Pretty stringent. They want as little latency as possible. Changes at a master should be available to all sites ASAP. Now, they could all go to one central site, and thats ok as long as our networking is healthy, but if it goes down, there is a requirement that they be able to work independently (there are 4-5 sites) and then all changes need to be synchronized. Data loss is secondary to availability however.
These requirements smack of trouble to me. Robert G. Freeman - Oracle8i OCP Oracle DBA Technical Lead CSX Midtier Database Administration The Cigarette Smoking Man: Anyone who can appease a man's conscience can take his freedom away from him. -----Original Message----- Sent: Monday, March 25, 2002 11:48 AM To: Multiple recipients of list ORACLE-L What type of requirement or SLA do you have in regards to keeping the instances in sync? -Joe --- "Freeman, Robert " <[EMAIL PROTECTED]> wrote: > Stand-by (Oracle9i Data Guard) vs. Replication > > Folks, > > I have a mission critical system we are architectonic right now. > There is some argument of the merits of replication vs. using > Standby database going on. > > Current we have 4 sites that we will be replicating data back and > forth between. There are 3 kinds of data: > > 1. Network Critical data (must be available for entire network) > 2. Regional Critical data (only used for a given region. site = > region). > 3. Regional non-critical data (this is data that is easily > recovered from > other operational data stores). > > I can load you up with details, but for now this is the general > requirement. We want a given site to be able to work independently > of the other sites in the event of network failure (WAN). > > What I'm looking for is your experience with using replication > for HA solutions vs. stand-by databases. I've also considered using > standby databases as a possible solution to this problem, along > with > using transportable tablespaces to re-sync the databases once > everything > comes up. I'm concerned with replication in that there is allot to > break, > and I'm concerned about synchronization issues in general with > either > solution. > > Thoughts? > > RF > > > Robert G. Freeman - Oracle8i OCP > Oracle DBA Technical Lead > CSX Midtier Database Administration > > The Cigarette Smoking Man: Anyone who can appease a man's > conscience can > take his freedom away from him. > > > -- > Please see the official ORACLE-L FAQ: http://www.orafaq.com > -- > Author: Freeman, Robert > INET: [EMAIL PROTECTED] > > Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051 > San Diego, California -- Public Internet access / Mailing > Lists > -------------------------------------------------------------------- > To REMOVE yourself from this mailing list, send an E-Mail message > to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in > the message BODY, include a line containing: UNSUB ORACLE-L > (or the name of mailing list you want to be removed from). You may > also send the HELP command for other information (like subscribing). __________________________________________________ Do You Yahoo!? Yahoo! Movies - coverage of the 74th Academy Awards® http://movies.yahoo.com/ -- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: Joe Raube INET: [EMAIL PROTECTED] Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051 San Diego, California -- Public Internet access / Mailing Lists -------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing). -- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: Freeman, Robert INET: [EMAIL PROTECTED] Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051 San Diego, California -- Public Internet access / Mailing Lists -------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing).
