What is PGA?
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Program Global Area (PGA) is a memory buffer that contains
data and control information for a server process
| Is This Answer Correct ? | 6 Yes | 0 No |
Answer / satish m
The Program Global Area or Process Global Area (PGA) is a
memory region that contains
data and control information for a single server process or
a single background process. The
PGA is allocated when a process is created and deallocated
when the process is terminated.
In contrast to the SGA, which is shared by several
processes, the PGA is an area that is used
by only one process. In a dedicated server configuration,
the PGA includes these
components:
• Sort area: Used for any sorts that may be required to
process the SQL statement
• Session information: Includes user privileges and
performance statistics for the session
• Cursor state: Indicates the stage in the processing of the
SQL statements that are
currently used by the session
• Stack space: Contains other session variables
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Answer / swarna
PGA is a program global area (or) process global area.The configuration of PGA depends on server configuration. Memory is allocated to the PGA when the server process starts and outside of the instance. PGA has two server configurations.
1.dedicated server configuration
2.Shared server configuration.
For dedicated server configuration, PGA holds the stackspace and session information.
For Shared server configuration PGA holds the stackspace and session infomation is within the SGA.
Stackspace: Stackspace is the area which is used to hold the values of variables, arrays so on....
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Answer / sam
program global area
allocated space for server process
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Answer / ravi dutta
program global area is used to copy a block from the data
file to the buffer cache.
two processes are present in the pga:dedicated server
process and the shared server process.
| Is This Answer Correct ? | 1 Yes | 4 No |
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