Oracle7 Server Tuning

Reallocating Memory

After resizing your Oracle memory structures, re-evaluate the performance of the library cache, the data dictionary cache, and the buffer cache. If you have reduced the memory consumption of any one of these structures, you may want to allocate more memory to another structure. For example, if you have reduced the size of your buffer cache, you may now want to take advantage of the additional available memory by using it for the library cache.

Tune your operating system again. Resizing Oracle memory structures may have changed Oracle memory requirements. In particular, be sure paging and swapping is not excessive. For example, if the size of the data dictionary cache or the buffer cache has increased, the SGA may be too large to fit into main memory. In this case, the SGA could be paged or swapped .

While reallocating memory, you may determine that the optimum size of Oracle memory structures requires more memory than your operating system can provide. In this case, you may improve performance even further by adding more memory to your computer.