Tablespace Interval (PI_PITS)
- Organization of this page
Function
The Tablespace Interval (PI_PITS) record stores performance data, taken at specific intervals, about tablespaces in a database. 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 |
3600 |
Y |
Collection Offset |
50 |
Y |
Log |
No |
Y |
LOGIF |
(Blank) |
Y |
Over 10 Sec Collection Time |
No |
N |
ODBC key fields
PI_PITS_TABLESPACE_NAME
Lifetime
From the creation to the deletion of a tablespace
Record size
-
Fixed part: 678 bytes
-
Variable part: 291 bytes
Fields
PFM - View name (PFM - Manager name) |
Description |
Summary |
Format |
Delta |
Supported version |
Data source |
---|---|---|---|---|---|---|
Datafiles (DATAFILES) |
Number of data files in use by the tablespace#2 |
AVG |
ushort |
No |
All |
|
I/O Ops/sec (IO_RATE) |
Number of I/O operations per second#2 |
AVG |
double |
No |
All |
(SUM(V$FILESTAT.PHYRDS) + SUM(V$FILESTAT.PHYWRTS)) / seconds in interval |
Physical Blocks Read (PHYSICAL_BLOCKS_READ) |
Number of physical blocks read#2 |
AVG |
double |
Yes |
All |
|
Physical Blocks Written (PHYSICAL_BLOCKS_WRITTEN) |
Number of physical blocks written#2 |
AVG |
double |
Yes |
All |
|
Physical Reads (PHYSICAL_READS) |
Number of physical read operations that were completed#2 |
AVG |
double |
Yes |
All |
|
Physical Writes (PHYSICAL_WRITES) |
Number of physical write operations that were completed #2 |
AVG |
double |
Yes |
All |
|
Reads/sec (READ_RATE) |
Number of read operations per second#2 |
AVG |
double |
No |
All |
SUM(V$FILESTAT.PHYRDS) / seconds in interval |
Record Time (RECORD_TIME) |
Collection termination time for the performance data stored in the record#1 |
COPY |
time_t |
No |
All |
Agent Collector |
Record Type (INPUT_RECORD_TYPE) |
Record name (always PITS)#1 |
COPY |
string(4) |
No |
All |
Agent Collector |
Rollback Segments (ROLLBACK_SEGMENTS) |
Number of rollback segments. Performance data about the locally managed tablespaces is not collected.#2 |
AVG |
ulong |
No |
All |
COUNT(DBA_ROLLBACK_SEGS) |
Rollback Segments Hit % (ROLLBACK_SEGMENTS_HIT_PERCENTAGE) |
Percentage ratio of the HIT value to the GET value. Performance data about locally managed tablespaces is not collected.#2 |
AVG |
double |
No |
All |
((SUM(V$ROLLSTAT.GETS) - SUM(V$ROLLSTAT.WAITS)) / SUM(V$ROLLSTAT.GETS)) * 100 |
Rollback Segments Trans (ROLLBACK_SEGMENTS_TRANS) |
Number of transactions that were active during data collection. Performance data about locally managed temporary tablespace is not collected.#2 |
AVG |
long |
No |
All |
SUM(V$ROLLSTAT.XACTS) |
Sort Segments (SORT_SEGMENTS) |
Number of sort segments. Performance data about locally managed permanent tablespaces is not collected.#2 |
AVG |
ulong |
No |
All |
COUNT(V$SORT_SEGMENT) |
Sorting Users (SORTING_USERS) |
Number of users that were active in the sort segment during data collection. Performance data about locally managed permanent tablespaces is not collected.#2 |
AVG |
long |
No |
All |
SUM(V$SORT_SEGMENT.CURRENT_USERS) |
Start Time (START_TIME) |
Collection start time for the performance data stored in the record#1 |
COPY |
time_t |
No |
All |
Agent Collector |
Tablespace Name (TABLESPACE_NAME) |
Tablespace name#1 |
COPY |
string(30) |
No |
All |
DBA_TABLESPACES.TABLESPACE_NAME |
Write % (WRITE_PERCENTAGE) |
Percentage ratio of write operations to all physical I/O operations #2 |
AVG |
double |
No |
All |
|
Writes/sec (WRITES_RATE) |
Number of write operations per second#2 |
AVG |
double |
No |
All |
|