I have a Java application which needs to be audited (so obviously I need a way in which the app can be identified with the application name). I googled and found that ojdbc14 has the method .setClientInfo which allows registering the application with a customized name, so I am trying to get it work but I get the following error:
Exception in thread "main" java.lang.AbstractMethodError:
oracle.jdbc.driver.T4CConnection.setClientInfo(Ljava/lang/String;Ljava/lang/String;)V
I am using ojdbc14 with oracle 10g express. If I do not set the line:
connection.setClientInfo("ApplicationName","Customers");
it works pretty well ....and by checking the audit info I can see that oracle gets the application name:OS_program_name=JDBC Thin Client, but I need a way to change it for a customized name.
By uncommenting that line which is supposed to set the application name it returns the error above.
Per oracle documentation that method is available for a Connection object. Do you have any idea how to solve this issue?
For AbstractMethodError, please check Why do I get java.lang.AbstractMethodError when trying to load a blob in the db?
In order to distinguish your connections in Oracle you can use this sample code below:
Properties jdbcProperties = new Properties();
this.jdbcProperties.put("user", userName);
this.jdbcProperties.put("password", password);
this.jdbcProperties.put("v$session.program", "YourApplicationName");
DriverManager.getConnection(url, jdbcProperties);
then check v$session by grouping against program column for your connections..
Related
We are in the process of upgrading our database version from DB2 11.1.3 to DB2 11.5.6. We have been using Flyway for 4 years for migrating our code. The version we are using is 5.1.3 and it is working well, except it throws a warning the DB2 11.5 is not supported.
I have downloaded and tried to use Flyway 7.13.0 and 7.15.0 in our process but they both throw the following error
ERROR: Unable to obtain connection from database (jdbc:db2://VAN-FCALLANDER:50000/TMLCLCUR:retrieveMessagesFromServerOnGetMessage=true;) for user 'TMWIN': [jcc][10214][10050][4.29.24] java.util.Properties object passed to java.sql.Driver.connect() cannot be overridden by URL: jdbc:db2://VAN-FCALLANDER:50000/TMLCLCUR:retrieveMessagesFromServerOnGetMessage=true;. ERRORCODE=-4461, SQLSTATE=42815
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
SQL State : 42815
Error Code : -4461
Message : [jcc][10214][10050][4.29.24] java.util.Properties object passed to java.sql.Driver.connect() cannot be overridden by URL: jdbc:db2://VAN-FCALLANDER:50000/TMLCLCUR:retrieveMessagesFromServerOnGetMessage=true;. ERRORCODE=-4461, SQLSTATE=42815
Caused by: com.ibm.db2.jcc.am.SqlSyntaxErrorException: [jcc][10214][10050][4.29.24] java.util.Properties object passed to java.sql.Driver.connect() cannot be overridden by URL: jdbc:db2://VAN-FCALLANDER:50000/TMLCLCUR:retrieveMessagesFromServerOnGetMessage=true;. ERRORCODE=-4461, SQLSTATE=42815
According to IBM, the error being returned is from the way the parameter is set by Flyway. https://www.ibm.com/docs/en/db2/11.5?topic=errors-errorcode-4461
I have tried using both the 11.1 (type3) driver and the 11.5 (type4) driver and both are throwing the same message.
Any idea how to get around this without updating the actual Flyway code the way IBM suggests?
Looks like the Flyway code may need some change.
Check their issues page and open a ticket if a ticket does not already exist there.
Otherwise there are possible workarounds for now.
In your specific case, the attribute appended to the URL triggers the exception so you can try:
(1) Change the flyway.url to remove :retrieveMessagesFromServerOnGetMessage=true
(2) Change the flyway config to supply this property via the fltway.jdbcProperties (or equivalent method) if that is enabled in your flyway version: flyway.jdbcProperties.retrieveMessagesFromServerOnGetMessage=true . See docs
https://flywaydb.org/documentation/configuration/parameters/jdbcProperties
or
(3) externally configure the connection property that you need via the IBM db2dsdriver.cfg. See the IBM Db2 documentation for details. The idea is that you can put all (or some of) the Data Source Name details and parameters into an XML file (db2dsdriver.cfg) and the Db2 driver will parse that at runtime to carry out your instructions.
or
(4) remove the property from the URL and suffer the absence of detailed messages on errors until the flyway code gets fixed.
I have been using Oracle cloud PAAS linux server for my DB machine (Oracle 11g) and having linux application server where i can run all my Java applications.
Assume i have spring based web application which can connect cloud DB machine. I have tried to access the schema in Toad for oracle, it is working as expected but when i try to hit the DB for retrieving the data from application it gives below error.
java.sql.SQLException: Io exception: Oracle Error ORA-12650
at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:112)
at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:146)
at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:255)
at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:387)
at oracle.jdbc.driver.PhysicalConnection.<init>(PhysicalConnection.java:420)
at oracle.jdbc.driver.T4CConnection.<init>(T4CConnection.java:165)
at oracle.jdbc.driver.T4CDriverExtension.getConnection(T4CDriverExtension.java:35)
at oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:801)
at java.sql.DriverManager.getConnection(DriverManager.java:582)
at java.sql.DriverManager.getConnection(DriverManager.java:154)
at GetConnection.main(GetConnection.java:35)
I have also tried to extend the service access from SID to service name in DB machine. Still give same error. Same code works fine in another cloud machine, which was set by us. But this cloud machine was done by oracle team and most of the things are by default.
Please share your suggestion to fix this issue.
This issue is because of Oracle DB machine encryption ENCRYPTION_SERVER settings. As i understood which is default and set it to enabled, when we set it to disabled or comment the line then application will work as expected. Below is the file name for reference,
Filename : sqlnet.ora (We have to disable ENCRYPTION_SERVER settings)
File Location : ../oracle/product/11.2.0/dbhome_1/network/admin
Hope this helps some one.!
It did not help me at all. Actually I followed your solution and I ended up having another error more critical and serious than the one trying to solve.
Let me explain. First of all the value "disabled" that you mentioned is not even an accepted value for this parameter. According to Oracle (Oracle Docs) these are the accepted values that anyone can use:
SQLNET.ENCRYPTION_SERVER
Purpose
To turn encryption on for the database server.
Default
accepted
Values
accepted: to enable the security service if required or requested by the other side.
rejected: to disable the security service, even if the required by the other side.
requested: to enable the security service if the other side allows it.
required: to enable the security service and disallow the connection if the other side is not enabled for the security service.
Example
SQLNET.ENCRYPTION_SERVER=accepted
In my case being a 12c Oracle Cloud database the default was set to "required" giving me the error "Io exception: Oracle Error ORA-12650" when trying to start my application.
Setting the parameter to "accepted" solved the issue and managed to start my application.
In case you still get the error you can also set the following parameter to accepted:
SQLNET.CRYPTO_CHECKSUM_SERVER = accepted
if you see that in your sqlnet.ora the value is set to "required".
Please have in mind that my application as well as my OCI setup are for testing purposes only and they are not intended to be used in production environment. Setting the value of SQLNET.ENCRYPTION_SERVER and SQLNET.CRYPTO_CHECKSUM_SERVER to "accepted" will significantly lower your Database's security making it vulnerable to any attacks from any application that has access to it. The best case scenario is to modify your application to use the ENCRYPTION as "required".
Downgrading the OJDBC jar to version7 also works - Replace higher version(ojdbc14.jar was the culprit in my case) with ojdbc7.jar in your dependency files
Crate database offers a jdbc driver through which I should be able to connect to Crate from Nifi using DBCPConnectionPool controller service. So I did that, I get a connection, the ConvertJSONToSQL processor is able to get the columns from the Crate database but when I get to the PUTSql processor I get the following error:
FlowFileHandlingException: transfer relationship not specified
The thing is that I have a SUCCESS, FAILURE, RETRY relationship defined. It just throws a ProcessException in the onTrigger() method.
Any ideas how can I make it work ?
As soon as the jdbc driver is compatible it should work, but ...
I believe this is a bug in PutSQL that is hiding an issue either in the JDBC configuration, SQL statement, or something else. Using the standalone JDBC driver with valid SQL INSERT statements, I was able to PutSQL working with Crate.
Can you double-check your connection information and SQL statement(s)? Also if you can reproduce and want to share the SQL and/or connection info (JDBC URL, e.g.), please feel free, it could help get to the bottom of the PutSQL bug that is hiding another issue.
I am trying to connect to a db2 database in Java. Below the driver and the connection string and the driver details i am giving
Class.forName("COM.ibm.db2.jdbc.net.DB2Driver");
String url="jdbc:db2://hostname:portnumber/databasename";
sourceConnection=DriverManager.getConnection(url,"username","password");
But I am getting the below exception
"COM.ibm.db2.jdbc.DB2Exception: [IBM][JDBC Driver] CLI0615E Error receiving from socket, server is not responding. SQLSTATE=08S01"
I also tried changing the connection string to
String url="jdbc:db2:hostname:portnumber/databasename";
Still it is resulting the same exception above while trying to get the Connection.
And i have tried the below option also using JDBC app driver
Class.forName("COM.ibm.db2.jdbc.app.DB2Driver");
DB2DataSource db2ds = new DB2DataSource();
db2ds.setServerName("hostname");
db2ds.setPortNumber(portnumber);
db2ds.setDatabaseName("databasename");
db2ds.setUser("username");
db2ds.setPassword("password");
sourceConnection=db2ds.getConnection();
For the above two connection I used the jar "db2java.jar"
And i have tried using the JCC driver:
Class.forName("com.ibm.db2.jcc.DB2Driver");
String url="jdbc:db2://hostname:portnumber/databasename";
sourceConnection=DriverManager.getConnection(url,"username","password");
For this connection i have added the below jars
1)db2jcc.jar
2)db2jcc_license_cu.jar
This time around I am getting the below error,
"com.ibm.db2.jcc.am.go: [jcc][t4][201][11237][3.57.82] Connection authorization failure occurred.
Reason: Security mechanism not supported. ERRORCODE=-4214, SQLSTATE=28000"
I tried to connect to the same db2 source using "Quest for DB2" tool and the connection was successful.
Am i missing something in the code and is it a problem with DB2 drivers or connection string?
Can someone please guide me.
Thanks in advance.
Cause:
If the DB2® instance where InfoSphere Optim Performance Manager is running has the authentication configuration parameter set to DATA_ENCRYPT, you cannot log in to the web console.
Resolving the problem:
Do the following steps:
On the DB2 instance where Optim Performance Manager is running, set the authentication configuration parameter to SERVER by issuing the following command:
db2 update dbm cfg using authentication server
Restart the DB2 instance and InfoSphere Optim Performance Manager.
For more details visit here.
Your first two attempts were not supposed to work. You're using the JCC driver URL format, so it wouldn't be valid for either "net" or "app" drivers, which are deprecated anyway.
Use the JCC driver (com.ibm.db2.jcc.DB2Driver) and the URL format of "jdbc:db2://hostname:portnumber/databasename" and see this technote for the solution to the "Security mechanism not supported" problem. In short, you need to use a supported JDK.
I'm curious about something... is it possible for an Oracle 11 instance to be configured so that it does not return any ORA-?????? error messages?
I've issued many invalid queries where I've misspelled column names, table names... things where I would expect an ORA error message.
Say for security purposes say if a stray java stack trace got exposed to a browser could you force oracle to always show the same bogus error message in the stack trace?
I always get this one:java.sql.SQLException: IO Error: Size Data Unit (SDU) mismatch
I've googled that error up and down, and I do not have any connection or database configuration issues at all! I get it on a per-query basis.
Not a direct solution but I was having the same problem with the SDU mismatch masking the real error. I found a link (http://www.rajivnarula.com/blog/2013/03/13/table-not-found-or-error-not-found/) that gave an indirect way to expose the error:
I tried swapping the JDBC driver with the older ojdbc14.jar and voila
! The real error was exposed : Good old
ORA-00942 (table or view does not exist)
Once I put the table in- everything works fine- with ojdbc14.jar as
well ojdbc6.jar
Obviously a pain but useful until someone posts a way to get the underlying error with the newer driver...
Basically your setup is not correct. Either on the client or on the server or on both the sdu size has been set and they do not match between client and server. The sdu size can be set on the client in
the sqlnet.ora file or
in the connect descriptor
On the server it can be set with
in the sqlnet.ora file
the dispatchers init.ora parameter
or the listener.ora file.
If you are still not convinced, trace the tns traffic to verify this. Client side tracing can be enabled by adding the following settings to the sqlnet.ora file:
trace_level_client = 10
trace_unique_client = on
trace_file_client = sqlnet.trc
trace_directory_client = <path_to_trace_dir>
Server side settings can be enabled with the following settings:
trace_level_server = 10
trace_file_server = server.trc
trace_directory_server = <path_to_trace_dir>
If level 10 is not sufficient, set the level to 16. This will create a trace file that you can analyze.
You can try to upgrade the Oracle 11g JDBC driver to a version greater than 11.2.0.3.0, as described here
There is another chance whether the table in the query exists in the database or not. Check for table name in the query or try whether you are trying for Oracle Database using mysql driver