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Koala rare
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35 questions
Easy
2 votes183 runs0 comment

What type of join returns all rows in the left-hand table, even if they have no match in the right-hand table?

Tech support officier
Koala rareat Feb 11, 2025
Easy
2 votes171 runs0 comment

How to rename a column in an existing table in Oracle?

Tech support officier
Koala rareat Feb 11, 2025
Easy
2 votes97 runs0 comment

What is the main role of a VPC in GCP?

DevOps
networking
security
Koala rareat Feb 4, 2025
Easy
1 vote163 runs0 comment

What is the result of this Oracle query?

Tech support officier
NVL
Koala rareat Feb 11, 2025
Medium
1 vote156 runs0 comment

Which Oracle tool can be used to analyze SQL query performance?

Tech support officier
sql
Koala rareat Feb 11, 2025
Expert
1 vote151 runs0 comment

What does the following SQL query return?

Tech support officier
database
sql
Koala rareat Feb 11, 2025
Hard
1 vote150 runs0 comment

Where does Oracle log system errors and critical events ?

Tech support officier
logging
troubleshooting
Koala rareat Feb 11, 2025
Hard
1 vote144 runs0 comment

What type of index is recommended for columns with few distinct values in Oracle?

Tech support officier
indexes
bitmap
Koala rareat Feb 11, 2025
Medium
0 vote162 runs0 comment

What happens after executing this code in Oracle?

Tech support officier
transactions
rollback
Koala rareat Feb 11, 2025
Easy
0 vote156 runs0 comment

What is the main function of the `DBMS_SCHEDULER` package in Oracle?

Tech support officier
database
scheduling
Koala rareat Feb 11, 2025
Easy
0 vote145 runs0 comment

What does this PL/SQL code do?

Tech support officier
cursors
loops
Koala rareat Feb 11, 2025
Medium
0 vote143 runs0 comment

What are the primary uses of a Materialized View in Oracle?

Tech support officier
Koala rareat Feb 11, 2025
Hard
0 vote139 runs0 comment

What does the "INSERT /*+ APPEND */" instruction do in Oracle?

Tech support officier
sql
insert
direct path
Koala rareat Feb 11, 2025
Medium
0 vote138 runs0 comment

What is the role of the SYSTEM tablespace in Oracle?

Tech support officier
database
tablespace
Koala rareat Feb 11, 2025
Easy
0 vote135 runs0 comment

How to grant SELECT rights on a table in Oracle?

Tech support officier
Koala rareat Feb 11, 2025
Hard
0 vote134 runs0 comment

What is the length of the string "\u00e9" in Oracle?

Tech support officier
Koala rareat Feb 12, 2025
Medium
0 vote133 runs0 comment

Which Oracle architecture component contains the in-memory data cache?

Tech support officier
SGA
Koala rareat Feb 11, 2025
Medium
0 vote133 runs0 comment

How to backup a database with RMAN in Oracle?

Tech support officier
backup
RMAN
Koala rareat Feb 11, 2025
Easy
0 vote132 runs0 comment

What's the difference between VARCHAR2 and CHAR in Oracle?

Tech support officier
varchar2
char
Koala rareat Feb 11, 2025
Easy
0 vote119 runs0 comment

What happens after executing this code in Oracle?

Tech support officier
transactions
rollback
Koala rareat Feb 11, 2025