Re: Newbee with questions about physical and logical log allocations.
Posted in 1996
The number supplied is good. All log files get created and are used in a round robin fashion. On Fri, 12 Jan 1996, Jim Turney wrote: } Does anybody have a good rule-of-thumb calculating the size of the } physical and logical log sizes. } } Informix said the total physical and logical logs size should be 20% } of the total dbspace dedicated to online. } Informix also indicates that the ratio of logical to physical logs } size should be 3 to 1. } } What informix does tell you is how to arrive at the number of LOGFILES } to be managed by informix. } } I know informix needs at least 3 logicals logs to perform log } rotation, so if LOGFILES is set to 10 does informix attempt to } allocate 10 logfiles of X LOGSIZE in side the root dbspace or does } it allocate them dynamically when needed. } } I need this info to get a handle on how much raw disk space to } dedicate to the root dbspace. } } } } } } } }