今天测试一下sqlplus中arrayseize参数以及consistent gets。1。建立测试例子:create table t as select*from all_objects;2.设置不同的arraysize大小N,从2,5,10,20,50,100,200,400,500,1000,2000,5000.测试需要...
db block gets:Number of times a CURRENT block was requested.consistent gets:Number of times a consistent read was requested for a block.physical reads:Total number of data blocks read from disk....
making it inconsistent.If you use CONSISTENT=Y and the volume of updates is large,the rollback segment will be large.In addition,the export of each table will be slower because the rollback segment ...
So,lots of things can happen here.First,Oracle will look in the buffer cache for a CR(consistent read)buffer of the block that's consistent w/the requested SCN.It may find it,if it does,that's counted...
NAME VALUE-consistent gets 39(+2)consistent gets from cache 39(+2)consistent gets from cache(fastpath)34(+1)consistent gets-examination 4(+0)consistent gets direct 0-与10g一样,不过11G增加一个...
Creates a consistent snapshot by dumping all tables in a single transaction.Works ONLY for tables stored in storage engines which support multiversioning(currently only InnoDB does);the dump is NOT ...
Consistent Gets:Number of times a consistent read was requested for a block.This is how many blocks you processed in"consistent read"mode.This will include counts of blocks read from the rollback ...
a consistent and holistic user experience for SAP software.By creating visually pleasing designs with a strong focus on ease of use,the experience is intuitive and simple,across all devices.With ...
Given a list of phone numbers,determine if it is consistent in the sense that no number is the prefix of another.Let’s say the phone catalogue listed these numbers: 1.Emergency 911 2.Alice 97 625 999...