The GC (Global Catalog) server holds a read-only copy of an object's property set. Here are a few things to explain clearly:
First of all, this copy is read-only, not writable, just for quick query purposes.
Second, the GC-stored objects are all object in domain in forest
Again, every object has a lot of ATTRIBUTE,GC to save just a few of these object attributes
Since the GC is only partially attribute, which attribute is included?
(1) isMemberOfPartialAttributeSet attribute set to True is
tables with read lock; MariaDB [(none)]> flush logs; Record binary Log location Mysql-e ' Show Master status ' > Mysql.txt Create a Snapshot [Email protected] ~]# lvcreate-l 1g-s-N mydata-snap-p r/dev/myvg/mydata Unlock MariaDB [(none)]> unlock tables; Mount a snapshot and back up mount/dev/myvg/mysql-snap/media/ tar-jcf/tmp.mysq.tar.xz/media/* Uninstalling and deleting snapshots
1 2 3 4
different ports. In the experiment ping1.1.1.3 to eth2 sent, the source Mac for 00:d0:f8:00:0c:0c,ping1.1.1.4 is sent to eth1, the source Mac for 00:d0:f8:40:f1:a0, and so on, So the traffic load from the server to two lines, but because the service sends ARP only with 00:D0:F8:40:F1:A0, so that the client buffer record is 00:d0:f8:40:f1:a0 to the IP, the package when the target mac:00:d0:f8:40:f1:a0. The traffic entering the service is only going to eth1 (00:D0:F8:40:F1:A0). The device is alwa
group;Vgchange: Configure whether the volume group is started (active);Vgremove: Deleting a volume group4.3 Management of logical volumes:Lvcreate: Create a logical volume.Lvscan: Queries the logical volume above the system.Lvdisplay: Displays the status of the logical volume above the systemLvextend: Add capacity inside the logical volume.Lvreduce: Reduces the volume inside the logical volume.Lvremove: Deletes a logical volume.Lvresize: The size adjustment of the LV.5. An example5.1 Exercises:
workspace. He also has 25%, 50%, 100%, 200%, 400%, 800%, show Frame, Show all options. We use 100%, show frame and show all.
Three, choose View Mode
outlines: Shortcut key (ctrl+shift+alt+o), display contour;
fast: Shortcut key (ctrl+shift+alt+f), quick display;
antialias: Shortcut key (ctrl+shift+alt+a), anti-aliasing display;
AntiAlias Text: Shortcut key (ctrl+shift+alt+t), anti-aliased text display.
the above four options are rarely used in the implementation process, AntiAlias t
same as in the Scrollto method. Snap To
Iscroll can be aligned to a fixed position and element.
Options.snap
The simplest alignment configuration is as follows:
var myscroll = new Iscroll (' #wrapper ', {
snap:true
});
This automatically splits the scroll bars according to the size of the page container. The Snap property can also pass a value of a character type type. This value is the selector of t
, baseline_name);
@?/rdbms/admin/awrddrpt AWR Report
@?/rdbms/admin/awrgrpt RAC Global AWR
Automatically generate AWR HTML reports:
Http://www.oracle-base.com/dba/10g/generate_multiple_awr_reports.sql
1. Summary of the report
Workload REPOSITORY for DB Name db Id Instance Inst Num Startup time release RAC----------- -------------------------------------------------------------MAC 2629627371 askmaclean.com 1 2 2-JAN-13 16:49 11.2.0.3.0 YES Host Name Platform CPUs cores Sockets Memory (GB)--
online, but the other side ping can not be connected, so that many attacks to avoid. First step: Add standalone snap-in Start-run, enter: MMC, start open the console window. Click Add/Remove Snap-ins under the Console menu, click the Add button, select the IP Security Policy Management item in the pop-up window, and clicking the Add button. In the open window, select the management object as the local c
calculate the average redo write size by using the following formula:
Avg.redo Write size = (Redo Block Written/redo writes) *512 bytes
If the system produces a lot of redo and writes less each time, it is generally stated that LGWR is activated too frequently.
may result in excessive redo-related latch competition, and Oracle may not be able to effectively use piggyback functionality.
We extracted some data from a statspack to study the problem.
1. Main information
DB Name db Id Instance
DB Name db Id Instance Inst Num release Cluster Host
------------ ----------- ------------ -------- ----------- ------- ------------
Pormals 3874352951 pormals 1 9.2.0.4.0 NO njlt-server1
Snap Id snap time Sessions curs/sess Comment
------- ------------------ -------- --------- -------------------
Begin snap:36 1 August-July-04 20:41:02 29 19.2
End
Statspack 10 items that must be viewed in the output result
1, load between files (load profile)
2, instance efficiency click Rate (Instance efficiency hit ratios)
3, the first 5 waiting events (Top 5)
4, Waiting for events (wait event)
5. Latch-Lock wait
6, the first SQL (top SQL)
7. Example activities (Instance activity)
8. Document I/O (file I/O)
9, memory allocation (Memory allocation)
10. Buffer Waits
1. Report Header information
Database instance related information, including
1, fault phenomenonThe foreground system application cannot log in, the running state of the WebLogic server application is displayed as overload and the thread connection pool is full.2, the cause of failure analysisBased on the above symptom, the analysis base can be determined that the WebLogic has too many connections to the database because the session remains free and the connection pool fills up, causing the new connection to fail to request to the connection pool. The key here is to anal
two days are listed, and so on. Let's enter 2 here, for example:Select a start and an end snapshot number for which the database cannot be restarted during the time period of the two snapshot numbers.Follow the prompts to generate a report and enter: Exit to exit the database.Sql>exitUse the FTP tool to upload the reports under Linux to Windows to open.Oracle database automatic load reports are as follows: WORKLOAD REPOSITORY report for
DB Name
DB Id
Instance
Inst
variables are read, written, or changed, which are commonly used to locate bugs.
Break when watch
Rwatch
Awatch
You can view the current observer information by using the info watchpoints [n] command. Snap Point (catchpoint): Snap points are used to catch some events while the program is running. such as: Loading shared libraries (dynamic link libraries), exceptions for C + +, an
the CMSTask.cpp file.There is another: B taskmanager::buildpubwintaskmeans to stop when the Buildpubwintask function is run.To cancel a breakpoint:Dis 1 means to cancel the first breakpointDis 2 means canceling the second breakpointView Set Breakpoint Information: Info b2, set the observation point (watchpoint)The observation point generally observes whether the value of an expression (the variable is also an expression) has changed, and if there is a change, the horseStop the program. We have
the first breakpointDis 2 means canceling the second breakpointView Set Breakpoint Information: Info b2, set the observation point (watchpoint)The observer generally observes whether the value of an expression (the variable is also an expression) has changed, and if there is a change, the horseStop the program. We have the following methods to set the observation point:WatchSet an observer point for the expression (variable) expr. When the value of a quantity expression changes, stop the progra
systems defined in the/etc/fstabTo create a snapshot volumeAttention:1, the life cycle is the entire data length, in this time period, the data growth cannot exceed the snapshot volume size2, the snapshot volume should be read-only3, in the same volume group as the original volume#cp/ect/inittab./Explanation: Copy the/ect/inittab to the current directory#cp/etc/issue./#lvcreat-L 20m-n test-snap-s-P R/DEV/MYVG/TESTLVExplanation: The size of the-l snap
TABLES with READ LOCK; Refresh binary logs for Point-in-time recovery Mysql>flush LOGS; Then create the snapshot volume Lvcreate–l 1g–s–n Data-snap–p–r/dev/myvg/mydata Finally enter the database to release the read lock UNLOCK TABLES; Mount a snapshot volume for backup Mount–r/dev/myvg/data-snap/mnt/snap Then, the files under the/mnt/
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