What about the crash? The following will tell you the Mac system crash Restart method, if encounter Mac system panic How to do? How to restart? Many friends are not very familiar with the Mac operating system, if you encounter the problem of panic, you may wish to refer to the following steps.
Method One, hold down the space bar to the left two keys +esc, appear and win the same function of the System Application Manager, forced to quit the program, this can only solve when you use the program
'ktu smu header Block' Incident details in: /oracle/app/diag/rdbms/skate04/skatedb/incident/incdir_40497/skatedb_pr0d_25721_i40497.trcThu Oct 11 14:06:52 2012 ...... the standby database www.2cto.com cannot be applied to restart standby, and the database can be alter database mount standby database. However, when open read is only, the above error is always reported on standby, execute the following SQL statement or recover standby database. To solve
minimum SCN of the rollback segment is larger than the query SCN, upper Bound SCN cannot be estimated, so it cannot be determined whether the query can use this block, resulting in a ORA-1555 error.Solution:In general, this situation is very difficult to solve. If you do want to solve it, you can perform a full table scan after the DML operation to clear the last uncleared block.You can set delayed_logging_block_cleanouts to true (default)(4). the rollback segment has bad blocks.
To sum up, we
UNDOTBS1ORA-01110: data file 3: '/u01/app/oracle/oradata/xxxx/undotbs01.dbf'ORA-10560: block type 'KTU SMU HEADER BLOCK'MRP0: Background Media Recovery process shutdown (xxxx)
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Iii. Problem Analysis
The db_lost_write_protect parameters of the master-slave database are set to typical.
SQL> show parameter protec;
NAME TYPE VALUE
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equipment
Figure 2: cat5e unshielded jumper
1000 M
The main network cable uses the AVAYA cat5e unshielded twisted pair wires, and the position of the switch in the working subsystem uses the AVAYA cat5e information module and cat5e jumper. The vswitch is connected to the client only
100 M
Only AVAYA cat5e unshielded twisted pair wires are used. The core switch is H3C S1216, and the peripheral switch is S1026T. Out of limited budget, no racks and cabinets are used. During const
.
To put it simply, when the data file corresponding to the UNDO tablespace is not automatically extended and the UNDO tablespace is relatively large, the value of tuned_undoretention is calculated based on the percentage of the UNDO tablespace size, in some cases, the value of tuned_undoretention is adjusted to a very large value.
Solution: If _ smu_debug_mode = 33554432 is set, the automatic undo retention adjustment function of Oracle is still enabled, but the tuned_undoretention calculation
the test results are the basis for measuring whether the base station is qualified. At the same time, we also need other richer test functions, to meet R D and troubleshooting needs. As a result, rode and Schwarz have released two RF testing solutions, namely FSMU and a single solution base station integrated tester CMU300, to meet the needs of different departments of different companies.
1. FSMU test combination
Rode Schwarz's FSMU is composed of a vector signal source SMU200A and a vector
it to be calculated so large.
To fix this behaviour, Set the following instance parameter:
_ Smu_debug_mode = 33554432
With this setting, TUNED_UNDORETENTION is not calculated based on a percentage of the fixed size undo tablespace. Instead it is set to the maximum of (MAXQUERYLEN secs + 300) and UNDO_RETENTION.
Simply put, when the data file corresponding to the UNDO tablespace is not automatically extended and the UNDO tablespace is large, the value of tuned_undoretention is calculated based
into tuples in the print (args) func2 (, 40, "hello", ["momoda ", "memn"]) # by default, func2 (* [1, 2, 3, 4, 5]) is transmitted as a tuples # args = tuple ([1, 2, 3, 4, 5]) def func3 (** kwargs): # dictionary parameter: converts N keyword parameters into a dictionary. print (kwargs) func3 (name = "jean", age = 22, sex = "M") func3 (** {"name": "jean", "age": 22, "sex": "M "}) # You can also retrieve the value def func4 (** kwargs): print (kwargs ["name"]) print (kwargs ["age"]) in the diction
there is no association between the data can greatly improve the non-sexual, if you need to aggregate operations to access multiple nodes, there is a cost.More details can be found in the article.Oracle 12c "In-memory Database"In-memory is a 12 option that uses column storage to supplement disk-based row-type storage, primarily for Hana. So not all of the data is in memory. Each table has both row and column formats, which are transparent to the user and do not need to be changed by the applica
Download the installer from the App Store on your Mac
Inserting a USB flash drive
Start the terminal
Input commandSudo/applications/install\ os\ x\ el\ capitan.app/contents/resources/createinstallmedia--volume/volumes/iplaysoft- -applicationpath//applications/install\ os\ x\ el\ Capitan.app--nointeraction
Production completed reboot always press ALT key to enter the interface to install
Note:
Specific reference to http://www.iplaysoft.com/osx-yosemite-usb-install-drive.html
To a friend's Apple installed a dual system, after loading accidentally in Windows to turn the partition into a dynamic disk, unable to enter the system1, using the U-disk boot into the WIN8PE, open Diskgenius, search lost partition, search to all reservations, you should be able to search the EFI and bootcamp these two partitions, save changes after the restart can enter the Windows2, at this time in accordance with the online method to enter the PE
How does mac install win8.1 dual system? Now, a lot of people are using Mac computer, some users also installed a dual system. But we all know that by bootcamp normal installation of dual systems, MAC only two partitions, respectively, Mac system disk and win system disk. What if you need to do more than one partition? The following small series for everyone to bring Mac installation win8.1 dual-system multiple partitions tutorial. The following is a
Users who are accustomed to using the Windows operating system will feel particularly uncomfortable using Mac OS, even though some users of Apple Mac want to install it as a Windows operating system, but some users don't know how to install the WINDOWS10 operating system on a Mac computer. , so the Hedong Software Park for everyone to organize the "Microsoft Help and support to provide" approach to the Tutorial! Need a friend to see under!
The method of installing WIN10 system on Mac computer
Users of the Mac believe that many have encountered the internal failure of the speaker, do not know that there is no careful user will find a Mac with the horn failure and the headphone hole will light up the red light, as shown in the following picture, that Mac headset Kong Liang red light is what reason? The following PC6 small make up to bring everyone mac headset Kong Liang red light , while the speaker has no sound solution.
To solve this problem, first of all, divided into
next boot camp appears with the "create partition for Windows" interface,
This is the partitioning of your hard drive,
This partition is Win7 's shelter! My hard drive type 500GB, md387 standard is 500GB. This partition can choose any size of its own.
How to select the size of the partition, is to use the mouse to hold the center of small Dots,
(The small dots in the red circle below) drag around to divide the space of the partition disk! Then click Install!
The following is th
Many users who use the MacBook have encountered internal speaker failure, and the MacBook's built-in speaker fails, and its headphone holes will also light up red, as shown in the following figure. So what causes the MacBook's headphones to Kong Liang the red light? What should I do if the MacBook speaker doesn't sound? Here's a look at the solutions offered by users:
To solve this problem, we have to consider two kinds of situations: Dual systems and non dual systems, th
Many students use Mac computer to install Windows dual system, but we all know through Bootcamp normal installation of dual system, MAC only two partitions, respectively, Mac system disk and win system disk. What if you need to make more than one partition? The following small series will bring you a Mac installation win8.1 dual system for multiple partition usage tutorials. The following is a detailed tutorial.
1. Copy the data from the origina
1. Use the Mac book air A1465 bootcamp to make the startup USB drive:Need a USB flash drive a 8g,windows 7 original image ISO installation file, according to bootcamp operation prompts to select files and USB flash drive,Note the selection of the USB stick fat format, independent partition, long partition of the U disk do not know anything else, download software supported by Windows, the next step in the W
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