1 – AIJ network send field
This field displays the number of network messages sent.
2 – AIJ network recv field
This field displays the number of network messages received.
3 – Net msg processed field
This field displays the number of network messages processed. This field is only updated on the standby database, and is intended to be used as a comparison against the "AIJ network recv" field.
4 – ____data_field_
This field displays the number of data messages sent to the standby database or received from the master database.
5 – ____control_field_
This field displays the number of control (non-data) messages sent to the standby database or received from the master database.
6 – ____checkpoints_field_
This field displays the number of checkpoint operations performed.
7 – Stall time x100 field
This field displays the network I/O duration, in hundredths of seconds.
8 – blocks_shipped_field
This field displays the number of 512-byte blocks sent.
9 – ______received_field_
This field displays the number of 512-byte blocks received.
10 – Stalled MSN found field
This field displays the number of stalled messages identified.
11 – Network Reconnect field
This field displays the number of times the network connection was lost between the master and standby databases. This statistic only applies to the master database. It could also indicate that the network object server (router) died prematurely.
12 – Free Network Xmit field
This field displays the number of messages that have been sent for "free". That is, a group commit buffer that does not contain any transaction "commit" records can always be transmitted with a synchronization mode of "cold" since no replication of the buffer can be performed on the standby side. This is an indication of master database performance optimization.