SAIsolationLevel enumeration

Specifies SQL Anywhere isolation levels. This class augments the [external link] IsolationLevel.

Syntax 
Visual Basic

Public Enum SAIsolationLevel 
C#

public enum SAIsolationLevel
Remarks

The SQL Anywhere .NET Data Provider supports all SQL Anywhere isolation levels, including the snapshot isolation levels. To use snapshot isolation, specify one of SAIsolationLevel.Snapshot, SAIsolationLevel.ReadOnlySnapshot, or SAIsolationLevel.StatementSnapshot as the parameter to BeginTransaction. BeginTransaction has been overloaded so it can take either an IsolationLevel or an SAIsolationLevel. The values in the two enumerations are the same, except for ReadOnlySnapshot and StatementS napshot which exist only in SAIsolationLevel. There is a new property in SATransaction called SAIsolationLevel that gets the SAIsolationLevel.

For more information, see Snapshot isolation.

Members
Member name Description Value

Chaos

This isolation level is unsupported.

 16

ReadCommitted

Sets the behavior to be equivalent to isolation level 1.

 4096

ReadOnlySnapshot

For read-only statements, use a snapshot of committed data from the time when the first row is read from the database.

 16777217

ReadUncommitted

Sets the behavior to be equivalent to isolation level 0.

 256

RepeatableRead

Sets the behavior to be equivalent to isolation level 2.

 65536

Serializable

Sets the behavior to be equivalent to isolation level 3.

 1048576

Snapshot

Uses a snapshot of committed data from the time when the first row is read, inserted, updated, or deleted by the transaction.

 16777216

StatementSnapshot

Use a snapshot of committed data from the time when the first row is read by the statement. Each statement within the transaction sees a snapshot of data from a different time.

16777218

Unspecified

This isolation level is unsupported.

 -1
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