FILE#

NUMBER

Datafile identifier number (to find filename, query DBA_DATA_FILES or V$DBFILES)

BLOCK#

NUMBER

Block number

STATUS

VARCHAR2(4)

Status of block:

• FREE - Not currently in use
• XCUR - Exclusive
• SCUR - Shared current
• CR - Consistent read
• READ - Being read from disk
• MREC - In media recovery mode
• IREC - In instance recovery mode

XNC

NUMBER

Number of parallel cache management (PCM) lock conversions due to contention with another instance

NAME

VARCHAR2(30)

Name of the database object containing the block

KIND

VARCHAR2(12)

Type of database object:

• 1 - Index
• 2 - Table
• 3 - Cluster
• 4 - View
• 5 - Synonym
• 6 - Sequence
• 7 - Procedure
• 8 - Function
• 9 - Package
• 10 - Nonexistent
• 11 - Package body
• 12 - Trigger
• 13 - Type
• 14 - Type body
• 19 - Table partition
• 20 - Index partition
• 21 - LOB
• 22 - Library
• Null - Unknown

OWNER#

NUMBER

Owner number

LOCK_ELEMENT_ADDR

RAW(4 | 8)

Address of the lock element that contains the PCM lock that is covering the buffer. If more than one buffer has the same address, then these buffers are covered by the same PCM lock.

LOCK_ELEMENT_NAME

NUMBER

Address of the lock element that contains the PCM lock that is covering the buffer. If more than one buffer has the same address, then these buffers are covered by the same PCM lock.

FORCED_READS

NUMBER

Number of times the block had to be made re-read from disk because another instance had forced it out of this instance's cache by requesting the PCM lock on this block in lock mode

FORCED_WRITES

NUMBER

Number of times DBWR had to write this block to disk because this instance had dirtied the block and another instance had requested the PCM lock on the block in conflicting mode.

INDX

NUMBER

Platform-specific lock manager identifier

CLASS

NUMBER

Platform-specific lock manager identifier