High Availability Data Guard, Sharding and Global Data Services (MOSC)

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How do you do to prevent the standby database to open ?

in High Availability Data Guard, Sharding and Global Data Services (MOSC) 8 comments

Hi,

We are migrating our databases to 19c (in Windows 2K16 environment) and usually, in order not to use the physical standby dataguard, we were using a particular hidden parameter (I know we should not ... but ...) : _query_on_physical = false to prevent the standby database to be opened, and to stay only mounted.

But on one database, this parameter does not work anymore.

For example, I have two database DB01 and DB02, DB01 is my primary, DB02 is the standby and we are also using a broker.

When I issue a switchover from DB01 to DB02, DB02 becomes the primary and is opened and DB01 becomes the standby and it should not open. And effectively, it is in mount mode.

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