In your Supportcenter.cn production database，you find that the database users are able to create and read files with unstructured data，available in any location on the host machine from an application. You want to restrict the database users to access files in a specific location on the host machine. What could do to achieve this？（） ["Modify the value for the UTL_FILE_DIR parameter in the parameter file","Grant read and write privilege on the operating system path to the database users","Modify the value for the LDAP_DIRECTORY_ACCESS parameter in the parameter file","Modify the value for the PLSQL_NATIVE_LIBRARY_DIR parameter in the parameter file","Create a directory object referring to the operating system path， and grant read and write privilege on the directory object to the database user"]
类菌质体在植物体内的存在部分？四环素族抗菌素能否根治类菌质体病害？
An employee cannot access the company database. You check the connection variables: What is a valid explanation for why one of the users is unable to connect to the database?（） ["Bob has max_user_connections set to zero, which blocks all his connections","Joe has exceeded the max_user_connections global limit","All users are blocked because max_user_connections is accumulated over the host account information","Kay is already connected elsewhere and attempting to log in again","Connect_timeout is too small to allow a connection to occur"]
A customer is evaluating PowerVM capabilities for dynamically allocating resources without rebooting LPARs. Which features of PowerVM support the customer requirement?（） ["CoD and PCI hot-plug","DLPAR and Active Memory Sharing","Hot node add and hot node repair","D.ynamic processor failure and processor instruction retry"]
税收优惠按照优惠目的通常可以分为（）优惠。 ["区域性","产业性","照顾性","鼓励性"]
范围经济
