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The MQ_OPEN BIF opens a message queue and returns a queue handle.

No	Type	Required Optional	Description	Min Length	Max Length
1	A	Required	Connection Handle.	4	4
2	A	Required	Queue Name.	48	48
3	A	Required	Open Mode.	10	10

No	Type	Required Optional	Description	Min Length	Max Length
1	A	Required	Status.	20	20
2	A	Required	Message.	1	256
3	A	Required	Queue Handle.	4	4

The queue can be opened in several modes.

Mode	MQSeries API options
*BLANKS	MQOO_INPUT_AS_Q_DEF MQOO_FAIL_IF_QUIESCING
I	MQOO_INPUT_AS_Q_DEF
Q	MQOO_INQUIRE
IQ	MQOO_INPUT_AS_Q_DEF MQOO_INQUIRE
IF	MQOO_INPUT_AS_Q_DEF MQOO_FAIL_IF_QUIESCING
IQF	MQOO_INPUT_AS_Q_DEF MQOO_INQUIRE MQOO_FAIL_IF_QUIESCING
O	MQOO_OUTPUT
OF	MQOO_OUTPUT MQOO_FAIL_IF_QUIESCING
OU	MQOO_OUTPUT MQOO_SET_IDENTITY_CONTEXT
OFU	MQOO_OUTPUT MQOO_FAIL_IF_QUIESCING MQOO_SET_IDENTITY_CONTEXT
IO	MQOO_INPUT_AS_Q_DEF MQOO_OUTPUT
IOF	MQOO_INPUT_AS_Q_DEF MQOO_OUTPUT MQOO_FAIL_IF_QUIESCING
IOFU	MQOO_INPUT_AS_Q_DEF MQOO_OUTPUT MQOO_FAIL_IF_QUIESCING MQOO_SET_IDENTITY_CONTEXT