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# lrt_tx_set_transaction_control

Transaction Handling Functions

Sets the transaction_control characteristics.

int lrt_tx_set_transaction_control( TRANSACTION_CONTROL control );

control | Value for the transaction control characteristic. Valid values: TX_UNCHAINED - indicates that lrt_tx_commit and lrt_tx_rollback should not start a new transaction before returning to their caller TX_CHAINED - indicates that lrt_tx_commit and lrt_tx_rollback should start a new transaction before returning to their caller

The lrt_tx_set_transaction_controlfunction sets the transaction_control characteristics to the value specified in control.

## Return Values

If the function succeeds, it returns a non-negative value, TX_OK. If it fails, it doesn't modify the value of TRANSACTION_CONTROL and it returns a negative value.

## Parameterization

You cannot use standard parameterization for any arguments in this function.

## Example

In the following example, the lrt_tx_set_transaction_control function sets the transaction control to unchained mode.

Copy code

    TXINFO txinfo;
    lrt_tx_open(); // open resource managers
    lrt_tx_set_transaction_timeout(30); // 30 second transaction timeout
    lrt_tx_begin();     // start transaction
    lrt_tx_set_commit_return(TX_COMMIT_COMPLETED);
    // 2-phase commit
    lrt_tx_set_transaction_control(TX_UNCHAINED); // unchained transaction mode
    lrt_tx_commit();
    // commit transaction
    lrt_tx_begin();
    // start another transaction
    lrt_tx_info(&txinfo);
    lrt_tx_rollback();
    // abort it
    lrt_tx_close();
    // close resource managers

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