.NET/Java PDF, Tiff, Barcode SDK Library

USERNAME SERIAL# LATCHWAIT PROGRAM --------------- ---------- -------- ----------0 PSEUDO SYSTEM 1 ORACLE.EXE SYSTEM 1 ORACLE.EXE SYSTEM 1 ORACLE.EXE SYSTEM 1 ORACLE.EXE SYSTEM 1 ORACLE.EXE SYSTEM 1 ORACLE.EXE SYSTEM 1 ORACLE.EXE SYSTEM 5 ORACLE.EXE SQL>

generate barcode in excel 2010, barcode add-in for word and excel 2010, convert text to barcode in excel 2016, barcode add in for excel, barcode add in for excel free, free excel barcode generator download, barcode in excel 2010 freeware, barcode font excel 2010 download, microsoft excel 2013 barcode generator, how to barcode in excel 2010,

Using this method, you can obtain a NET object that allows the investigation of almost any static aspect of a managed type Starting from the type s identity, name, and characteristics, all its type members can be inspected down to the level of method implementations Furthermore, types can be instantiated and invoked dynamically based on runtime type information objects GetHashCode: As the name says, GetHashCode is supposed to return a hash code of the object Like ToString, it is a virtual function The FCL has a couple of collection classes that internally use this function Equals: Various collection classes in the FCL use Object::Equals for search operations Notice that if you override Equals, you must override GetHashCode, too However, both methods should only be overridden for types whose instances are immutable by definition.

V$PROCESS_MEMORY is a new view that shows how PGA memory is being used by each process, by showing the distribution of PGA memory in categories such as SQL, PL/SQL, OLAP, and JAVA. 22 shows an example of using this view.

You can use the V$UNDOSTAT view to monitor the AUM feature. The view shows undo space consumption, transaction concurrency, and length of queries executed in your instance.

The V$TRANSACTION view lists information about the active transactions in the database. The following query shows you the physical and logical I/Os incurred by the transaction: SQL> SELECT start_time, status, log_io, phy_io 2 FROM V$TRANSACTION;

system to seconds elapsed since the beginning of the UNIX epoch, the calculation becomes a simple subtraction.

The V$RSRC_PLAN view shows you all the active resource plans in the database. You can join this to the V$RSRC_CONSUMER_GROUP view, which provides the resource-usage statistics for all the resource plans in the database. Listing 23-33 shows the V$RSRC_CONSUMER_GROUP view. Listing 23-33. The V$RSRC_CONSUMER_GROUP View SQL> DESC V$RSRC_CONSUMER_GROUP Name Null ----------------------------------------- -------NAME ACTIVE_SESSIONS EXECUTION_WAITERS REQUESTS CPU_WAIT_TIME CPU_WAITS CONSUMED_CPU_TIME YIELDS QUEUE_LENGTH CURRENT_UNDO_CONSUMPTION SQL> Type -----------VARCHAR2(32) NUMBER NUMBER NUMBER NUMBER NUMBER NUMBER NUMBER NUMBER NUMBER

Metrics provide the rates of change for base database statistics. I briefly explain some of the key metric-related views in the following sections.

The V$METRICNAME view is ideal for finding out the metric name for all database metrics, based on their metric ID.

Some collection classes in the FCL expect that two objects that are equal have the same hash code Furthermore, the value that GetHashCode returns for an object is expected to remain unchanged, even if the object s data changes Unless a type is implemented so that its instances are immutable, it is impossible to provide nontrivial overrides for GetHashCode and Equals so that both requirements are met Neither C++/CLI, C#, nor VB NET map the == operation to Object::Equals..

The V$SYSMETRIC view shows system metric values captured for the most current time interval (interval sizes are in hundredths of a second). Here s an example: SQL> SELECT metric_name,value FROM V$SYSMETRIC; METRIC_NAME ------------------------Buffer Cache Hit Ratio Memory Sorts Ratio Redo Allocation Hit Ratio User Transaction Per Sec Physical Reads Per Sec Physical Reads Per Txn . . . SQL> VALUE -----14 100 100 0 622 12406

Caution Yes, the Network Time Protocol (NTP) keeps system clocks in sync. However, not all systems

The V$SYSMETRIC_HISTORY view shows all system metric values available in the database. The V$SERVICEMETRIC and the V$SERVICEMETRIC_HISTORY views show corresponding information for service-level metrics. The V$WAITCLASSMETRIC view displays metric values of wait classes for the most recent 60-second interval. V$WAITCLASSMETRIC_HISTORY displays metric values of wait classes for all intervals during the last hour. You can view the on-disk values of all metrics through the DBA_HIST_* views.

The V$ALERT_TYPES view shows details about all database alert types, as shown here: SQL> SELECT type, scope, internal_metric_name FROM V$ALERT_TYPES; TYPE --------Stateful Stateless Stateful Stateful Stateful Stateful Stateful Stateful Stateful Stateful Stateful Stateful Stateful SCOPE -------Database Database Instance Instance Instance Instance Instance Instance Instance Instance Instance Instance Instance INTERNAL_METRIC_NAME -------------------Free_Space threshold session_usage process_usage pgacachehit_pct shared_free_pct libcache_miss_pct libcache_hit_pct dictionarymiss_pct dictionaryhit_pct response_time_pt cpu_time_pct user_wait_time_pct

Stateful Instance Stateful Instance Stateful Instance Stateful Instance . . . 133 rows selected. SQL>