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7.156 V$DISPATCHER_RATE → V$DISPATCHER_RATE displays rate statistics for a number of activities performed by the dispatcher
5.3.6 Shared Server Data Dictionary Views → $DISPATCHER_CONFIG Provides configuration information about the dispatchers. V$DISPATCHER_RATE Provides rate … monitor performance. View Description V$DISPATCHER Provides information on the dispatcher processes … , including name, network address, status, various usage statistics, and index number. V … statistics
Identifying and Reducing Contention Using the Dispatcher-Specific Views → about dispatcher processes V$DISPATCHER_RATE: dispatcher processing statistics The V$DISPATCHER_RATE … dispatcher performance, query the V$DISPATCHER_RATE view and compare the current values with the maximums … maximums, then you might need to add more dispatchers. A general rule is
5.3.5 Disabling Shared Server → $QUEUE V$DISPATCHER V$DISPATCHER_RATE If these views indicate that the load on the dispatcher … MAX_DISPATCHERS parameter. Monitor the following views to determine the load on the dispatcher processes: V … dispatchers and so forth--query the V$DISPATCHER_CONFIG dynamic performance view. To see which
Contents → 7.156 V$DISPATCHER_RATE 7.157 V$DNFS_CHANNELS 7.158 V$DNFS_FILES 7.159 V$DNFS_SERVERS 7.160 V … USER_ZONEMAP_MEASURES 6.624 USER_ZONEMAPS Part III Dynamic Performance Views 7 Dynamic Performance (V … $) Views: V$ACCESS to V$HVMASTER_INFO
Monitoring Dispatchers → Use the following views to check configurations and monitor dispatchers: V$QUEUE: Contains … who have SELECT ANY TABLE system privilege, such as SYSTEM. V$DISPATCHER: Provides information about … index number. V$DISPATCHER_CONFIG: Provides configuration information about the dispatchers. V … $DISPATCHER_RATE:
Declaring Associative Array Constants → '; Ret(9):= 'nine'; RETURN Ret; END Init_My_AA; END My_Types; / DECLARE v CONSTANT My_Types.My_AA … DBMS_OUTPUT.PUT_LINE(TO_CHAR(Idx, '999')||LPAD(v(Idx), 7)); Idx:= v.NEXT(Idx); END LOOP; END; END
PL/SQL Functions that SQL Statements Can Invoke → Packages and Types Reference. Dynamic performance views: [G]V$RESULT_CACHE_STATISTICS [G]V … $RESULT_CACHE_MEMORY [G]V$RESULT_CACHE_OBJECTS [G]V$RESULT_CACHE_DEPENDENCY See Oracle Database Reference for more … information about [G]V$RESULT_CACHE_STATISTICS, [G]V$RESULT_CACHE_MEMORY,
Conditional Compilation Examples → Database release number. Each BOOLEAN constant of the form VER_LE_ v has the value TRUE if the database … version is less than or equal to v. otherwise, it has the value FALSE. Each BOOLEAN constant of the … form VER_LE_ v_r has the value TRUE if the database version is less than or equal to v and release
Part V Oracle Instance Architecture → This part describes the basic structural architecture of the Oracle database instance. This part contains the following chapters: Oracle Database Instance Memory Architecture Process Architecture Application and Networking Architecture
Part V Distributed Database Management → You can manage a distributed database environment.
D PL/SQL Reserved Words and Keywords → can display them with the dynamic performance view V$RESERVED_WORDS. For information about this view … , SQL, START, SUBTYPE T TABAUTH, TABLE, THEN, TO, TYPE U UNION, UNIQUE, UPDATE V VALUES, VIEW, VIEWS W … , UNSIGNED, UNTRUSTED, USE, USING V VALIST, VALUE, VARIABLE, VARIANCE, VARRAY, VARYING, VOID W WHILE, WORK, WRAPPED, WRITE Y YEAR
Formal and Actual Subprogram Parameters → SUBTYPE n1 IS NUMBER(1); SUBTYPE v1 IS VARCHAR2(1); PROCEDURE p (n n1, v v1) IS... But you cannot … ), v VARCHAR2(1)) IS... Tip: To avoid confusion, use different names for formal and actual parameters
Cursors Overview → cursors that each user session currently has opened and parsed, query the dynamic performance view V … for information about the dynamic performance view V$OPEN_CURSOR Oracle Database Reference for information about the initialization parameter OPEN_CURSORS
Part V Optimizer Statistics → The optimizer relies on statistics to create execution plans. This part contains the following chapters: Optimizer Statistics Concepts Histograms Managing Optimizer Statistics: Basic Topics Managing Optimizer Statistics: Advanced Topics
Identifying Bottlenecks with V$BACKUP_SYNC_IO and V$BACKUP_ASYNC_IO → You can use the V$BACKUP_SYNC_IO and V$BACKUP_ASYNC_IO views to determine the source of backup or … restore bottlenecks and to see detailed progress of backup jobs. V$BACKUP_SYNC_IO contains rows when … the I/O is synchronous to the process (or thread on some platforms) performing the backup. V … SQL*Plus and
Using the V$DB_CACHE_ADVICE View → The V$DB_CACHE_ADVICE view shows the simulated miss rates for a range of potential buffer cache … is not used if the number of buffers in a buffer pool is small to begin with. To use the V … workload on the database instance. Allow the workload to stabilize before querying the V … $DB_CACHE_ADVICE view. Query the V$DB_CACHE_ADVICE
8.29 V$LGWRIO_OUTLIER → V$LGWRIO_OUTLIER contains entries corresponding to Log Writer (LGWR) process I/Os that have taken a … the applicable container ID for the rows containing data See Also: \" V$IO_OUTLIER \" \" V$KERNEL_IO_OUTLIER \"
8.112 V$PQ_SESSTAT → V$PQ_SESSTAT lists session statistics for parallel queries. After you have run a query or DML … operation, you can use the information derived from V$PQ_SESSTAT to view the number of slave processes