Checking the Status of Cache and Replication Agents
You can check the status of cache and replication agents.
Checking the Status of the Cache Agents in TimesTen Scaleout
In TimesTen Scaleout, you can use the ttGridAdmin dbStatus
-all command to check whether the TimesTen cache agent processes are running.
See Monitoring the Status of the Cache Agent Processes in the Oracle TimesTen In-Memory Database Scaleout User's Guide.
The following example shows that the cache agent processes are stopped with the CA Status column.
% ttGridAdmin dbStatus -all Database database1 summary status as of Mon Dec 7 09:36:43 PST 2020 created,loaded-complete,open Completely created elements: 6 (of 6) Completely loaded elements: 6 (of 6) Completely created replica sets: 3 (of 3) Completely loaded replica sets: 3 (of 3) Open elements: 6 (of 6) Database database1 element level status as of Mon Dec 7 09:36:43 PST 2020 Host Instance Elem Status CA Status Date/Time of Event Message ----- --------- ---- ------ --------- ------------------- ------- host3 instance1 1 opened stopped 2020-11-23 08:37:35 host4 instance1 2 opened stopped 2020-11-23 08:37:35 host5 instance1 3 opened stopped 2020-11-23 08:37:35 host6 instance1 4 opened stopped 2020-11-23 08:37:35 host7 instance1 5 opened stopped 2020-11-23 08:37:35 host8 instance1 6 opened stopped 2020-11-23 08:37:35 Database database1 Replica Set status as of Mon Dec 7 09:36:43 PST 2020 RS DS Elem Host Instance Status Date/Time of Event Message -- -- ---- ----- --------- ------ ------------------- ------- 1 1 1 host3 instance1 opened 2020-11-23 08:37:35 1 2 2 host4 instance1 opened 2020-11-23 08:37:35 2 1 3 host5 instance1 opened 2020-11-23 08:37:35 2 2 4 host6 instance1 opened 2020-11-23 08:37:35 3 1 5 host7 instance1 opened 2020-11-23 08:37:35 3 2 6 host8 instance1 opened 2020-11-23 08:37:35 Database database1 Data Space Group status as of Mon Dec 7 09:36:43 PST 2020 DS RS Elem Host Instance Status Date/Time of Event Message -- -- ---- ----- --------- ------ ------------------- ------- 1 1 1 host3 instance1 opened 2020-11-23 08:37:35 1 2 3 host5 instance1 opened 2020-11-23 08:37:35 1 3 5 host7 instance1 opened 2020-11-23 08:37:35 2 1 2 host4 instance1 opened 2020-11-23 08:37:35 2 2 4 host6 instance1 opened 2020-11-23 08:37:35 2 3 6 host8 instance1 opened 2020-11-23 08:37:35
Checking the Status of the Cache and Replication Agents in TimesTen Classic
In TimesTen Classic, you can use either the ttAdmin or
ttStatus utility to check whether the cache
agent and replication agent processes are running as well as determine each
agent's start policy.
You can use a ttAdmin -query command to determine the status of the cache and replication agents, as well as the cache and replication agent start policies for a TimesTen database:
% ttAdmin -query cache1 RAM Residence Policy : inUse Replication Agent Policy : manual Replication Manually Started : True Cache Agent Policy : always Cache Agent Manually Started : True
See ttAdmin in Oracle TimesTen In-Memory Database Reference.
Using the ttStatus utility without any commands shows all status
information for cache and replication for all TimesTen instances:
% ttStatus TimesTen status report as of Thu May 7 13:42:01 2009 Daemon pid 9818 port 4173 instance myinst TimesTen server pid 9826 started on port 4175 ------------------------------------------------------------------------ Data store /disk1/databases/database1 There are 38 connections to the data store Shared Memory KEY 0x02011c82 ID 895844354 PL/SQL Memory KEY 0x03011c82 ID 895877123 Address 0x10000000 Type PID Context Connection Name ConnID Cache Agent 1019 0x0828f840 Handler 2 Cache Agent 1019 0x083a3d40 Timer 3 Cache Agent 1019 0x0842d820 Aging 4 Cache Agent 1019 0x08664fd8 Garbage Collector(-1580741728) 5 Cache Agent 1019 0x084d6ef8 Marker(-1580213344) 6 Cache Agent 1019 0xa5bb8058 DeadDsMonitor(-1579684960) 7 Replication 18051 0x08c3d900 RECEIVER 8 Replication 18051 0x08b53298 REPHOLD 9 Replication 18051 0x08af8138 REPLISTENER 10 Replication 18051 0x08a82f20 LOGFORCE 11 Replication 18051 0x08bce660 TRANSMITTER 12 Subdaemon 9822 0x080a2180 Manager 2032 Subdaemon 9822 0x080ff260 Rollback 2033 Subdaemon 9822 0x08548c38 Flusher 2034 Subdaemon 9822 0x085e3b00 Monitor 2035 Subdaemon 9822 0x0828fc10 Deadlock Detector 2036 Subdaemon 9822 0x082ead70 Checkpoint 2037 Subdaemon 9822 0x08345ed0 Aging 2038 Subdaemon 9822 0x083a1030 Log Marker 2039 Subdaemon 9822 0x083fc190 AsyncMV 2040 Subdaemon 9822 0x084572f0 HistGC 2041 Replication policy : Manual Replication agent is running. Cache Agent policy : Always TimesTen's Cache agent is running for this data store PL/SQL enabled. ------------------------------------------------------------------------
The information displayed by the ttStatus utility include the
following that pertains to TimesTen for each TimesTen
instance:
-
The names of the cache agent process threads that are connected to the TimesTen database
-
The names of the replication agent process threads that are connected to the TimesTen database
-
Status on whether the cache agent is running
-
Status on whether the replication agent is running
-
The cache agent start policy
-
The replication agent start policy
See ttStatus in Oracle TimesTen In-Memory Database Reference.