FirstMessage

Retrieves the first message that is available and matches the search criteria. This resets the position to the beginning of the queue.

FirstMessageMultiGroup

Indicates that a call to DequeueArray resets the position to the beginning of the queue, and dequeues messages that are available and match the search criteria. Messages are dequeued till the dequeueCount limit is reached. The dequeued messages can belong to different transaction groups.

You can use the OracleAQMessage.TransactionGroup property to distinguish between messages from different transaction groups. All messages from the same transaction group have the same value for the OracleAQMessage.TransactionGroup property.

NextMessage

Retrieves the next message that is available and matches the search criteria. If the previous message belongs to a message group, AQ retrieves the next available message that matches the search criteria and belongs to the message group.

NextMessageMultiGroup

Indicates that a call to DequeueArray dequeues the next set of messages that are available and match the search criteria. Messages are dequeued till the dequeueCount limit is reached. The dequeued messages can belong to different transaction groups.

You can use the OracleAQMessage.TransactionGroup property to distinguish between messages from different transaction groups. All messages from the same transaction group have the same value for the OracleAQMessage.TransactionGroup property.

NextTransaction

Skips the remainder of the current transaction group (if any) and retrieves the first message of the next transaction group.

Assembly

Oracle.DataAccess.dll

Namespace

Oracle.DataAccess.Client

.NET Framework

3.5, 4.5, 4.6, 4.7