sid

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: Why am I getting this database error when I update a table? ERROR at line 1: ORA-00054: resource busy and acquire with NOWAIT specified or timeout expired 回答1: Your table is already locked by some query. Like you have executed "select for update" and has yet not committed/rollback and again fired select query. Do a commit/rollback before executing your query. 回答2: from here ORA-00054: resource busy and acquire with NOWAIT specified You can also look up the sql,username,machine,port information and get to the actual process which holds the

本文链接： https://blog.csdn.net/guogang83/article/details/78800487 [oracle@database ~]$nohup expdp gg/gg directory=gg_DB dumpfile=gg_20171212_%u.dmp logfile=gg_zc_20171212.log parallel=4 job_name=exp_gg_20171212 filesize=20g cluster=no compression=DATA_ONLY & ................................................... Estimate in progress using BLOCKS method... Processing object type SCHEMA_EXPORT/TABLE/TABLE_DATA 导出一直卡在这里。 1.刚开始以为是ESTIMATE的问题，ESTIMATE默认是BLOCKS 。 ESTIMATE 计算作业估计值。 有效的关键字值为: [BLOCKS] 和 STATISTICS。 于是把调整了一下，ESTIMATE=STATISTICS，结果还是卡住。 2.回归这个问题，那就要找到它到底在做什么，怎么看呢？ select s.EVENT,s.MODULE,s

1.查询锁表的信息 select sess.sid,sess.serial#, lo.oracle_username,lo.os_user_name, ao.object_name,lo.locked_mode from v$locked_object lo,dba_objects ao,v$session sess where ao.object_id=lo.object_id and lo.session_id=sess.sid; 杀掉进程 SQL > alter system kill session '68,51';--分别为SID和SERIAL#号 如果杀不掉则 执行一下的sql select spid, osuser, s.program from v$session s,v$process p where s.paddr=p.addr and s.sid=1065 此处的sid=1062 是 上面查询的锁表的sid 然后 kill -9 1520 (为查出来的spid号) 注意事项，如果job定时还在跑要先关掉，不然杀死又起来了 来源： https://www.cnblogs.com/JIKes/p/11777790.html

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: What should I choose NASM or MASM for learning assembly. I want to learn assembly, motivation being Reverse Engineering. So that when I disassemble some executable, I can understand the code by looking at disassembled code. Update: I think I dint make my self clear.. I understand those are assemblers, but to understand the output of a disassembler I need to know assembly and that's the reason I'm asking where to start(with MASM or NASM) 回答1: Assuming you want to learn how to do reverse-engineering on Windows , here's how. The Linux Way is

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I'm stuck on why a node.js app that was moved to an IIS7 server is now failing. I know IIS7 doesn't support web sockets but my understanding was that socket.io would fall back to long polling if web socket isn't available. So now when the user tries to press a specific button which would normally have required the socket or long polling I get something like this: XHR finished loading: POST "https://localhost:817/socket.io/?EIO=2&transport=polling&t=1433777964357-6&sid=QWsESi0c9ih7WMWKAAAC". GET https://localhost:817/socket.io/?EIO=2

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I'm looking for a way to find out if there are uncommited INSERT, UPDATE or DELETE statements in the current session. One way would be to check v$lock with the current sid, but that requires read access to v$lock, which is be a problem if the DBA doesn't want to grant it. Any other ways (other than keeping track of all database commands issued by the application)? 回答1: you can check if your session has a row in V$TRANSACTION (obviously that requires read privilege on this view): SQL> SELECT COUNT(*) 2 FROM v$transaction t, v$session s, v

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: There's a question about converting from a SID to an account name ; there isn't one for the other way around. How do you convert a username to a SID string, for example, to find out which HKEY_USERS subkey relates to a user of a given name? 回答1: The podcast tells me I should ask, and answer, questions when they're not answered on SO already. Here goes. The easy way, with .NET 2.0 and up, is this: NTAccount f = new NTAccount("username"); SecurityIdentifier s = (SecurityIdentifier) f.Translate(typeof(SecurityIdentifier)); String sidString = s

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: In my rails application I currently have a load of users who each have a registered user id. If I go in to my users index and click on a users show page I get the following example header. localhost:3000/users/3 Now I don't like this as it easily allows people to skip through users in the header. How would I go about doing the following so that it shows the user.username field instead e.g. localhost:3000/users/adamwest 回答1: You can define a to_param method on the User model. class User ... def to_param name end ... end Then every generated

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I get the following exception in my system.This system worked properly. But suddenly got and exception. I tried doing debugging. But I couldn't find the anything. This is about a profile picture upload. I did some removing of code and I got the error. But then I again add those codes but nothing happen. I tried some solutions in the internet but didn't work. I'm new to this work so please help me if you can. I tried removing some of the codes then I got an error saying invalid operation. How can I fix this? I tried to debug and find where

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 由 翻译 强力驱动 问题: I have a spreadsheet I'm trying to read with POI (I have both xls and xlsx formats), but in this case, the problem is with the xls file. My spreadsheet has about 10,000 rows and 75 columns, and reading it in can take several minutes (though Excel opens in a few seconds). I'm using the event based reading, rather than reading the whole file into memory. The meat of my code is below. It's a bit messy right now, but it's really just a long switch statement that was mostly copied from the POI examples. Is it typical for POI performance