| OCR Text |
Show 87 Tlw situat ion gets worse in a di stributed set t ing where t he logging su bsystem is d istri lJ ttted lwtween t he cli ent and t he S<~ r ve r . This leads to a lot of network t raffic a.nd brings th f' perform ance clown . /\ !so, the p hys ical OIDs lead to p roblems 111 object movement (whi ch can also occur on increasing the object size) . Among a ll POSs, ObSe rver provides the greatest amount of fl exib ili ty to the apf.>licat ions. It is, however, not very robust , needs per forrn a nce t uning, and has a very clumsy in terface . Apart from t hese p roblems, it bas some very good features, li kC' its un convcnt ionCJ.I locking and n o n -sc r i al i zn.bl <~ interact ions. Postgres is quite robust and V<~ ry easy to use. Using it as a language neutral I' OS is nol <t ve ry good id<-'d in Lrrms of· p<" rCo rma.nc<". Its qlt f' ry capabili ty is very <'Xp<'usive, it docs 110t h<\ ve a bi na ry interface for small objects (obj ects less than i'l i\B ), a nd its OlD support is not useful. Another prob lem is t hat it uses standard two phase locking where the locking granulari ty is a relat ion . This severely rest ricts COIJCU fTC II C.)'. |
