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Transaction's behavior
Message
From
24/06/1999 09:45:16
 
 
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General information
Forum:
Visual FoxPro
Category:
Databases,Tables, Views, Indexing and SQL syntax
Title:
Transaction's behavior
Miscellaneous
Thread ID:
00233467
Message ID:
00233467
Views:
44
1 / CONFIGURATION

Personal computer "PC1" WITH DRIVE C:\
Personal computer "PC2" WITH DRIVE C:\

ON "PC2" , I MAP "PC1\C:\" with letter P:\


ON PC1 drive C , I have a database , called "mydbc" ;

In "mydbc" , I have a table, called "mytable" ;

In "mytable" , I have at least one field, called "myfield" ;

In "mydbc", I also have a view, called "myview" , build on "mytable" .


2 / CODE THAT GIVES PROBLEM

2a / FIRST PART

On "PC1" , Nancy executes following code

10 OPEN DATA C:\mydbc.dbc

20 USE myview && view in row buffering

30 REQUERY() && all records are extracted

40 REPLACE myfield WITH "news1" && first record

50 BEGIN TRANSACTION

60 TABLEUPDATE(0,.F.)

70 SUSPEND

80 END TRANSACTION

90 CLOSE ALL

Thanks line 70 , Nancy has time to go on PC2

She executes following code

10 OPEN DATA P:\mydbc.dbc

20 USE mytable

30 BROWSE

She tries to change data on the first record of mytable
She can not ; First record is locked ;

If she tries to change data on any other record, she gets following message
"Record not available … Please wait …"

She goes back on PC1, executes command <> and comes back on PC2
She notices that message has disappeard

2b / SECOND PART

Nancy executes then all the code here above a second time with
another view build on another table
But with this second table, she gets no more the message
"Record not available … Please wait …"


3 / MY QUESTION

In first part, everything looks like mytable was during the transaction in FILE LOCKING

In second part, everything looks like the table was during the transaction in RECORD LOCKING

Which parameter can change the behavior of visual foxpro ?????
(An update trigger ,….??? )

Did someone already meet the same thing ???
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