SGA Components (PD_PDSG)
- Organization of this page
Function
The SGA Components (PD_PDSG) record stores performance data indicating the status (at a specific point in time) of the system global area (SGA). PFM - Agent for Oracle creates one record for each system global area (SGA). This is a multi-instance record.
- Notes
-
If the monitoring target is Oracle Database 12c Release 2 or later in a CDB configuration, this record collects different performance data depending on whether PDBs are being monitored or the root container (CDB$ROOT) is being monitored.
- When monitoring PDBs
-
-
Performance data for SGA allocated to the PDBs that are being monitored
-
Performance data for common SGA of database instances
-
- When monitoring the root container (CDB$ROOT)
-
-
Use administrative accounts (sys or system)
- Performance data for SGA allocated to all PDBs
- Performance data for SGA allocated to the root container (CDB$ROOT)
- Performance data for common SGA of database instances
-
Use common user
- Performance data for SGA allocated to the root container (CDB$ROOT)
- Performance data for common SGA of database instances
-
Default and changeable values
|
Item |
Default value |
Changeable |
|---|---|---|
|
Collection Interval |
600 |
Y |
|
Collection Offset |
115 |
Y |
|
Log |
No |
Y |
|
LOGIF |
(Blank) |
Y |
|
Over 10 Sec Collection Time |
No |
N |
ODBC key fields
PD_PDSG_NAME
Lifetime
From the creation to the deletion of an Oracle instance
Record size
-
Fixed part: 678 bytes
-
Variable part: 66 bytes
Fields
|
PFM - View name (PFM - Manager name) |
Description |
Summary |
Format |
Delta |
Supported version |
Data source |
|---|---|---|---|---|---|---|
|
Bytes (BYTES) |
Size of allocated memory (in bytes) |
-- |
double |
No |
All |
|
|
Component Name (NAME) |
Name of the SGA component |
-- |
string(26) |
No |
All |
|
|
Container ID (CONTAINER_ID) |
The ID of the container to which SGA component belongs. This field is valid if the monitoring target is Oracle Database 12c R2 or later in a CDB configuration. Otherwise, the value is 0. |
-- |
word |
No |
Oracle 12c R2 or later |
V$SGASTAT.CON_ID |
|
PDB Bytes (PDB_BYTES) |
Retrieves total size of memory for each Container ID field. The value can be either of the following:
This field is valid if the monitoring target is Oracle Database 12c R2 or later in a CDB configuration. Otherwise, the value is 0. |
-- |
double |
No |
Oracle 12c R2 or later |
V$SGASTAT.BYTES |
|
Pool (POOL) |
Pools in which there is component name memory. There are four pools:
This field is blank when there is no applicable pool. |
-- |
string(12) |
No |
10-00 or later |
|
|
Record Time (RECORD_TIME) |
Collection termination time for the performance data stored in the record |
-- |
time_t |
No |
All |
Agent Collector |
|
Record Type (INPUT_RECORD_TYPE) |
Record name (always PDSG) |
-- |
string(4) |
No |
All |
Agent Collector |
|
Start Time (START_TIME) |
Collection start time for the performance data stored in the record |
-- |
time_t |
No |
All |
Agent Collector |
|
Total Bytes (TOTAL_BYTES) |
Total size (in bytes) of memory allocated to all SGA components If the monitoring target is Oracle 12c R2 or later in a CDB configuration, total size of memory allocated to the entire CDB. |
-- |
double |
No |
All |
V$SGASTAT.BYTES |