Database Interval (PI_PIDB)
Function
The Database Interval (PI_PIDB) record stores performance data, taken at specific intervals, about a database.
Default and changeable values
Item | Default value | Changeable |
---|---|---|
Collection Interval | 3600 | Y |
Collection Offset | 10 | Y |
Log | No | Y |
LOGIF | (Blank) | Y |
ODBC key fields
None
Lifetime
From the creation to the deletion of a database
Record size
Fields
PFM - View name (PFM - Manager name) | Description | Summary | Format | Delta | Supported version | Data source |
---|---|---|---|---|---|---|
Archive Change # (ARCHIVE_CHANGE_NUM) | Last archived system change number (SCN)#1 | COPY | double | No | All | V$DATABASE.ARCHIVE_CHANGE# |
Blocks (BLOCKS) | Size of the database in Oracle blocks#2 | AVG | double | No | All |
|
Checkpoint Change # (CHECKPOINT_CHANGE_NUM) | System change number (SCN) at the last checkpoint#1 | COPY | double | No | All | V$DATABASE.CHECKPOINT_CHANGE# |
Created (CREATED) | Creation date #1 | COPY | string(20) | No | All | V$DATABASE.CREATED |
Datafiles (DATAFILES) | Number of data files #2 | AVG | ulong | No | All |
|
DB Files % (PERCENT_DB_FILES) | Percentage ratio of the data files to the DB_FILES parameter value in the init.ora file #2 | AVG | double | No | All |
|
DB Name (NAME) | Database name #1 | COPY | string(9) | No | All | V$DATABASE.NAME |
Extents (EXTENTS) | Correct values cannot be collected in this field. Number of extents. #2 | AVG | double | No | All |
|
Free % (PERCENT_FREE) | Percentage ratio of free space #2 | AVG | double | No | All |
|
Free Change (FREE_CHANGE) | Change to the free space in bytes | AVG | double | No | All |
|
Free Extents (FREE_EXTENTS) | Number of free extents #2 | AVG | double | No | All |
|
Free Mbytes (FREE_BYTES) | Size of free space in megabytes #2 | AVG | double | No | All |
|
High Max Extent (HIGH_MAX_EXTENTS) | Correct values cannot be collected in this field. Number of segments whose PCT_MAX_EXTENTS value exceeds 90%. #2 | HILO | ulong | 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 |
Links (LINKS) | This field is not supported. Number of database links. #2 | AVG | long | No | Not supported | COUNT(V$DBLINK) |
Links In Tran (LINKS_IN_TRAN) | This field is not supported. Number of current database links in the transaction. #2 | AVG | long | No | Not supported | SUM(V$DBLINK.IN_TRANSACTION) |
Links Logged On (LINKS_LOGGED_ON) | This field is not supported. Number of database links currently logged on. #2 | AVG | long | No | Not supported | SUM(V$DBLINK.LOGGED_ON) |
Links Open Cursors (LINKS_OPEN_CURSORS) | This field is not supported. Number of database links with open cursor. #2 | AVG | long | No | Not supported | SUM(V$DBLINK.OPEN_CURSORS) |
Log Files % (PERCENT_LOG_FILES) | Percentage ratio of REDO log files to the LOG_FILES parameter value in the init.ora file #2 Correct values cannot be collected in this field (always 0). | AVG | double | No | All | -- |
Log Mode (LOG_MODE) | Archive log mode. Valid values are NOARCHIVE, LOG, and ARCHIVELOG. #1 | COPY | string(12) | No | All | V$DATABASE.LOG_MODE |
Mbytes (BYTES) | Size of a database file in megabytes #2 | AVG | double | No | All |
|
Next Alloc Fails (NEXT_ALLOC_FAILS) | Correct values cannot be collected in this field. Number of segments that exceed the maximum fragments permitted for NEXT_EXTENT. For locally managed temporary tablespaces, always 0.#2 | HILO | ulong | No | All | COUNT(DBA_SEGMENTS) where NEXT_EXTENT > MAX(FET$.LENGTH) * DB_BLOCK_SIZE |
Overextended (OVEREXTENDED) | Correct values cannot be collected in this field. Number of segments with more than five extents. #2 | HILO | ulong | No | All |
|
Physical Blocks Read (PHYSICAL_BLOCKS_READ) | Number of physical block read operations #2 | AVG | double | Yes | All | SUM(V$FILESTAT.PHYBLKRD) |
Physical Blocks Written (PHYSICAL_BLOCKS_WRITTEN) | Number of physical block write operations #2 | AVG | double | Yes | All | SUM(V$FILESTAT.PHYBLKWRT) |
Physical Reads (PHYSICAL_READS) | Number of physical read operations that were completed #2 | AVG | double | Yes | All | SUM(V$FILESTAT.PHYRDS) |
Physical Writes (PHYSICAL_WRITES) | Number of physical write operations that were completed #2 | AVG | double | Yes | All | SUM(V$FILESTAT.PHYWRTS) |
Reads/sec (READ_RATE) | Number of read operations per second #2 | AVG | double | No | All | SUM(V$FILESTAT.PHYRDS) / seconds in interval |
Record Time (RECORD_TIME) | Collection termination time for the performance data stored in the record#1 | COPY | time_t | No | All | Remote Monitor Collector |
Record Type (INPUT_RECORD_TYPE) | Record name (always PIDB)#1 | COPY | string(4) | No | All | Remote Monitor Collector |
Redo Files (REDO_FILES) | Number of REDO log files #2 | AVG | ulong | No | All | COUNT(V$LOGFILE) |
Rollback Segments (ROLLBACK_SEGMENTS) | Number of rollback segments #2 | AVG | ulong | No | All | COUNT(V$ROLLNAME) |
Rollback Segments Hit % (ROLLBACK_SEGMENTS_HIT_PERCENTAGE) | Rate at which the rollback segment header was obtained without waiting #2 | AVG | double | No | All | ((SUM(V$ROLLSTAT.GETS) - SUM(V$ROLLSTAT.WAITS)) / SUM(V$ROLLSTAT.GETS)) * 100 |
Rollback Segments Trans (ROLLBACK_SEGMENTS_TRANS) | Number of currently active transactions #2 | AVG | long | No | All | SUM(V$ROLLSTAT.XACTS) |
Segments (SEGMENTS) | Correct values cannot be collected in this field. Number of segments. #2 | AVG | ulong | No | All |
|
Sort Segments (SORT_SEGMENTS) | Correct values cannot be collected in this field. Number of sort segments. #2 | AVG | ulong | No | All | COUNT(V$SORT_SEGMENT) |
Sorting Users (SORTING_USERS) | Number of active users for the current sort segment #2 | AVG | long | No | All | SUM(V$SORT_SEGMENT.CURRENT_USERS) |
Start Time (START_TIME) | Collection start time for the performance data stored in the record#1 | COPY | time_t | No | All | Remote Monitor Collector |
Tablespaces (TABLESPACES) | Number of tablespaces #2 | AVG | double | No | All | COUNT(DBA_TABLESPACES) |
Used Change (USED_CHANGE) | Change to the used space in bytes#2 | AVG | double | No | All |
|
Used Mbytes (USED_BYTES) | Size of used area in megabytes. If the monitoring target is locally managed temporary tablespaces, performance data are not collected. #2 | AVG | double | No | All |
|
VA DeviceID (VADEVICEID) | Device ID of virtual agent. | -- | string(256) | No | All | Remote Monitor Collector |
Write % (WRITE_PERCENTAGE) | Percentage ratio of write operations #2 | AVG | double | No | All | (SUM(V$FILESTAT.PHYWRTS) / (SUM(V$FILESTAT.PHYRDS) + SUM(V$FILESTAT.PHYWRTS))) * 100 |
Writes/sec (WRITES_RATE) | Number of write operations per second#2 | AVG | double | No | All | SUM(V$FILESTAT.PHYWRTS) / seconds in interval |