Passing of data from different Oracle Clients

Hi
I have old database with Oracle 7i as its client. In this database(GPS system dbase)
I need 3 columns in TABLE_A with almost 50 millions of data.
TABLE_A
dates_in DATE
user VARCHAR2(20)
status VARCHAR2(20)
The database structure for 7i acts as a read only database because were not allow to run any objects there. My objective is that I need to get dynamic data from TABLE_A (updated when there is user that log in the system ) as fast as possible. Ive tried some set up below.
1) I created trigger upon insert in TABLE_A and pass all the data thru dblink to Oracle 8i then to 9i. --Best possible solutions but were not allowed to do this since were not allow to run any objects in Oracle 7i(GPS database).
2) I created view in 8i data coming from TABLE_A thru dblink. Then I created a procedure populating the table in 8i and then jobs that run this procedure every 20seconds. --very slow eventhough I've created index
Any idea from all of you masters??

I need to get the data from TABLE_A in Oracle 7i (GPS database). This data will be used to plot the current position and status of user in GIS map with Oracle 9i client. I need to get the newly inserted data in the TABLE_A(approx 50 records/min is inserted on this regularly)

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Hi,
937440 wrote:
Hi every one, this is my first post in this portal. Welcome to the forum!
Be sure to read the forum FAQ {message:id=9360002}
I want display the details of emp table.. for that I am using this SQL statement.
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