Failover to standby with a delay (until time)

Disaster scenario : 1) you have a primary database 2) you have a standby database 3) you want to be able to failover to the standby database until a given time (ex: within the last 24 hours) First, you create your primary and standby databases. If you have dataguard broker, you then set the DELAYMINS […]

Enterprise Manager command line interface

emcli has been around for a while, but in 12c the installation has never been easier do not search on otn for the jar, go to download with : Setup –>My Preferences –>Command line interface –> download install with : java -jar emclikit.jar client -install_dir=/u01/app/oracle/emcli configure with : emcli setup -url=https://precision.example.com:4901/em -username=sysman -password=sysmanpw -dir=/u01/app/oracle/emcli. That’s […]

delete unused shared memory segments from an Oracle instance

Once upon a time, a dba issues some kill -9 to clean up dying database processes. Or the database instance crashes. This will left some shared memory segments. Note 68281.1 describe how to remove them on a server with multiple databases. First, list the ipc process $ ipcs IPC status from /dev/mem as of Mon […]

TNSNAMES and Active Directory

It is highly probable you already have MS AD in your company. Probably you use a local tnsnames.ora. Apart from setting a Oracle Internet Directory or Oracle Virtual Directory, there is one more option that you may want to consider : AD. Ok, here is a bit of a road map : – Schema Extension […]