AW: AW: Replication Questions
Hello Linos, If i not manually deactivate the units but i have a power failure and i have to reboot a server involved in the replication, do i have to manually activate the sync or it will be activated on reboot if i launch the messageserver and syncservice automatically, i can lost many data if i have to activate this manually after hardware/so failure. It should be sufficient if you restart the messageserver and syncservices. Regards Wolfgang Wolfgang Auer Developer MaxDBliveCache SAP AG mailto:[EMAIL PROTECTED] http://www.sap.com Sitz der Gesellschaft/Registered Office: Walldorf, Germany Vorstand/SAP Executive Board: Henning Kagermann (Sprecher/CEO), Léo Apotheker (stellvertretender Sprecher/Deputy CEO), Werner Brandt, Claus Heinrich, Gerhard Oswald, Peter Zencke Vorsitzender des Aufsichtsrats/Chairperson of the SAP Supervisory Board: Hasso Plattner Registergericht/Commercial Register Mannheim No HRB 350269 Diese E-Mail kann Betriebs- oder Geschäftsgeheimnisse oder sonstige vertrauliche Informationen enthalten. Sollten Sie diese E-Mail irrtümlich erhalten haben, ist Ihnen eine Kenntnisnahme des Inhalts, eine Vervielfältigung oder Weitergabe der E-Mail ausdrücklich untersagt. Bitte benachrichtigen Sie uns und vernichten Sie die empfangene E-Mail. Vielen Dank. This e-mail may contain trade secrets or privileged, undisclosed, or otherwise confidential information. If you have received this e-mail in error, you are hereby notified that any review, copying, or distribution of it is strictly prohibited. Please inform us immediately and destroy the original transmittal. Thank you for your cooperation. -- MaxDB Discussion Mailing List For list archives: http://lists.mysql.com/maxdb To unsubscribe:http://lists.mysql.com/[EMAIL PROTECTED]
Re: AW: Replication Questions
Hello Wolfgang, 2) If i deactivate the units and later activate them the changes made in this time are lost? (i refer to all the changes, client and master in a IN/OUT, if i only have out i know i can send content to client) = Yes. You have to do your changes while the application is not running. But if you change the application tables, shouldn't the application be stopped anyway? If i not manually deactivate the units but i have a power failure and i have to reboot a server involved in the replication, do i have to manually activate the sync or it will be activated on reboot if i launch the messageserver and syncservice automatically, i can lost many data if i have to activate this manually after hardware/so failure. 3) I would like to use sequence numbers in the structure (i have the possibility to use natural keys but any times with multiple columns, not too much practical), i have tried but when i create the sequence in the master it is not replicated in the client so i can not use the sequence in inserts into the client, can i use sequence numbers? what if about collision, the numbers that in my design can have a collision are meaningless because i haver other unique columns so i have no problem in automatically change them in the two databases if i have collision but i don't know if i can do it an how. = Sequences are not replicated. Only the numeric values generated by them in a table. So collision can occur for these values. You should combine the sequence values with some kind of database identifier. You have to define the sequence on every client. Ok i will try to design this way. Regards, Miguel Angel. -- MaxDB Discussion Mailing List For list archives: http://lists.mysql.com/maxdb To unsubscribe:http://lists.mysql.com/[EMAIL PROTECTED]
