn't run it because of some errors.
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: Oracle Technology Network
: http://technet.oracle.com
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Any help in resolution please?
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Jan 31, 2006 9:41:08 PM com.evermind.server.Application setConfig
WARNING: Application: current-workspace-app is in failed state as initialization failedjava.lang.InstantiationException: Error occurred initializing connectors. Exception is: Exception creating connection pool. Exception: oracle.oc4j.sql.config.DataSourceConfigException: Unable to create : com.mysql.jdbc.Driver
2006-01-31 21:41:08.531 WARNING J2EE 0JR0013 Exception initializing deployed application: current-workspace-app. Error occurred initializing connectors. Exception is: Exception creating connection pool. Exception: oracle.oc4j.sql.config.DataSourceConfigException: Unable to create : com.mysql.jdbc.Driver
Ready message received from Oc4jNotifier.
Embedded OC4J startup time: 29125 ms.

I did what Manu suggested with no success. Alternatively, I registered the driver jar with embedded OC4J preferences > global > libraries. Still does not work. Please, note, that when I run JUnit tests against my BC4J application modules with JDBC URL as connection type, everything works just fine. The problem comes while running the JSF application when the application module is using JDBC DataSource as connection type.

Error with Download JDBC Drivers page

There appears to be an error with the JDBC Drivers download page. When navigating from the top-level download page, all I'm seeing is '<SCRIPT LANGUAGE="javascri'. Is there another page from which I can download the driver?
Guy Heathcote
Ordnance Survey
UK

The 10g and later drivers trade memory for performance. They use much more memory than the 9i drivers, but are much faster. If you look at the JDBC FAQ here on OTN there is some more info on where the memory is going. The stack trace you posted is what I would expect to see from buffer allocation described in the FAQ.
Douglas

ORA-03115 Error using CLOB with JDBC

When I try to access CLOB field data with JDBC driver, I gets following error:
ORA-03115: unsupported network datatype or representation.
I am using JDBC 8.1.6(Thin), Oracle 8.0.5
on Linux OS.
what's the problem ?
Thank you for any help.
Taesoo.
null

if it is a bug, then its better to upgrade the database to 10.2.0.4. it is the stable verion in 10g.

Error when create XMLType object with JDBC connection

Hello, I try to get an XMLType object with JDBC, but it doesn't work. Can somebody help me?
My code is :
Class.forName("oracle.jdbc.driver.OracleDriver");
Connection conn = DriverManager.getConnection("jdbc:oracle:thin:@"+"a02w03:1521:PROJET", "scott", "tiger");
OraclePreparedStatement stmt = (OraclePreparedStatement) conn.prepareStatement("select xmldoc from cv_col");
ResultSet rset = stmt.executeQuery();
OracleResultSet orset = (OracleResultSet) rset;
while(orset.next())
OPAQUE o = orset.getOPAQUE(1);
System.out.println(o.getSQLTypeName());
XMLType poxml = XMLType.createXML(o);
My database table:
CREATE TABLE cv_col (
XMLDoc xmltype
Execution: The SQL type name "SYS.XMLTYPE" is write and then I obtain the error:
Exception in thread main
java.lang.NoSuchMethodError: java.lang.String oracle.jdbc.internal.OracleConnection.getProtocolType()
     at oracle.xdb.XMLType.initConn(XMLType.java:2072)
     at oracle.xdb.XMLType.<init>(XMLType.java:903)
     at oracle.xdb.XMLType.createXML(XMLType.java:493)
     at Prog.main(Prog.java:26)
Process exited with exit code 1.
Thank you, very much!

What platform are you using for the database, what are you running your code on.
Which database version are you working with.. What is your class path. What version of JDBC and OCI are in the client environment, eg what are CLASSPATH and PATH / LD_LIBRARY_PATH settings. Have you tested your code using a simple IDE like Oracle's JDeveloper or run it from directly from the command line.

Error connecting jdbc with SQL server

Hi,
I get the following error when I try to run a sample program to connect SQLserver with JDBC . The driver I used to connect is " com.microsoft.jdbc.sqlserver.SQLServerDriver ".
I have registered the driver properly but have problem in connecting to JDBC.
java.sql.SQLException: [Microsoft][SQLServer 2000 Driver for JDBC]Unable to connect. Invalid URL.
at com.microsoft.jdbc.base.BaseExceptions.createException(Unknown Source
at com.microsoft.jdbc.base.BaseExceptions.getException(Unknown Source)
at com.microsoft.jdbc.base.BaseDriver.connect(Unknown Source)
at java.sql.DriverManager.getConnection(DriverManager.java:525)
at java.sql.DriverManager.getConnection(DriverManager.java:171)
at Test.main(Test.java:12)
pls help
Thanks in advance

Well there is something wrong with your database URL you are giving to the driver. You should lookup the documentation for the driver and see what format the URL should be in.
Here is an open source driver you could try too -- http://jtds.sourceforge.net/

Netstat not reporting input errors with packets that have bad checksums ?

Greetings,
Is netstat not reporting any checksum errors ? I have a number of Macs reporting checksum errors when sniffing the local net. I would think that these should be reported by netstat as input errors, or collisions right ?
But it doesn't currently. See below for sample, its occurring across protocols, tcp, and udp. Usually this error is a bad ethernet port or cabling, and sometimes a sw issue. Working on eliminating the switches, router, and dsl modem by doing more testing.
But is netstat broke ? I havent seen any errors from netstat since @ 3yrs ago.
length 64, bad cksum 0 (->f9fe)!)
One other question, can one monitor firewire 400/800 ports or usb with netstat ? Its not listed with man pages or netstat -h
Thanks in advance

Im am using two commands to view the data;
netstat -I en0 2;
(no errors in or out)
and tcpdump with the verbose -v argument
( reports the cksum ( these are CRC's right, not IP header checksum ? )
At the very bottom is the netstat -s output, otherwise a snippet of tcpdump ; replaced the IP's with xxxx's to protect the innocent
Thanks for your help.....
===========================
18:13:37.101690 IP (tos 0x0, ttl 64, id 8134, offset 0, flags [DF], proto TCP (6), length 957, *bad cksum 0 (->68d8)!)* xxxxxxxxxx > xxxxxxxxxxxxxxx: P 8689:9594(905) ack 1 win 65535 <nop,nop,timestamp 1438111158 3084046213>
18:13:37.136653 IP (tos 0x0, ttl 57, id 26778, offset 0, flags [DF], proto TCP (6), length 52) xxxxxxxxxx > xxxxxxxxxxxxxxx: ., cksum 0xd4bc (correct), ack 5793 win 17376 <nop,nop,timestamp 3084046248 1438111158>
18:13:37.172381 IP (tos 0x0, ttl 57, id 26779, offset 0, flags [DF], proto TCP (6), length 52) xxxxxxxxxx > xxxxxxxxxxxxxxx: ., cksum 0xc3a0 (correct), ack 7241 win 20272 <nop,nop,timestamp 3084046284 1438111158>
18:13:37.207358 IP (tos 0x0, ttl 57, id 26780, offset 0, flags [DF], proto TCP (6), length 52) xxxxxxxxxx > xxxxxxxxxxxxxxx: ., cksum 0xb285 (correct), ack 8689 win 23168 <nop,nop,timestamp 3084046319 1438111158>
18:13:37.230968 IP (tos 0x0, ttl 57, id 26781, offset 0, flags [DF], proto TCP (6), length 52) xxxxxxxxxx > xxxxxxxxxxxxxxx: ., cksum 0xa395 (correct), ack 9594 win 26064 <nop,nop,timestamp 3084046342 1438111158>
18:13:37.313545 IP (tos 0x0, ttl 57, id 26782, offset 0, flags [DF], proto TCP (6), length 1500) xxxxxxxxxx > xxxxxxxxxxxxxxx: . 1:1449(1448) ack 9594 win 26064 <nop,nop,timestamp 3084046415 1438111158>
18:13:37.322422 IP (tos 0x0, ttl 57, id 26783, offset 0, flags [DF], proto TCP (6), length 1500) xxxxxxxxxx > xxxxxxxxxxxxxxx: . 1449:2897(1448) ack 9594 win 26064 <nop,nop,timestamp 3084046415 1438111158>
18:13:37.322440 IP (tos 0x0, ttl 64, id 8135, offset 0, flags [DF], proto TCP (6), length 52, *bad cksum 0 (->6c60)!)* xxxxxxxxxx > xxxxxxxxxxxxxxx ., *cksum 0xaec3 (incorrect (-> 0xff42)*, ack 2897 win 65160 <nop,nop,timestamp 1438111159 3084046415>
18:13:37.331285 IP (tos 0x0, ttl 57, id 26784, offset 0, flags [DF], proto TCP (6), length 1500) xxxxxxxxxx > xxxxxxxxxxxxxxx: . 2897:4345(1448) ack 9594 win 26064 <nop,nop,timestamp 3084046415 1438111158>
18:13:37.334407 IP (tos 0x0, ttl 57, id 26785, offset 0, flags [DF], proto TCP (6), length 646) xxxxxxxxxx > xxxxxxxxxxxxxxx: P 4345:4939(594) ack 9594 win 26064 <nop,nop,timestamp 3084046415 1438111158>
18:13:37.334421 IP (tos 0x0, ttl 64, id 8136, offset 0, flags [DF], proto TCP (6), length 52, *bad cksum 0 (->6c5f)!*) xxxxxxxxxx > xxxxxxxxxxxxxxx: ., *cksum 0xaec3 (incorrect (-> 0xf5d1)*, ack 4939 win 65535 <nop,nop,timestamp 1438111159 3084046415>
===============================
netstat -s
tcp:
7470 packets sent
2868 data packets (671900 bytes)
0 data packets (0 bytes) retransmitted
0 resends initiated by MTU discovery
3534 ack-only packets (101 delayed)
0 URG only packets
0 window probe packets
657 window update packets
411 control packets
7918 packets received
3225 acks (for 672008 bytes)
185 duplicate acks
0 acks for unsent data
4489 packets (2652174 bytes) received in-sequence
7 completely duplicate packets (7347 bytes)
0 old duplicate packets
0 packets with some dup. data (0 bytes duped)
291 out-of-order packets (412273 bytes)
0 packets (0 bytes) of data after window
0 window probes
1 window update packet
1 packet received after close
0 discarded for bad checksums
0 discarded for bad header offset fields
0 discarded because packet too short
207 connection requests
12 connection accepts
0 bad connection attempts
0 listen queue overflows
219 connections established (including accepts)
231 connections closed (including 9 drops)
2 connections updated cached RTT on close
2 connections updated cached RTT variance on close
0 connections updated cached ssthresh on close
0 embryonic connections dropped
3222 segments updated rtt (of 3193 attempts)
2 retransmit timeouts
0 connections dropped by rexmit timeout
0 persist timeouts
0 connections dropped by persist timeout
0 keepalive timeouts
0 keepalive probes sent
0 connections dropped by keepalive
2199 correct ACK header predictions
4128 correct data packet header predictions
0 SACK recovery episodes
0 segment rexmits in SACK recovery episodes
0 byte rexmits in SACK recovery episodes
0 SACK options (SACK blocks) received
275 SACK options (SACK blocks) sent
0 SACK scoreboard overflow
udp:
360 datagrams received
0 with incomplete header
0 with bad data length field
0 with bad checksum
21 dropped due to no socket
65 broadcast/multicast datagrams dropped due to no socket
0 dropped due to full socket buffers
0 not for hashed pcb
274 delivered
390 datagrams output
ip:
8278 total packets received
0 bad header checksums
0 with size smaller than minimum
0 with data size < data length
0 with ip length > max ip packet size
0 with header length < data size
0 with data length < header length
0 with bad options
0 with incorrect version number
0 fragments received
0 fragments dropped (dup or out of space)
0 fragments dropped after timeout
0 packets reassembled ok
8278 packets for this host
0 packets for unknown/unsupported protocol
0 packets forwarded (0 packets fast forwarded)
0 packets not forwardable
0 packets received for unknown multicast group
0 redirects sent
7869 packets sent from this host
0 packets sent with fabricated ip header
0 output packets dropped due to no bufs, etc.
8 output packets discarded due to no route
0 output datagrams fragmented
0 fragments created
0 datagrams that can't be fragmented
0 tunneling packets that can't find gif
0 datagrams with bad address in header

Cannot assign an empty string to a parameter with JDBC type VARCHAR

Hi,
I am seeing the aforementioned error in the logs. I am guessing its happening whenever I am starting an agent instance in PCo. Can somebody explain whats going on?
Regards,
Chanti.
Heres the complete detail from logs -
Log Record Details
Message: Unable to retreive path for , com.sap.sql.log.OpenSQLException: Failed to set the parameter 1 of the statement >>SELECT ID, PARENTID, FULLPATH, CREATED, CREATEDBY, MODIFIED, MODIFIEDBY, REMOTEPATH, CHECKEDOUTBY FROM XMII_PATHS WHERE FULLPATH = ? <<: Cannot assign an empty string to a parameter with JDBC type >>VARCHAR<<.
Date: 2010-03-12
Time: 11:32:37:435
Category: com.sap.xmii.system.FileManager
Location: com.sap.xmii.system.FileManager
Application: sap.com/xappsxmiiear

Sounds like a UI browsing bug (when no path is selected from a catalog tree folder browser) - I would suggest logging a support ticket so that it can be addressed.

Packet errors with JDBC

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