What Is a Data Lock in Oracle?
Submitted by: AdministratorA data lock is logical flag the Oracle server is placed on data objects to give an exclusive right to a transaction. Statements in other transactions needs to respect data locks based on certain rules. Rules on data locks are:
► SELECT query statements do not create any data locks.
► INSERT, UPDATE, and DELETE statements create data locks on the affected rows.
► Data locks are released when the owner transaction ends.
Submitted by: Administrator
► SELECT query statements do not create any data locks.
► INSERT, UPDATE, and DELETE statements create data locks on the affected rows.
► Data locks are released when the owner transaction ends.
Submitted by: Administrator
Read Online Oracle Database Job Interview Questions And Answers
Top Oracle Database Questions
| ☺ | How To Call a Stored Function in Oracle? |
| ☺ | How Run SQL*Plus Commands That Are Stored in a Local File? |
| ☺ | How Much Memory Your 10g XE Server Is Using? |
| ☺ | What Is Input Buffer in SQL*Plus? |
| ☺ | What Is the Relation of a User Account and a Schema? |
Top DB Oracle Categories
| ☺ | Oracle PL-SQL Interview Questions. |
| ☺ | Oracle DBA Interview Questions. |
| ☺ | Oracle D2K Interview Questions. |
| ☺ | OCI Interview Questions. |
| ☺ | Oracle RMAN Interview Questions. |
