These activities are administrative privilege connections, database startups, and database shutdowns. There are also activities that Oracle Database always audits, regardless of whether auditing is enabled. In standard auditing, you use initialization parameters and the AUDIT and NOAUDIT SQL statements to audit SQL statements, privileges, and schema objects, and network and multitier activities. TIP: For more information, see official third party (Oracle) documentation, such as Oracle's article 6857474.Auditing is the monitoring and recording of selected user database actions.
Obtain some downtime (nobody using the databases) and restart the Oracle database server (or simply the relevant Oracle database).Īpply relevant Oracle patch/upgrade. Assuming that it shows that you ARE using spfile, then type the following command: alter system set PROCESSES=300 scope = spfile. Type the following command (to check that the database is using spfile): show parameter spfile. In one real-life example (where it used spfile), the steps to change this parameter were: For example, some database servers may be configured to use the 'spfile' parameters, but others may not. For other customers, they have required 500 or even 1000.Īsk your Oracle DBA to consult official Oracle documentation to confirm the best method for your Oracle environment. In many/most customer's environments, 300 is sufficient. Increase the maximum number of possible processes by increasing the value for PROCESSES on the Oracle database server (typically by default from 150) to a sensibly larger value When the listener believes the current number of connections has reached maximum load, it may set the state of the service handler for an instance to "blocked" and begin refusing incoming client connections with either of the following errors: ora-12519 or ora-12516 Since this can take as long as 10 minutes, there can be a difference between the current instance load according to the listener and the actual instance load. Only when PMON updates the listener via SERVICE_UPDATE is the listener informed of current load. The listener counts the number of connections it has established to the instance but does not immediately get information about connections that have terminated. The maximum interval between these service updates is 10 minutes. The frequency at which PMON provides SERVICE_UPDATE information varies according to the workload of the instance. Maximum load for dedicated connections is determined by the PROCESSES parameter. PMON is responsible for updating the listener with information about a particular instance such as load and dispatcher information. #Toad for oracle database update
Once the TNS Listener receives an update from the PMON process associated with the Database instance telling the TNS Listener the thresholds are below the configured limit, and the database is now accepting connections connectivity resumes. When this occurs, the service handlers for the TNS listener become "Blocked" and no new connections can be made. One of the most common reasons for the TNS-12516 and/or TNS-12519 errors being reported is the configured maximum number of PROCESSES and/or SESSIONS limitation being reached. For more details, see separate IBM Technote #1978834.Scenario #4 - Defect in Controller 10.2 onwards, which causes too many processes to be consumed.For more details, see separate IBM Technote #1611403.Scenario #3 - Defect in Controller 10.1.0.This means that the used processes are never released when closed.
Scenario #2 - Bug in third party (Oracle) software, causing session leak when JDBC connections are created/used.Scenario #1 - Oracle database server's value for "PROCESSES" has been configured too low.There are several potential causes for the Oracle database server running out of available 'processes':
This means that the Oracle database server cannot accept any new connections. The Oracle database server (hosting the Controller database) has run out of available 'Oracle processes'.
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