Buffer Cache
Help, have recently upgraded from 6.5 to 7.0 and have come across a problem with performance. The problem appears to relate to the buffer cache being flushed, the buffer cache hit ratio drops from 98% to 0% in a matter of a second. It then very slowly grows, then is flushed again, then increase slowly upto 30%.
Does any one have any ideas as to what would flush the buffer cache?
Any comments would be much appreciated - cheers
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I’m running into a problem when I try to convert some of our clob fields to character strings to display on a Powebuilder report. I’m using the function dbms_lob to convert, as in: Select dbms_lob.substr(d.notes,32767,1) from myreport d 32,767 is the maximum string size this function can handle, and the sql statement is crashing with a “character string buffer too small” error when it encounters a really big report. How can I get around this?
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