Oracle 11g archive log study _ 2, oracle11g ARCHIVE _ 2
Starting from Block 1, the block stores all oracle Operation Records. The block structure is very simple. There are only blocks and blocks:Typedef struct bk {Redo_bh blockhead; uint8_t buf [496];} Redo_bk; Redo_bk
The block header is consistent with the one described in the previous article:Typedef struct bh {uint32_t signature; // signature uint32_t blocknum; // block number uint32_t sequenc
breakpoint location is protected, and the data read is incorrect.
Heap initialization error
After the verification is passed, Vivi jumps to the SDRAM region address 0x33f00000 and continues to execute. It enters the main function and then hangs out in heap_init. After adding the debugging code, you will find that the reason is that the initial value of gheapbase is incorrect and heap_init fails, but the definition in the code is "static blockhead
C --- 0 scn 0x0000. 005bbf0b
0x03 0x0011. 007.00000406 0x0140015b. 00c7. 57 -- U-483 fsc 0x0000. 005bdee1
Data_block_dump, data header at0xdc34474
-- In fact, this block is not directly dumped from the data buffer, which indicates the starting position of the block's data zone during the real dump, that is, the starting position of the following part.
====================
Tsiz: 0x1f88
-- Tsiz: hsiz: pbl: bdba: No data files are stored.
-- Total data area size
-- 8 K block: 8192-20 (
blocksize; // the size of each block (in bytes), 512/1024... uint32_t blockcount; // The total number of blocks of the current file (excluding the first block) uint32_t unknown5; uint8_t nouse [480];} Redo_fh0;Redo_fh0
The data format of the 2nd block is as follows:Typedef struct scn {javasscnbase; javasscnwrapper; javasfiller;} Redo_scn; typedef struct fh1 {Redo_bh blockhead; uint32_t unknown0; javascomvsn; // Compatibility Vsn mongodbid; mongodbna
separate HTML, the project page inherits the base base template Rewrite page Content section (this part of the actual page contents) 1. The basic template is as follows; {%blockhead%}{%include ' Base/_head.html ' %}{%endblock%}{% blockcss%}{%include ' base/css.html ' %} {%endblockcss%}:x{%blockcontent%} {%endblockcontent%}{%block sidebar%} {%include ' base/sidebar.html ' %} {%endblocksidebar%} {%blockfooter%} {%include ' base/footer.html ' %} {% en
Thereflectingψ-axis Rotor (8). Afterreflection, it passes ANOTHERΛ/4 Plate (4) for the second time, which now causes itto join the othe R Beam again, resulting ininterference between the. Withmirrors, the beams (ten) can now is transported to the receivers.basically, one part of the beam travels St Raight through Beamsplitter (3), while The other part makes a detour between Thereference mirror and theψ-axis rotor, resulting in OPD between the beams. This is a direct measurement of the probedisp
Label:Starting with the 3rd block, the block stores all of Oracle's operational records. The block structure is simple, with only the size and block body: struct BK {
redo_bh blockhead;
uint8_t buf[496];
} REDO_BK; REDO_BK The size is the same as the one described in the previous article: struct BH {
uint32_t signature; // Signature
uint32_t Blocknum; // Block number
uint32_t sequence; // Sequence Number
uint16_
The development of mobile communication technology has gone through three stages, that is, the industry called Three generations, the first generation is analog wireless network such as amps, TACs, the second generation is digital communication, including GSM, CDMA, the third generation is the packet-type mobile service, referred to as 3G. As mankind entered the 20th century, the third generation of mobile communication technology and users will be a
thermal design power dissipation of 25 watts, 37-Watt, 47-Watt and 57-watt models [7] While the desktop version has a thermal design power consumption of 35 watts, 45 watts, 55 watts, 65 Watts, 77 watts, 95 watts, and maximum performance (including Advanced Server platforms) up to 100 watts of TDP models, Up to 160 watts of Haswell-ep/ex, up to 190 amps of current, but news points out that because of the increased display core, the thermal design pow
analogue input touchpanel connection: Y + (top) for 4-wire/top right for 5-Wire16 x-/TL analogue input touchpanel connection: X-(left) for 4-wire/top left for 5-Wire17 y-/BL analogue input touchpanel connection: Y-(bottom) for 4-wire/bottom left for 5-Wire18 tpgnd supply touchpanel driver ground19 pcbeep analogue input line input to analog audio mixers, typically used for BEEPS20 monoin analogue input mono input (RX)21 mic1 analogue input microphone preamp a input 122 miccm analogue input micro
found that it is composed of a radiation generator + 10 precision resistors + A reference voltage + 10 op amps, and the figure on the Internet is very vague, I found out that it was so simple. I immediately went to an English manual to read it, and I found that it was a waste of time, in fact, you can simply check the internal structural diagram instead of checking the information :)
Conclusion: You still need to check the clear internal architectur
, the fuel cell stack voltage is 25-30 volts. The Fuel Cell Stack is composed of 40 batteries. The output power of each battery is 3 watts or more, the voltage is about 0.5-0.7 volts, and the current is about 6-7 amps. Because the battery has a reaction area of 10x10 cm, its power density may be less than 30 MW per square centimeter.
At the same time, the 300 watt fuel cell system is also activated after water and air are added through the pump. Durin
: the starting voltage and final voltage of the capacitor, the current learned from the capacitor, And the capacitance value.
Assuming that RTC consumes Fixed Current when working in vbackup, you can use the following formula to calculate the backup time under the worst working condition, expressed in hours:
[C (vbackupstart-vbackupmin)/ibackupmax]/3600
In formula, C is the capacitance value in Farah.Vbackupstart is the initial voltage, measured in volts. The voltage applied to VCC is used to
of time, several groups of batteries with a voltage of 4.5 V can be used in parallel (Figure l07 ). For a large model, you can select a motor based on the model size, model type, and model speed requirements. For example, the available power of a civil ship model with a length of about 2.4 meters is 30 ~ 50-watt motor; a warship model with a length of about 2.4 meters can use a power of 70 ~ 100 watt motor.A high-power motor can be powered by a rechargeable battery. Commonly Used lead-acid batt
God detoxification.
The only one left, seems to mean that all the others have been eaten, at present there is no rule to try out, waiting for the great God detoxification.
Utility and Veh ...
Looks like these two are going to look together. Deconstruct Quelea Network
The first one is to turn the flock into a bird.
Quelea network, did not understand, it seems that each bird into a group, the solution read.
Apart from
Post three op a
heat due to the PDU's long-term work.
Lightning Eliminator SPD), always protect Electrical Equipment
Surge is an instantaneous over-voltage or over-current phenomenon that exists in the circuit at any time. It usually only occurs within several microseconds. However, due to high energy, it often causes a hard injury to the precision circuit. People are equipped with lightning arresters in the building, but they cannot solve the internal electrical interference. Only when the electrical termina
value, wherein the preferred value is the most important, the same.4. Line width (width Constraint of routing label)It specifies the width of the traces when manually and automatically routed. The entire board range of preferences generally take 0.2-0.6mm, add some network or network group (NET Class) line width settings, such as ground, + 5 volt power cable, AC power input line, power output line and power group, etc. Network group can be defined in advance in Design-netlist Manager, the groun
power on the line, the battery is small and the UPS host in the same box, so that most people are not aware of the existence of the battery. To a 2000 square meters of Securities sales Department of all IT equipment to provide power security services to the UPS to have 200KVA (200,000 KVA, volts, amps, are high school physics units. Specific this number do not remember, just temporarily to check a few years ago the technical documents, the battery ma
scenarios where phase consistency is emphasized, phase effects need to be considered.5, grounding, the eternal topic.Reasons for the self-excitation of op-amp shocks:1, the loop gain is greater than 1 2, the signal before and after the phase difference of 360 degrees, that is to be able to form positive feedback.Reference to "the principle of self-control" and "Circuit design based on OP amps and analog integrated circuits"The self-excited oscillatio
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