Vendor: Oracle
Certifications: Oracle Certifications
Exam Code: 1Z0-082
Exam Name: Oracle Database Administration I
Updated: Jun 03, 2026
Q&As: 176 ( View Details)
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Which three statements are true about GLOBAL TEMPORARY TABLES? (Choose three.)
A. GLOBAL TEMPORARY TABLE space allocation occurs at session start.
B. GLOBAL TEMPORARY TABLE rows inserted by a session are available to any other session whose user has been granted select on the table.
C. A TRUNCATE command issued in a session causes all news in a GLOBAL TEMPORARY TABLE for the issuing session to be deleted.
D. A GLOBAL TEMPORARY TABLE 's definition is available to multiple sessions.
E. A DELETE command on a GLOBAL TEMPORARY TABLE cannot be rolled back.
F. Any GLOBAL TEMPORARY TABLE rows existing at session termination will be deleted.
Correct Answer: CDF
https://docs.oracle.com/javadb/10.8.3.0/ref/rrefdeclaretemptable.html
Which two statements are true regarding Oracle database space management within blocks managed by Automatic Segment Space Management (ASSM)? (Choose two.)
A. PCTFREE defaults to 10% for all blocks in all segments for all compression methods
B. ASSM assigns blocks to one of four fullness categories based on what percentage of the block is allocated for rows
C. Update operations always attempt to find blocks with free space appropriate to the length of the row being updated
D. Insert operations always attempt to find blocks with free space appropriate to the length of the row being inserted
E. A block will always be eligible for inserts if the row is short enough to fit into the block
Correct Answer: BD
Characteristics of Bitmap Segment Management
Bitmap space management uses four bits inside each data block header to indicate the amount of available space in the data block. Unlike traditional space management with a fixed relink and unlink threshold, bitmap space managements allow Oracle to compare the actual row space for an INSERT with the actual available space on the data block. This enables better reuse of the available free space especially for objects with rows of highly varying size. Here are the values inside the four-bit space:
1.
Value Meaning
2.
0000 Unformatted Block
3.
0001 Block is logically full
4.
0010 <25% free space
5.
0011 >25% but <50% free space
6.
0100 > 50% but <75% free space
7.
0101 >75% free space Table 1: Bitmap value meanings.
Which two are benefits of external tables? (Choose two.)
A. They support DELETES which transparently deletes records in the file system as if they were table rows.
B. They can be queried, transformed, and joined with other tables without having to load the data first.
C. They support UPDATES which transparently updates records in the file system as if they were table rows.
D. The results of a complex join or aggregating function or both can be unloaded to a file for transportation to another database.
E. They can be queried while the database is in the MOUNT state like dynamic performance views.
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