How any grants generated in Database 12c?

The horrible confusion of what grants have been granted to what roles and what people in more places falls away if you think I’ll never use common users and never all never use common roles otherwise you just have to practice practice practice and get used to the syntax and confuse the heck out of yourself but just hang on to the simple facts that long all users normal roles work exactly as normal employable containers profiles are the same they to that then also you can create profiles beginning receipt hash in the roots where you can’t create a profile to see how ash in a pluggable container so profiles as well same thing there’s some syntax current user see ash container equals all if you try to use the other syntax. So here I am in the roots if I try to say contain your clothes currents create user see cash bob I dent FIDE by bob if I try to say container equals currents it doesn’t work because it thinks I’m trying to create a local user and of course you can’t take him.

When I wasn’t expecting exactly the right place on today show Conway yeah it doesn’t work the only legal syntax is container equals all which is the default when you are in the roots conversely if you go to a pluggable container and you try to create it local user or try to create a user, for example, well I try to do the same thing you’ll find you cannot use right can’t do a common DDL because I’m lost in the route to the only way you can do it is with container equals currents and then, of course, I get that error so it’s all a bit silly isn’t it oh okay but you can see syntactically it works so in the route you can create only common users and container equals all is the default contain equals current is important in a pluggable container you can create only local users contain Nuckols currents default container equals all is impossible right within the schema, of course, the common user has a schemer yeah.

In every container com news has a schema in every container and of course, the objects are private to that container now so my common user sees hash whatever it was my turn some tables and JW one and other tables and JW too if you drop him you’ll have to use cascade and that will drop him from all the containers and drop all these objects and you’re right Martin it really is DVA accounts it why on earth will we ever let any users do anything like that and if you find a usage case for them I will be interested to know you don’t have to tell me today you think 16 months all you let me know what I was just thinking you know like you know you have I don’t know five DBA’s at an organization would you create a and you want to you know and you’ve got a multi-tenant database system would you create a common user for each person to login to rather than having them organ system as that makes sense if it does that’s a very good usage case.

You could certainly do it that way because system is exactly that’s a common user but of course is a shared schema it’s a shared schemer what I’ve been thinking of is a different approach I’ve been assuming you’ll have the senior DBA I us who uses the account system which is common and then junior DBA who would use local users in each container MMM but if you’ve got a set of senior DBA is yes that will be the usage case you’re a set of DBA’s you want to have privileges everywhere and you don’t want them to use the shared system account MMM that’s when one that’s when you met that’s it make you you know take me a year to your sensible usage case thank you so it’s I providing to a be curious how are adding would you know anyway all the thing we’ll talk about later in the week the audit mechanism is multi terms aware but only if you use the 12c audit mechanism okay traditional audit is not multi-tenant aware and we’ll cover that later on okay rolls talked about there’s some syntax for roles.

This is granting a common role to a common user in all containers so you’d have to execute this in the root connects is also a common role but because it’s an Oracle maintained common roll it doesn’t begin with C hash, so that’s also granting a common role to a common user in all containers that are granting a local roll to a local user in the current container which is all you can ever do in a PDB that’s granting a common roll to a common user in a local container in a car in a pluggable container right and that’s granting a local roll to a common user in a do it just keep going and you’ll see the syntax I’ve got some of the exercise two shared objects right this is where the documentation goes completely wrong and there’s a bug in the textbook about this the textbook implies you can create shared objects you can’t only Oracle maintained objects are shared.

So a shared object is defined in the root and propagated or visible in all containers a shared object created in the root and visible in all containers this means the Oracle supplied objects the objects that makeup say well if you look at some the various components that might be installed if I select compa lady from DBA registry I could even go to c DB registry all of these things’ data vault apex label security all of these things are defined in the root as common objects and therefore visible in all containers so the most basic level catalog in camp rock right here I am connect sis / Oracle at GW one assist EBA at? / I’ll DBMS / admin/catalog so I try to run catalog you can run if it isn’t doing what you think is doing all it’s doing is recreating pointers to the objects in the roots this instantly is working but it’s doing something very different because these objects exist only in the roots and when you ran that nonce d b to c DB conversion scripts.

What he was doing was passing through the data dictionary of the class database removing all of this stuff and replacing it with pointers to the roots so shared objects they’re only available maintained so if we look at in the root if I look at c DB objects you’ll see one row for every object in the entire container database Easy’s Oracle maintained yes or no and only the Oracle maintained ones are shared defined in one place and there are two types are sharing just so much of interest there’s metadata sharing their object links and metadata links you can’t do any manipulation with this at all in the current release but metadata Links hare DDL and data and there will be things like DBM at own DBMS packages it divided the root sorry I just got a frog in my throat the metadata links share d GL and data and that typically means things like DBMS packages those dictionary tables there are some of what they call object links semester day two at local content.

That’s basically the work AWR the workload repository as each database maintains its own aw our local content, but this is really just academic interest now you’ve got no control over them at all hmm maintenance is borrowing scrubs service name is an important point Assembly would return to service names if you want to create a service name which you probably will do you can’t do it with alter system set service names equals you have to do it with DBMS service because the issue here is that if you have two containers with the same service name the listener would have no idea what to do it wouldn’t know where to send you now which contains to connect you to so you create your services with this within each database so or each container.

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