OCP 1Z0 053 33
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33.You want to perform the following operations for the DATA ASM disk group:
-Verify the consistency of the disk.
-Cross-check all the file extent maps and allocation tables for consistency. heck whether the alias
metadata directory and file directory are linked correctly.
-Check that ASM metadata directories do not have unreachable allocated blocks.
Which command accomplishes these tasks?
A. ALTER DISKGROUP data CHECK;
B. ALTER DISKGROUP data CHECK DISK;
C. ALTER DISKGROUP data CHECK FILE;
D. ALTER DISKGROUP data CHECK DISK IN FAILURE GROUP 1;
Answer: A
http://docs.oracle.com/cd/E11882_01/server.112/e41084/statements_1007.htm#SQLRF52644
-Verify the consistency of the disk.
-Cross-check all the file extent maps and allocation tables for consistency. heck whether the alias
metadata directory and file directory are linked correctly.
-Check that ASM metadata directories do not have unreachable allocated blocks.
Which command accomplishes these tasks?
A. ALTER DISKGROUP data CHECK;
B. ALTER DISKGROUP data CHECK DISK;
C. ALTER DISKGROUP data CHECK FILE;
D. ALTER DISKGROUP data CHECK DISK IN FAILURE GROUP 1;
Answer: A
http://docs.oracle.com/cd/E11882_01/server.112/e41084/statements_1007.htm#SQLRF52644
check_diskgroup_clause
The check_diskgroup_clause
lets you verify the internal consistency of Oracle ASM disk group metadata. The disk group must be mounted. Oracle ASM displays summary errors and writes the details of the detected errors in the alert log.
The CHECK
keyword performs the following operations:
Checks the consistency of the disk.
Cross checks all the file extent maps and allocation tables for consistently.
Checks that the alias metadata directory and file directory are linked correctly.
Checks that the alias directory tree is linked correctly.
Checks that Oracle ASM metadata directories do not have unreachable allocated blocks.
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