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/
========================================================== ================================
Snap-):
$ ("# Draggable"). draggable ({snap: true}); // default, adsorption in any way
$ ("# Draggable2"). draggable ({snap: '. ui-widget-header'}); // adsorption with the inner and outer diameter of an element
$ ("# Draggable3 ″). draggable ({
Slider object, which is similar to the previous creation of tween, morph, and drag. same when moving:
Reference code:
The Code is as follows:
// Assign an element to a variableVar sliderObject = $ ('slider ');Var knobObject = $ ('knob ');// Create a new slider object// First define the slider Element// Then define the slider ElementVar SliderObject = new Slider (sliderObject, knobObject ,{// Here is your option// We will give you a closer look at these options later.Range: [0, 10],
HTML5 Application Development: JavaScript library iScroll tutorial, html5iscroll
Directory
1. Introduction to iScroll
2. Installation and Use
3. Simple iScroll example
4. Pinch Zoom
5. Snap to element
6. iScroll detailed parameters
1. iScrollIntroduction
Generally, when developing a traditional Web site, we occasionally fix the width/height of a certain area, and then borrow the overflow: scroll, you can move the scroll bar to view the content that e
IPFs Private Network setup:
1. Prepare at least 2 IPFs nodes
2. Create a shared secret key
3. Configure the nodes that need to be shared with each other.
First, prepare the IPFs node.
1, prepare two Linux nodes, I test the system is Ubuntu 18.04 LTS (click can download).
2, install the IPFs command: (if installed can Shanghai aluminum ignore)
sudo snap install IPFs
3, install the Go-lang environment, the subsequent creation of the shared secret key ne
This is a created
article in which the information may have evolved or changed.
Not long ago, Google's Go won the TIOBE leaderboard, becoming the 2016 programming language of the year. Go is loved by everyone because of its ease of learning and pragmatism. Aside from voluminous's theory, Go is more focused on practical experience, so more and more users are applying it to industrial environments. The same is true in Canonical! As a go supporter, we did five cool projects with go:
1, Juju
Juj
.
Workload repository report
DB Name DB Id Instance Inst Num Release RAC Host---------------------------------------------------------------------ST990 2152526631 ST990 1 10.2.0.3.0 NO v2011db02p
Snap Id Snap Time Sessions Curs/Sess---------------------------------------------Begin Snap: 21787 21-Feb-13 20:00:22 50 19.5End Sn
is best not to damage each line of the twist degree, note: if it is forced to change the twisting distance to ensure chromatography, the core line should be twisted, rather than let it be dispersed. Use a hand or dedicated tool to snap each line in place, use a eccentric clamp to cut off the redundant line, and manually or use a dedicated tool to install other parts of the module in place.4. According to the configuration of the manufacturer, the shi
password for perfstat.
Input tablespace and temporary tablespace
SPCPKG complete. please check spcpkg. lis for any errors. the preceding statement is successful. the lis file is executed and re-built. If an error occurs during creation, we can delete and re-create the file:
@ $ ORACLE_HOME/rdbms/admin/spdrop. SQL: Click Create again.
Generate the survey report and switch to the perfstat User:
Collect System Information: execute statspack. snap;
View
(if any ).
In addition, you can use the explain plan statement to obtain the execution plan. By default, the execution plan is saved to plan_table. You can use the DBMS_XPLAN package to view the result. For example:
Explain plan for select * from emp where deptno = 10;
Select * from table (dbms_xplan.display );
3) Configure statspack
Install
Statspack can be installed only when it is connected as SYSDBA.
Run the spcreate. SQL script in the [ORACLE_HOME] \ rdbms \ admin directory.
During the i
backup.
To ensure security, first apply a read lock to the database
Mysql> flush tables with read lock;
Refresh the binary log to facilitate time point recovery.
Mysql> flush logs;
Create a snapshot volume
Lvcreate-L 1G-s-n data-snap-p-r/dev/myvg/mydata
Finally, release the read lock in the database.
Unlock tables;
Mount snapshot volumes for backup
Mount-r/dev/myvg/data-snap/mnt/
exist in DBA_HIST_DATABASE_INSTANCE '); end if; CLOSE cidnum; -- Check Snapshots exist for Database Id/Instance Number OPEN csnapid; FETCH csnapid: max_snap_time; IF csnapid % notfound then Raise_application_error (-20200, 'no snapshots exist for Database/instance' |: dbid | '/'); end if; CLOSE csnapid; END;/whenever sqlerror continue; -- Ask how many days of snapshots to displayset termout ON; column instart_fmt noprint; column inst_name format a12 heading 'instance'; column db_name format a12
the Follower; the Leader sends an update command to the Follower based on the LastZXID sent by Follower according to the data update policy;Synchronization policy:1. SNAP: If the Follower data is too old, the Leader will send the snapshot SNAP command to the Follower to synchronize data;2. DIFF: The Leader sends the DIFF command from Follolwer. lastZXID to Leader. lastZXID to synchronize data to Follower;3
Check the alert Log in the production environment today and find the following error. This error does not need to be explained too much. Obviously, this is because of the classic issue of sessionleak.
Check the alert Log in the production environment today and find the following error. This error does not need to be explained too much. Obviously, this is because of the classic problem of session leak.
Check the alert Log in the production environment today and find the following error. This
isThe local One:'1302125221'. To use Thisdatabase ID, Pressreturn> ToContinue, otherwise enter an alternative. Enter value fordbid1302125221Using1302125221 forDatabase idspecify The number of days of snapshots to choose from~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~Entering the number of days (n) would resultinchThe most recent (n) days of snapshots being listed. Pressingreturn>withoutspecifying A number lists all completed snapshots. Enter value forNum_days:1Listing the last day's
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