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ORA-02049: Timeout: Distributed Transaction Processing waiting for Lock diagnostics In the formal environment, there are two databases A and B. dblink is built on Database A. The business is to update some tables in database A to database B through dblink, always reports an error when updating: ORA-02049: Timeout: Distributed Transaction Processing wait timeout. Before I wrote A blog: ORA-02049: Timeout: Distributed Transaction Processing wait lock

Aerohive classificationAllUnknown UnknownAssociation AssociationClient overrun maximum clients count exceededAccess Control list denies client denied by Access controls listClient-side functionality does not match clients capabilities mismatchUnsupported authentication algorithm authentication algorithm unsupportedAuthentication CertificationUser not found foundInvalid voucher Invalid credentialIllegal domains Invalid domainEAP type incorrect incorrect EAP typeInvalid certificate Invalid certifi

: Add SSH key to your GitHub accountFirst copy the public key to the Pasteboard:$ clip Or it can be solved with text editing tools.Then in the top right corner of the GitHub account page, click Configure (settings, gear graphics), click "SSH Keys" in sidebar, then click "Add ssh Key", enter a title you like in the "title" field, "key" Bar to paste the public key that you just copied, and then click the "Add Key" button.Fourth step: Check if SSH key is set successfully$ ssh-t [email protected]# a

following code to add user information:Using (spmonitoredscope scope = new spmonitoredscope ("customer critical ")){ Spcriticaltracecounter. adddatatoscope ( 2010, "Critical error ", 15, "An critical error occurred "); } Adddatatoscope static functions are defined as follows:Public static void adddatatoscope (uint tagid, string category, int tracelevel, string message ); In the above definition codeThe first parameter is a user-defined tag value (custom tag ID) used to identify record items.The

CentOS performance diagnostics latest tool command set# View the current system load uptime # view the system status and system resource usage of each process top # visually display the CPU usage htop # view the load information of each CPU mpstat-p all 1 # view disk IO statistics every 1 second iostat-xkdz 1 # view virtual memory usage information every second vmstat 1 # view memory usage statistics free # view network usage information nicstat-z 1 #

Oracle GoldenGate (OGG) diagnostics This document briefly lists the issues that are frequently seen when using Oracle GoldenGate (OGG) and the diagnostic steps and tools. It describes the key file used to find the cause of failure for the OGG Group. Understanding how OGG captures and transfers data helps you understand why problems occur and how to avoid them. Correct installation and configuration of OGG, combined with logs, can greatly help solve th

Open the Start menu, Control Panel, in the System and security, select Find and solve problems; Turn on the hardware and sound, under the sound option, choose to play the audio, in the Play Audio dialog box, click Next; In the Failure dialog box, select Headphones and click Next; At this point, it gives the diagnostic information: the peripheral is not plugged in, and the recommended fix: Plug in the speakers or headphones. At this point, if you insert headphones or speak

oracle| execution Oracle Diagnostics Case-job task stops executing Last Updated:friday, 2004-11-26 9:48 eygle Yesterday, a researcher reported that the database timed tasks did not perform properly, causing some operations to fail. began to intervene to deal with the accident. System environment: SunOS DB 5.8 generic_108528-21 sun4u SPARC sunw,ultra-4 Oracle9i Enterprise Edition Release 9.2.0.3.0-production 1. First step in checking database

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oracle| Notes | server | statistics | performance Oracle Performance Diagnostics-Learning Statspack Notes (iv) [Extended Statspack Collection Server statistics] Author: Liu Yingbo Time: 2004-3-22 Mail:liuyingbo@126.com, please correct me. Reprint please indicate the source and the author Note: Because Statspack does not have all the information needed to fully analyze performance issues, it needs to extend its collection server statistics.

Oracle| Notes | performance Oracle Performance Diagnostics-Learning Statspack Notes (iii) [Classification of tables] Author: Liu Yingbo Time: 2004-3-10 Mail:liuyingbo@126.com, please correct me. Reprint please indicate the source and the author Description: Statspack does not capture all the information needed to fully analyze performance issues. In particular, the problem is external to databases such as DISK,RAM,CPU and network. Classi

Detection and Resolution (CDR) 2Lesson 18: Configuring Conflict Detection and Resolution (CDR) 3Lesson 19: Configuring Conflict Detection and Resolution (CDR) 4Lesson 20: Configuring Online Data Synchronization 1Lesson 21: Configuring Online Data Synchronization 2Lesson 22: Implementing database initialization with a databaseLesson 23: Implementing database Initialization with GoldengateLesson 24: Database initialization with database Tools for loading data from filesLesson 25: Mapping and mani

memory. It can also be used as one of the reference indicators when making memory bottleneck decisions. 　　 Summarize The above mentioned several memory bottleneck pressure judgment indicators, but also only involves a part of memory-related counters, of course, including but not limited to the above values . If you do a memory bottleneck, you can have more reference values, The previous article also said, under memory pressure, SQL Server is a self-tuning application, and the value of each cou

, buffer_gets, disk_reads, Parse_calls fromV$sqlareaWHEREBuffer_gets> 10000000 ORDisk_reads> 1000000ORDER byBuffer_gets+ - *Disk_readsDESC;--most CPU-intensive SQL statements in the last 10 minutes:SelectSql_text from ( SelectSQL_ID,Count(*) ascn fromv$active_session_historywhereSample_time>Sysdate- Ten/ -/ - andSession_type 'BACKGROUND' andSession_state= 'On CPU' Group bysql_idOrder bycndesc) Ash, V$sql swhereash.sql_id=s.sql_id;--The most recent 10-mi

-connected wiring good, two keyboard is not bad can wake up the system, However, a complete reload of the system does not resolve the bug.---Finally, at the end of the sleep when pressing any key can not wake the notebook, only the upper right corner power and the external mouse button to wake up.The so-called however persuasive, outsmart, you continue to keep your MacBook on track by rebooting, resetting, reloading, and reloading, but the Mac system code is also constantly improving the magic t

display inconsistent issues,The most common scenario is the following: Lsof|grep-i Delete Look at the deleted files: some deleted files, but the process is not reload, those space is still occupied, you can understand that the process is similar to Windows, the handle is not released concept bar ~ Just windows if there are files being used by the process, you are generally not deleted, and Linux Although the deletion limit is not done, but wait until the process is finished using

Oracle| Notes | performance Oracle Performance Diagnostics-Learn Statspack notes (i) Author: Liu Yingbo Time: 2004-3-2 Mail:liuyingbo@126.com, please correct me. Reprint please indicate the source and the author Description: oracle8.1.6 began to introduce Statspack,statspack is a powerful tool for diagnosing Oracle performance Prepare before installation A. First, the confirmation of system parameters: Job_query_processes: In order t

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locations, the weight of the key There are different situations in which keywords are ranked differently. So there are three factors influencing the volatility of keyword rankings: 1, the weight of a single web page level; 2. The importance of the position of keywords appearing in a single Web page; 3, a single Web page in the relevance of the keyword level. Factors affecting the ranking of Web keywords from these three points, we are based on the actual situation of the site to carry out a