DataGuard

Oracle 12cR2 – DataGuard and TCP.VALID_NODE_CHECKING

By William Sescu Security is a quite important topic, especially when running Oracle in the cloud. To make your DataGuard a little bit more secure, you can enable the TCP.VALIDNODE_CHECKING feature. I call it SQL*Net Firewall. Enabling the SQL*Net Firewall(…)

Dataguard Oracle 12.2 : Support for Multiple Automatic Failover Targets

By Mouhamadou Diaw In a previous blog, we talked about Fast-Start Failover with the MaxProtection mode. With Oracle 12.2 Oracle Data Guard now supports multiple failover targets in a fast-start failover configuration. Previous functionality allowed(…)

Oracle 12cR2 – Howto setup Active DataGuard with Temporary Tablespace Groups

By William Sescu Temporary Tablespaces Groups exist for quite a while now (since 10gR2), but they are, for whatever reason not so often used. Personally, I think they are quite cool. Very easy to setup, and especially in big environments(…)

Dataguard Oracle 12.2 : Fast-Start Failover with Maximum Protection

By Mouhamadou Diaw With Oracle 12.1 the one requirement to configure Fast-start Failover is to ensure the broker configuration is operating in either Maximum Availability mode or Maximum Performance mode. With 12.2 Fast-Start Failover can be now configured with(…)

Oracle 12cR2 – Is the SYSDG Administrative Privilege enough for doing Oracle Data Guard Operations?

By William Sescu For security reasons, you may want that your DataGuard operations are done with a different UNIX user and with a different Oracle user which is not so highly privileged like the SYSDBA.  This is exactly where the(…)

Oracle 12cR2 – DataGuard and the REDO_TRANSPORT_USER

By William Sescu In a DataGuard environment, by default, the password of the SYS user is used to authenticate redo transport sessions when a password file is used. But for security reasons you might not want to use such a(…)

Oracle 12c DataGuard – Insufficient SRLs reported by DGMGRL VALIDATE DATABASE VERBOSE

By William Sescu I have setup a DataGuard environment and followed the instructions from Oracle to create the Standby Redo Logs. The Standby Redo Logs have to be the same size as the Online Redo Logs. If not, the RFS(…)