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My SQL : The Binary Log - Binary Log Management |
The events mentioned thus far are information carriers in the sense that they represent some real change of data that occurred on the master. There are, however, other events that can affect replication but do not represent any change of data on the master. |
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SQL Server 2008 R2 : Database Snapshots - What Are Database Snapshots? |
A database snapshot is simply a point-in-time full database view. It’s not a copy—at least not a full copy when it is originally created. We talk about this more in a moment. Figure 1 shows conceptually how a database snapshot can be created from a source database on a single SQL Server instance. |
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SQL Server 2008 R2 : Long-Running Transactions |
As you have already seen, transaction information is recorded in each database’s transaction log. However, long-running transactions can be a cause of consternation to a system administrator who is attempting to back up and prune the transaction log. Only the inactive portion of the log can be truncated during this operation. |
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