Minimum Data File Interval 2 (PI_PMDF)
- Organization of this page
Function
The Minimum Data File Interval 2 (PI_PMDF) record stores performance data, taken at specific intervals, about data files. PFM - RM for Oracle creates one record for each data file in a database. This is a multi-instance record.
Default and changeable values
Item |
Default Value |
Changeable |
---|---|---|
Collection Interval |
300 |
Y |
Collection Offset |
50 |
Y |
Log |
No |
Y |
LOGIF |
(Blank) |
Y |
Over 10 Sec Collection Time |
No |
N |
ODBC Key Fields
-
PI_PMDF_FILE_NUM
-
PI_PMDF_NAME
Lifetime
From the creation to the deletion of a data file
Record Size
-
Fixed part: 935 bytes
-
Variable part: 655 bytes
Fields
PFM - View name (PFM - Manager name) |
Description |
Summary |
Format |
Delta |
Supported Version |
Data Source |
---|---|---|---|---|---|---|
File # (FILE_NUM) |
File identification number |
COPY |
ushort |
No |
All |
For dictionary managed permanent tablespaces, dictionary managed temporary tablespaces, or locally managed permanent tablespaces: V$DATAFILE.FILE# For locally managed temporary tablespaces: V$TEMPFILE.FILE# |
File Name (NAME) |
File name |
COPY |
string(513) |
No |
All |
For dictionary managed permanent tablespaces, dictionary managed temporary tablespaces, or locally managed permanent tablespaces: V$DATAFILE.NAME For locally managed temporary tablespaces: V$TEMPFILE.NAME |
I/O Ops/sec (IO_RATE) |
Number of I/O operations per second |
AVG |
double |
No |
All |
For dictionary managed permanent tablespaces, dictionary managed temporary tablespaces, or locally managed permanent tablespaces: (V$FILESTAT.PHYRDS + V$FILESTAT.PHYWRTS) / seconds in interval For locally managed temporary tablespaces: (V$TEMPSTAT.PHYRDS + V$TEMPSTAT.PHYWRTS) / seconds in interval |
Mbytes (BYTES) |
Percentage of disk space used by a file system, in megabytes |
COPY |
double |
No |
All |
For dictionary managed permanent tablespaces, dictionary managed temporary tablespaces, or locally managed permanent tablespaces: V$DATAFILE.BYTES / (1024 * 1024) For locally managed temporary tablespaces: V$TEMPFILE.BYTES / (1024 * 1024) |
Physical Reads (PHYSICAL_READS) |
Number of physical block read operations that were completed during the interval |
AVG |
double |
Yes |
All |
For dictionary managed permanent tablespaces, dictionary managed temporary tablespaces, or locally managed permanent tablespaces: V$FILESTAT.PHYRDS For locally managed temporary tablespaces: V$TEMPSTAT.PHYRDS |
Physical Writes (PHYSICAL_WRITES) |
Number of physical block write operations that were completed during the interval |
AVG |
double |
Yes |
All |
For dictionary managed permanent tablespaces, dictionary managed temporary tablespaces, or locally managed permanent tablespaces: V$FILESTAT.PHYWRTS For locally managed temporary tablespaces: V$TEMPSTAT.PHYWRTS |
Reads/sec (READ_RATE) |
Number of read operations per second |
AVG |
double |
No |
All |
For dictionary managed permanent tablespaces, dictionary managed temporary tablespaces, or locally managed permanent tablespaces: V$FILESTAT.PHYRDS / seconds in interval For locally managed temporary tablespaces: V$TEMPSTAT.PHYRDS / seconds in interval |
Record Time (RECORD_TIME) |
Collection termination time for the performance data stored in the record |
COPY |
time_t |
No |
All |
Remote Monitor Collector |
Record Type (INPUT_RECORD_TYPE) |
Record name (always PMDF) |
COPY |
string(4) |
No |
All |
Remote Monitor Collector |
Start Time (START_TIME) |
Collection start time for the performance data stored in the record |
COPY |
time_t |
No |
All |
Remote Monitor Collector |
Tablespace Name (TABLESPACE_NAME) |
Tablespace name associated with the file |
COPY |
string(30) |
No |
All |
For dictionary managed permanent tablespaces, dictionary managed temporary tablespaces, or locally managed permanent tablespaces: DBA_DATA_FILES.TABLESPACE_NAME For locally managed temporary tablespaces: DBA_TEMP_FILES.TABLESPACE_NAME |
VA DeviceID (VADEVICEID) |
Device ID of virtual agent. |
-- |
string(256) |
No |
All |
Remote Monitor Collector |
Writes/sec (WRITES_RATE) |
Number of write operations per second |
AVG |
double |
No |
All |
For dictionary managed permanent tablespaces, dictionary managed temporary tablespaces, or locally managed permanent tablespaces: V$FILESTAT.PHYWRTS / seconds in interval For locally managed temporary tablespaces: V$TEMPSTAT.PHYWRTS / seconds in interval |