Tablespace Fragmentation (PD_PDTF)
- Organization of this page
Function
The Tablespace Fragmentation (PD_PDTF) record stores performance data indicating the status (at a specific point in time) of fragmentation of tablespaces. PFM - Agent for Oracle creates one record for each tablespace in a database. This is a multi-instance record.
Default and changeable values
Item |
Default value |
Changeable |
---|---|---|
Collection Interval |
600 |
Y |
Collection Offset |
135 |
Y |
Log |
No |
Y |
LOGIF |
(Blank) |
Y |
Over 10 Sec Collection Time |
No |
N |
ODBC key fields
PD_PDTF_TABLESPACE_NAME
Lifetime
From the creation to the deletion of a tablespace
Record size
-
Fixed part: 678 bytes
-
Variable part: 79 bytes
Fields
PFM - View name (PFM - Manager name) |
Description |
Summary |
Format |
Delta |
Supported version |
Data source |
---|---|---|---|---|---|---|
Avg Fragment (AVERAGE_FRAGMENT) |
Average fragment size in bytes. The value of this field is free space when this field displays locally managed temporary tablespaces and the value of localtemp_option is Y, because fragment to the locally managed temporary tablespace is 1. |
-- |
double |
No |
All |
|
Extents (EXTENTS) |
Number of extents |
-- |
ulong |
No |
All |
|
Fragments (FRAGMENTS) |
Number of fragments. Always 1 for locally managed temporary tablespaces when the value of localtemp_option is Y. |
-- |
ulong |
No |
All |
|
High Max Extents (HIGH_MAX_EXTENTS) |
Number of segments whose PCT_MAX_EXTENTS value exceeds 90% |
-- |
ulong |
No |
All |
|
Largest Fragment (LARGEST_FRAGMENT) |
Largest fragment size in bytes The value of this field is free space when this field displays locally managed temporary tablespaces and the value of localtemp_option is Y, because fragment to the locally managed temporary tablespace is 1. |
-- |
double |
No |
All |
|
Largest Fragment % (LARGEST_FRAGMENT_PERCENT) |
Percentage ratio of tablespace in the largest fragment |
-- |
double |
No |
All |
|
Next Alloc Fails (NEXT_ALLOC_FAILS) |
Indicates whether the following extent allocation failed.
These results take effect for the following conditions:
0 is returned for any other conditions. |
-- |
ulong |
No |
All |
|
Overextended (OVEREXTENDED) |
Number of segments with more than five extents |
-- |
ulong |
No |
All |
|
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 PDTF) |
-- |
string(4) |
No |
All |
Agent Collector |
Segments (SEGMENTS) |
Number of segments Always 1 for locally managed temporary tablespaces when the value of localtemp_option is Y. |
-- |
ulong |
No |
All |
|
Start Time (START_TIME) |
Collection start time for the performance data stored in the record |
-- |
time_t |
No |
All |
Agent Collector |
Tablespace Name (TABLESPACE_NAME) |
Tablespace name |
-- |
string(30) |
No |
All |
DBA_TABLESPACES.TABLESPACE_NAME |