A PL/SQL procedure queries only those columns of a redefined table that were unchanged by the online table redefinition. What happens to the PL/SQL procedure after the online table redefinition?（）
A. It remains valid.
B. It becomes invalid for all options of online table redefinition but automatically gets revalidated the next time it is used.
C. It becomes invalid for all options of online table redefinition and is automatically recompiled during online redefinition of the table.
D. It becomes invalid only if the storage parameters have been modified and it automatically gets revalidated the next time it is used.
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可以使用普通货物运输车辆配送氧气罐。
A. 正确
B. 错误
An administrator can create logical volumes and then add file systems to them， or create the file system directly. What is an dvantage of the two-step approach instead of the one-step approach（）
A. The number of bytes per inode can be specified.
B. Placement of the filesystem on the disk can be specified.
C. The jfslog can be specified on creation of the filesystem.
D. Either a JFS or JFS2 filesystem can be created on the logical volume.
A system administrator receives a new server and has booted the system for the first time. The administrator has set up the terminals and users. The user start to log on. Root is logged in on the console. When additional users start to log in, an error is displayed stating that All available login sessions are in use. Which of the following steps should be followed to resolve this problem?（）
A. Permissions on /etc/security were changed in error; do a chmod 755 on /etc/security directory.
B. Increase the number of licenses; using smit chaili cense
Change the Maximum number of PROCESSES allowed per user variable; using smit chgsys.
D. Change User can logi field from false to true: using smit chuser.
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