Ict.Common.DB.Exceptions Namespace Reference

Classes
class	EDBAccessLackingCoordinationException
	Thrown in case a caller wants to run an action against the DB, but that isn't possible as another action that was started earlier prevents that - this means that the DB access isn't co-ordinated (but it would need to be!). More...
class	EDBAttemptingToCloseDBConnectionThatGotEstablishedOnDifferentThreadException
	Thrown in case a caller wants to close a DB Connection when there is still a Transaction running - which the act of closing of the DB Connection would roll back - and that DB Transaction was started on another Thread (running DB commands on different Threads on the same DB Connection isn't supported as the ADO.NET providers (specifically: the PostgreSQL provider, Npgsql) aren't thread-safe!). More...
class	EDBAttemptingToCreateCommandEnlistedInDifferentDBTransactionThanTheCurrentDBTransactionException
	Thrown in case a caller wants to create a Command that would be enlisted in a DB Transaction that is different from the current DB Transaction (running DB Commands on a DB Transaction other than the currently running DB Transaction is not supported [because parallel DB Transactions are not supported]). More...
class	EDBAttemptingToCreateCommandOnDifferentDBConnectionThanTheDBConnectionOfOfTheDBTransactionThatGotPassedException
	Thrown in case a caller wants to create a Command that would be enlisted in a DB Transaction that was started against a DB Connection that is different from the DB Connection of current DB Connection (running DB Commands on one DB Connection with a DB Transaction that was started against another DB Connection isn't supported [because each DB Command is bound to a certain DB Connection as the ADO.NET providers {specifically: the PostgreSQL provider, Npgsql} aren't thread-safe!}]). More...
class	EDBAttemptingToCreateCommandThatWouldRunCommandOnDifferentThreadThanThreadOfTheTransactionThatGotPassedException
	Thrown in case a caller wants to create a Command that would be executed on a Thread that is different from the Thread that started the DB Transaction that got passed in as an Argument (running DB commands on different Threads in the same DB Transaction [and hence on the same DB Connection] isn't supported as the ADO.NET providers [specifically: the PostgreSQL provider, Npgsql] aren't thread-safe!) More...
class	EDBAttemptingToUseTransactionThatIsInvalidException
	Thrown in case a caller wants to use a DB Transaction and that DB Transaction is no longer Valid (i.e. that DB Transaction has already been Committed or Rolled Back). More...
class	EDBAttemptingToWorkWithTransactionThatGotStartedOnDifferentThreadException
	Thrown in case a caller wants to work with a Transaction and that DB Transaction was started on another Thread (running DB commands on different Threads in the same DB Transaction [and hence on the same DB Connection] isn't supported!). More...
class	EDBAutoServerCallRetriesExceededException
	Thrown when co-ordinated (=Thread-safe) DB Access was requested, but the DB Abstraction layer was busy executing another request, and the waiting time for the request for which this Exception got thrown was exceeded. The request for which this Exception got thrown didn't get executed because of this. More...
class	EDBConnectionBrokenException
	Thrown if the DB Connection was found to be broken in the 'BeginTransaction' Methods (determined with a call to Method 'TExceptionHandler.IsExceptionCausedByUnavailableDBConnectionServerSide') AND the the one retry attempt to re-establish the broken DB Connection in those Methods didn't overcome the situation. More...
class	EDBConnectionIsAlreadyOpenException
	Thrown if an attempt to create a DB connection failed because the DB connection was already established earlier. More...
class	EDBConnectionNotAvailableException
	Thrown if the DB connection is not able to execute any SQL commands. More...
class	EDBConnectionNotEstablishedException
	Thrown if an attempt to create a DB connection failed. More...
class	EDBConnectionWasAlreadyEstablishedException
	Thrown if an attempt to create a DB connection failed because the DB connection was already established earlier. More...
class	EDBCoordinatedDBAccessWaitingTimeExceededException
	Thrown when co-ordinated (=Thread-safe) DB Access was requested, but the DB Abstraction layer was busy executing another request, and the waiting time for the request for which this Exception got thrown was exceeded. The request for which this Exception got thrown didn't get executed because of this. More...
class	EDBNullTransactionException
	Thrown if a transaction is expected on a DB connection but the current transaction is null. More...
class	EDBParameterisedQueryMissingParameterPlaceholdersException
	Thrown if a SQL command should execute a parameterised query, but parameter placeholders were missing in the query string. More...
class	EDBSyncUnknownParameterTypeException
	Thrown during the write to the Sync table, where the ODBC parameters need to be written to a string for the PostgreSQL database. More...
class	EDBTransactionBusyException
	Thrown in case a caller wants to start a new Transaction by calling BeginTransaction, but a Transaction is currently executing (parallel Transactions are not supported by ADO.NET!). More...
class	EDBTransactionIsolationLevelTooLowException
	Thrown in case code wants to use a Transaction with a certain IsolationLevel, but the Transaction it is using has an IsolationLevel that is lower than it expects. More...
class	EDBTransactionIsolationLevelWrongException
	Thrown in case code wants to use a Transaction with a certain IsolationLevel, but the Transaction it is using has a different IsolationLevel than it expects. More...
class	EDBTransactionMissingException
	Thrown in case code wants to run an SQL query without a transaction. This would give problems with the Progress SQL engine, with locking. Progress SQL requires all SQL queries to be in a transaction. More...
class	EDBTransactionSerialisationException
	Thrown during a serializable transaction if another concurrent transaction has messed with the same records for the PostgreSQL database. More...
class	EDBUnsupportedDBUpgradeException
	Thrown if an upgrade of the DB to a newer version of OpenPetra cannot be done. More...
class	TDBExceptionHelper
	Static helper class for DB Exceptions More...