IsolationLevel Property - ADO

Indicates the level of isolation for a Connection object.

Applies To

Connection

Required Files

msado15.dll
VC: adoint.h, adoid.h

Settings and Return Values

Sets or returns one of the following IsolationLevelEnum values:

Constant Value Description
adXactUnspecified -1 If the provider is using a different IsolationLevel than specified but which one cannot be determined, the property returns this value.
adXactChaos 16 Indicates that you cannot overwrite pending changes from more highly isolated transactions.
adXactBrowse 256 Indicates that from one transaction you can view uncommitted changes in other transactions.
adXactReadUncommitted 256 Same as adXactBrowse.
adXactCursorStability 4096 Indicates that from one transaction you can view changes in other transactions only after they've been committed. (Default.)
adXactReadCommitted 4096 Same as adXactCursorStability.
adXactRepeatableRead 65536 Indicates that from one transaction you cannot see changes made in other transactions, but that requerying can bring new recordsets.
adXactIsolated 1048576 Indicates that transactions are conducted in isolation of other transactions.
adXactSerializable 1048576 Same as adXactIsolated.

Remarks

Use the IsolationLevel property to set the isolation level of a Connection object. The IsolationLevel property is read/write. The setting does not take effect until the next time you call the BeginTrans method. If the level of isolation you request is unavailable, the provider may return the next greater level of isolation.

Examples

IsolationLevel, Mode Properties Example (VB)

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