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Which two methods exist for enabling the collection of additional resource debugging information for specific resources controlled by Oracle 12c Clusterware?
B: You can enable tracing for Oracle Clusterware resources by running the crsctl set trace command, using the following syntax:
crsctl set trace module_name 'component_name=tracing_level,...'
C: The crsctl syntax to enable debugging for resources is:
crsctl debug log res 'resname:1'
Which three statements are true regarding Flex ASM on a four-node cluster consisting of three-hub nodes and a leaf node?
Which three statements are true about services when used with transparent application failover (TAF) for an administrator-managed RAC database?
A: SESSION failover. When the connection to an instance is lost, SESSION failover results only in the establishment of a new connection to another Oracle RAC node; any work in progress is lost. SESSION failover is ideal for online transaction processing (OLTP) systems, where transactions are small.
C: SELECT failover. With SELECT failover, Oracle Net keeps track of all SELECT statements issued during the transaction, tracking how many rows have been fetched back to the client for each cursor associated with a SELECT statement. If the connection to the instance is lost, Oracle Net establishes a connection to another Oracle RAC node and re-executes the SELECT statements, repositioning the cursors so the client can continue fetching rows as if nothing has happened. The SELECT failover approach is best for data warehouse systems that perform complex and time-consuming transactions.
D: Oracle's answer to application failover is a new Oracle Net mechanism dubbed Transparent Application Failover. TAF allows the DBA to configure the type and method of failover for each Oracle Net client.
After creating a RAC One Node database using SQL statements, you want to register this database with Oracle Clusterware as a policy-managed resource.
Which command, or sequence of commands, should you use?
If your Oracle RAC One Node database did not register automatically with Oracle Clusterware, then use the srvctl add database command to add an Oracle RAC One Node database to your cluster.
For example:
srvctl add database -c RACONENODE [-e server_list] [-i instance_name] [-w timeout]
When you add services to a policy-managed Oracle RAC One Node database, SRVCTL does not accept any placement information, but instead configures those services using the value of the SERVER_POOLS attribute.
Note: Use the srvctl add database command to add an Oracle RAC One Node database to your cluster. For example:
srvctl add database -c RACONENODE [-e server_list] [-i instance_name] [-w timeout]
* -c {RACONENODE | RAC | SINGLE}
The type of database you are adding: Oracle RAC One Node, Oracle RAC, or single instance.
Examine this command:
SQL> CREATE PLUGGABLE DATABASE pdb3 FROM pdb1;
Which three conditions must be true for successful execution of this command on a RAC database? (Choose three.)
