5.56 DBA_HIST_SHARED_SERVER_SUMMARY

DBA_HIST_SHARED_SERVER_SUMMARY displays historical information for shared servers.

This includes information about shared server activity, the servers, common queues, and dispatcher queues. This view obtains information from V$SHARED_SERVER, V$DISPATCHER, V$CIRCUIT, and V$QUEUE, and is aggregated over all servers, dispatchers, queues, and circuits.

Column Datatype NULL Description

SNAP_ID

NUMBER

NOT NULL

Unique snapshot ID

DBID

NUMBER

NOT NULL

Database ID for the snapshot

INSTANCE_NUMBER

NUMBER

NOT NULL

Instance number for the snapshot

NUM_SAMPLES

NUMBER

Total number of samples

SAMPLE_TIME

NUMBER

Last sample timestamp

SAMPLED_TOTAL_CONN

NUMBER

Cumulative sum of total number of connections over all samples. To determine the average number of connections between two snapshots, divide the difference in SAMPLED_TOTAL_CONN by the difference in NUM_SAMPLES.

SAMPLED_ACTIVE_CONN

NUMBER

Cumulative sum of active number of connections over all samples. To determine the average number of active connections between two snapshots, divide the difference in SAMPLED_ACTIVE_CONN by the difference in NUM_SAMPLES.

SAMPLED_TOTAL_SRV

NUMBER

Cumulative sum of total number of servers over all samples. To determine the average number of servers between two snapshots, divide the difference in SAMPLED_TOTAL_SRV by the difference in NUM_SAMPLES.

SAMPLED_ACTIVE_SRV

NUMBER

Cumulative sum of active number of servers over all samples. To determine the average number of active servers between two snapshots, divide the difference in SAMPLED_ACTIVE_SRV by the difference in NUM_SAMPLES.

SAMPLED_TOTAL_DISP

NUMBER

Cumulative sum of total number of dispatchers over all samples. To determine the average number of dispatchers between two snapshots, divide the difference in SAMPLED_TOTAL_DISP by the difference in NUM_SAMPLES.

SAMPLED_ACTIVE_DISP

NUMBER

Cumulative sum of active number of dispatchers over all samples. To determine the average number of active dispatchers between two snapshots, divide the difference in SAMPLED_ACTIVE_DISP by the difference in NUM_SAMPLES.

SRV_BUSY

NUMBER

Total shared server busy time (in hundredths of a second)

SRV_IDLE

NUMBER

Total shared server idle time (in hundredths of a second)

SRV_IN_NET

NUMBER

Total shared server incoming network wait time (in hundredths of a second). This includes waits for receives and resets. This time is also included in SRV_BUSY.

SRV_OUT_NET

NUMBER

Total shared server outgoing network wait time (in hundredths of a second). This includes waits for sends and outbound connection requests. This time is also included in SRV_BUSY.

SRV_MESSAGES

NUMBER

Number of messages processed

SRV_BYTES

NUMBER

Total number of bytes in all messages

CQ_WAIT

NUMBER

Total time that all items in the common queue have waited (in hundredths of a second)

CQ_TOTALQ

NUMBER

Total number of items that have ever been in the common queue

DQ_TOTALQ

NUMBER

Total number of items that have ever been in a dispatcher queue

CON_DBID

NUMBER

The database ID of the PDB for the sampled session

CON_ID

NUMBER

The ID of the container that CON_DBID identifies. Possible values include:

  • 0: This value is used for rows containing data that pertain to the entire CDB. This value is also used for rows in non-CDBs.

  • 1: This value is used for rows containing data that pertain to only the root

  • n: Where n is the applicable container ID for the rows containing data

See Also: