Cause: The amendment method provided is invalid, not public, or cannot be found. Action: Ensure the amendment method is public, static, returns void and has a single argument: Descriptor. Action: Adjust the Java security permissions to permit access to the constructor. Action: Determine which objects are being instantiated, and ensure all are being done properly. Cause: A message send invoked from inside the constructor is invalid because the method does not exist. Cause: A message is being sent to an object from inside a factory instantiation.
Java has determined this message to be illegal. Action: Determine why the message send is illegal, and replace the message with the proper legal one. Action: Determine the faulty target, and replace with the correct target, or proper message send. Cause: Tokens in the builder generated files are the subsets of all the tokens a Project Reader can understand.
Each token has a related public method on TopLink. The exception would mean that the method name is incorrect. Action: If the project files are not manually edited and corrupted then this is usually an internal exception to TopLink and must be reported to Technical Support.
But if the file was manually edited or corrupted then the files must be generated again. Cause: The post load method defined in descriptor properties is not defined on the related domain class. Cause: While creating project class the parameter tokens are read from the file and are converted to actual types before sending them to the methods. An unknown type will cause this exception.
Cause: Java is throwing an illegal access reflection exception while invoking the method on the object. TopLink only wraps that exception. Action: Inspect the internal exception and check the Java manuals. If the project files are not manually edited and corrupted then this is usually an internal exception to TopLink and must be reported to Technical Support.
Cause: Java is throwing an invocation reflection exception while invoking the method on the object. Cause: Java is throwing an invalid argument reflection exception while invoking the method on the object. Cause: Java is throwing reflection exception while invoking the method on the object. Cause: The number of parameters for the token read from the project or descriptor file do not match the number of parameters a related method can take.
Cause: The parameter read from the file cannot be converted to a appropriate type. Action: Check that the path was given correctly in a project reader and also the path is correct in project file. This is untested and undocumented feature. Cause: Existence checking string specified on the descriptor is not understood. Cause: If the line in an INI file is incomplete, i. Cause: Could not write into the file. Cause: Java is throwing reflection exception while instantiating the object.
Should return a string. Cause: An error occurred during an attempt to cast using the castString. Cause: In a multi threaded environment one of the waiting thread was interrupted. Action: Usually such exceptions would mean restarting the application but it is totally dependent on the application. Cause: Wait failure on ServerSession. When the number of non-pooled connections reach the threshold any more requests for such connection results in wait until some one releases the connection resource.
If this wait was interrupted then an exception is thrown. Cause: Wait failure on ClientSession. When the number of pooled connections reach the threshold any more requests for such connection results in wait until some one releases the connection resource. Cause: A signal was attempted before wait on concurrency manager. This normally means that an attempt was made to commit or rollback a transaction before it was started, or to rollback a transaction twice.
The object cannot be converted to given type. Cause: The String object must be of even length to be converted to a ByteArray. This object could not be converted to a ByteArray. Cause: Session is not connected to the database while doing reading or writing on the database.
Action: An application may have to login again because the connection to the database might have been lost. Cause: Error reading blob data from the database. There are two possibilities for this exception, first is that the blob data was not read properly from the result set or the TopLink could not process the blob data using ByteArrayOutputStream. Action: Check if the underlying driver support blobs properly or not and if it does then report this problem to Technical Support.
Cause: Could not convert object type on internal error. The object from the result set cannot be converted to the type returned from the metadata information. Action: Check if the underlying driver support the conversion type properly or not and if it does then report this problem to Technical Support.
Cause: An attempt has been made to logout while the transaction is still in progress. You cannot logout while a transaction is in progress. Cause: The sequence information given to TopLink is not sufficiently complete to get the set of sequence numbers from the database. This usually happens on native sequencing on oracle database. Cause: Error preallocating sequence numbers on the database; the sequence table information is not complete.
Action: Check if the sequence table was created on the database properly or not. When the TopLink Session is configured with an ExternalTransactionController , any unit of work requested by a client must operate within the context of a JTS external global transaction.
When a unit of work is created and the external global transaction is not in existence or if the system cannot acquire a reference to it, this error is reported. Action: Ensure that a JTS transaction is in progress before acquiring the unit of work. When the TopLink Session is configured with an ExternalTransactionController , any unit of work requested by a client must operate within the context of a JTS external global transaction see Error code: The JTS specification does not support the concept of "checkpointing" a transaction, that is, committing the work done and then continuing to work within the same transaction context JTS does not support nested transactions, either.
Thus, if client code invokes commitAndResume on a "synchronized" unit of work, this error will be reported. Cause: Configuration error. Could not instantiate driver. This object either was never read or has already been deleted. Action: Logging SQL is very helpful in understanding the reason why the exception is thrown.
The last delete will show the object we are deleting that throws an exception. Cause: The object state has changed in the database. This usually means that the row in the table was changed by some other application. Action: Refreshing an object will refresh the object with the new data from the database.
It may not have been read before being updated or has been deleted. The last update will show the object we are updating that throws an exception. The mapping was not defined for the locking field. It is needed when the lock value is stored in the domain object than in a cache. Cause: A write lock value which is stored in a domain object is not an instance of java. Action: Change the value of the attribute to be an instance of java.
Cause: Cursored SQL queries must provide an additional query to retrieve the size of the result set. Custom queries using cursor streams and not specifying the size query will cause this exception. The size query is used to retrieve the size of the number of object read from the database. This is done on JDBC 1. Non custom queries using cursor streams will have default queries generated by TopLink. Cause: Aggregated objects cannot be written or deleted independent of their owners.
There is no identity maintained on such objects. Cause: The number of arguments provided to the query for execution does not match the number of arguments provided with the query definition. The object was never registered in this unit of work but read from the parent session and related to an object registered in the unit of work.
Action: Ensure that you are correctly registering your objects. If you are still having problems, you can use the UnitOfWork. Please see the manual and FAQ for more information. The unit of work clones registered new objects, so you must ensure that it is registered before it is reference by another object. If you do not want the new object to be cloned, used the U nitOfWork. Cause: This mapping does not support batch reading. The optimization of batching the read of all the target rows is not supported for the mapping.
Action: The problem is a TopLink development problem and user should never encounter this unless the mapping is a new custom mapping. Contact Technical Support. The descriptor related to the class or the object is not found in the session. Action: Check if the related descriptor was added to the session or the query is done on the right object or class.
The descriptor where named query is defined is not added to the session. Action: Check if the related descriptor was added to the session or the query is done on the right class.
Cause: The size query given on the queries returning cursor streams is not correct. The execution of the size query did not return any size. Action: If the cursor stream query was custom query than check the size query specified else report this problem to Technical Support. Cause: Objects cannot be written in unit of work using modify queries, they must be registered. Action: Objects are registered in the unit of work and during commit unit of work will do the required changes to the database.
Usually this happens because of mis-spelled query key. Action: Check the query key specified in the expression and make sure that a query key was added to the descriptor. Cause: Objects and the database cannot be changed through the server session; all changes must be done through a client session's unit of work. The objects cannot be changed on the server session by modifying queries. Objects are changed in the client sessions acquired from this server session.
Cause: No concrete class indicated for the type in this row. The type indicator read from the database row has no entry in the type indicator hashtable or if class extraction method was used, it did not return any concrete class type.
The exception is thrown when sub classes are being read. Action: Check class extraction method if specified or check the descriptor to see if all the type indicator values were specified or not. Cause: No cursor support provided for abstract class multiple table descriptors using expressions.
Action: Consider using custom SQL or multiple queries. Cause: There are no fields to be insert into the table. You must define at least one mapping for this table.
Cause: Query is not defined. When executing query on the session the parameter which takes query is null. Action: The unit of work, once released, cannot be reused unless commitAndResume is called. Cause: An attempt has been made to read from the cursor streams beyond its limits beyond the end of the stream.
Action: Ensure the stream is being checked for an "end of stream" condition before attempting to retrieve more objects. Cause: The reference class in the query is not specified. A reference class must be provided. Cause: Refresh is not possible if caching is not set. The read queries which skip cache to read objects cannot be used to do refresh the object. Refreshing is not possible without identity. Cause: Did not find size query. Size only supported on expression queries, unless a size query is given.
Cause: The SQL statement has not been properly set. The user should never encounter this unless queries have been customized. Cause: Data read and data modify queries is being executed without the session name. Only object-level queries can be directly executed by the session broker, unless the query is named. Action: Session broker has no idea about such queries about which session to execute the query on.
Specify the session name. The report query result returned is without primary key values. An object from the result can only be created only if primary keys were also read.
Action: Check documentation on retrievePriamryKeys on report query. Action: Check session if the descriptor was added or not or else check class extraction method.
Cause: Cannot delete an object of read-only class. Thrown in unit of work when trying to delete an object that is marked as read only. Action: Check ExpressionOperator class to see a list of all of the operators supported. This is a TopLink development exception that users should not encounter. Cause: The number of attributes requested does not match the attributes returned from the database in report query. This usually happens if one gives custom query on the report query.
Action: Check the custom query if it is specified or report this problem to Technical Support. Cause: Partial Objects are never put in the cache. Another user experienced a similar problem: upgraded kernel, vmware tools stopped working.
Rebuilt the kernel with vmware tools, still not working. So I reinstalled Centos 7. I had no problem until I resized the disk with a gparted live cd. I'm not sure if the problem is related to that. When running. Maybe it has something to do with this issue. Logs below. I've also noticed that when closing window there is a significant delay in reaction, I believe this is caused by the 0. The speed of loading web pages is now fine. I used the same application almost a month ago and there was no problem.
After a month, I suddenly couldn't open it. After thinking about it, I seem to have updated the driver of Nvidia, and after checking the Internet, I confirmed that there is indeed a bit inoperability problem on Steam , os I tried the solutions on the Internet.
After the unexpected success, I think I must record it, I am afraid that this problem will happen again, but I will not have the confidence to find the answer next time.
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