MAA - Oracle 10gR2 Redo Transport and Network Best Practices
MAA - Oracle 10gR2 Redo Transport and Network Best Practices
MAA - Oracle 10gR2 Redo Transport and Network Best Practices
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Maximum Availability Architecture<br />
Figure 6: Graph Showing Read-Only <strong>and</strong> Read/Write Primary Database Workload<br />
Transactions per Second<br />
The second stage of the testing relocates the read-only workload to the Active Data<br />
Guard st<strong>and</strong>by database. All 100 users performing the read-only workload are<br />
transitioned to the read-only st<strong>and</strong>by by relocating the service.<br />
Once relocated, the workload on the production host drops from running at 100%<br />
capacity to just 60% of capacity.<br />
Figure 7: Graph Showing Read-Only Workload on the Active Data Guard St<strong>and</strong>by<br />
Transactions per Second<br />
1800<br />
1600<br />
1400<br />
1200<br />
1000<br />
800<br />
600<br />
400<br />
200<br />
0<br />
1800<br />
1600<br />
1400<br />
1200<br />
1000<br />
800<br />
600<br />
400<br />
200<br />
0<br />
480<br />
1680<br />
All Workload on Primary<br />
640<br />
Primary St<strong>and</strong>by<br />
Read Only Transitioned to St<strong>and</strong>by<br />
Primary St<strong>and</strong>by<br />
Due to the increased resources available at the production host, the read/write<br />
users connected to the primary database can increase their transactions per second<br />
by over 250%. Similarly, the read-only users are no longer in contention for<br />
<strong>Oracle</strong> Active Data Guard: <strong>Oracle</strong> Data Guard 11g Page 19<br />
1380<br />
Read /Write<br />
Read Only<br />
Read /Write<br />
Read Only
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