TDBXErrorCodes Class

Error codes for dbExpress framework (TDBX) exceptions

Pascal

TDBXErrorCodes = class;

C++

class TDBXErrorCodes;

File

DBXCommon

Description

In general, methods in the dbExpress framework (TDBX) raise exceptions rather than return error codes. This class encapsulates the error codes for the standard exceptions.

This table contains the standard error codes for TDBX exceptions.

Constant	Description
None	Successful completion.
Warning	Non fatal warning. Currently unused.
NoMemory	Insufficient memory to complete the operation.
UnsupportedFieldType	Field type is not supported by this driver.
InvalidHandle	Unexpected internal error. Occurs if attempting to use a TDBX Object such as a connection, command, or reader that is already closed.
NotSupported	Unsupported feature for the driver in use. Typically caused by unsupported metadata related requests.
InvalidTime	Invalid value for a TDBXDataTypes.TIME field.
InvalidType	Invalid value read operation attempted for a TDBXReader or a TDBXParameter field. Use a get method of the correct type for this field.
InvalidOrdinal	Ordinal used to access a TDBXReader column or a TDBXParameter is out of range.
InvalidParameter	Invalid use of a parameter. Common causes of this error include: 1) Parameter already bound. 2) TDBXParameterDirections setting used is not supported by this driver.
EOF	Used internally by DBXDynalink drivers to indicate that a TDBXReader has no more rows.
ParameterNotSet	One or more parameters for a TDBXCommand has not been set.
InvalidUserOrPassword	User name or password provided for a TDBXConnection is not valid.
InvalidPrecision	Attempt to set a TDBXParameter with an invalid precision or read a value with a TDBXDataTypes value that is not large enough.
InvalidLength	Unexpected error. Insufficient storage provided to retrieve a TDBXParameter value.
InvalidIsolationLevel	TDBXIsolations level used is not valid for this driver.
InvalidTransactionId	Unexpected internal error. Transaction id is either expired or invalid.
DuplicateTransactionId	Unexpected internal error. Transaction id is already in use by an active transaction.
DriverRestricted	This driver is not available for the Delphi SKU purchased.
TransactionActive	Operation cannot be completed with a transaction active for the TDBXConnection.
MultipleTransactionNotEnabled	Support for multiple transactions is not enabled for this driver.
ConnectionFailed	TDBXConnection.Open connect operation failed.
DriverInitFailed	Driver could not be properly initialized. Client library may be missing, installed improperly, have the wrong version.
OptimisticLockFailed	Optimistic lock failed. Oracle driver return this error: "OCI-21700: object does not exist or is marked for delete".
InvalidReference	Unexpected internal error accessing an Oracle REF object.
NoTable	Unexpected internal error accessing an Oracle REF object.
MissingParameterMarker	Parameterized query is missing a '?' parameter marker.
NotImplemented	Feature not implemented.
DriverIncompatible	Deprecated. Driver is not compatible with version of VCL data access components in use.
InvalidArgument	Argument used for an operation is invalid.
InvalidOperation	Attempted operation is invalid.
NoData	Used internally by DBXDynalink drivers. Not an error. Indicates either there are no more rows for a TDBXReader or there is no more data when reading blob fields.
MaxCommonErrors	Max common errors.
VendorError	Vendor specific error.