read sql log file

File (), like file_get_contents (), reads the contents of a file. File_get_contents () outputs the entire file (cannot read the first line indent and line break in txt). The file () function reads entire files into an array. Like File_get_contents (), the difference is that

LOG_ERROR.LOG.L when the 3) file is added to the end of the file, and then a log_ is recreated. Error.log 4) the number of reserved files is 9, if the above log_error.log and more than 10k, will again rename Log_error.log to Log_ Error.log.1, But because Log_error.log.1 already exists, first change the existing log_error.log.1 to Log_ Error.log.2. And so on, when the last

From collections Import Dequedef search (lines, pattern, history=5): Previous_lines = deque (maxlen=history) For line in lines: If pattern in line: Yield Line,previous_lines Previous_lines.append (line)if __name__ = = ' __main__ ': With open (' Log.txt ', ' R ', encoding= ' utf-8 ') as F: For line, prevlines in search (f, ' return ', 1): For Pline in Prevlines: Print (pline,end= ") Print (line,end= ") Print

full mode when the purge is complete.Use[Master]GOAlterDATABASEDnnameSETRECOVERY SimpleWithno_waitGOAlterDATABASEDnnameSETRECOVERY Simple--Simple ModeGOUseDnnameGODbccShrinkfile (N' Dnname_log ', One, Truncateonly)GOUse[Master]GOAlterDATABASEDnnameSETRECOVERYFullWithno_waitGOAlterDATABASEDnnameSETRECOVERYFull--Revert to full modeGOAdvantages: This cleanup log runs short of time, 90GB of log can be cleared

Alterdatabase dnname SET RECOVERY Full--revert to fully mode GOAdvantages: This cleanup log runs short of time, 90GB of log can be cleared in minutes or so, after doing a full backup in minutescan be completed.Cons: But this action is best not to be used frequently, as it will result in system fragmentation. Log and diff backups can be truncated in normal state

Transaction logs are very important but often ignored in the database structure. Since it is not as active as the schema in the database, few people are concerned about transaction logs. Transaction logs are records of database changes. They can record any operations on the database and save the record results in an independent file. Transaction logs are fully recorded for every transaction process. Based on these records, data files can be restored t

Brief introductionThis article describes what information is logged in the transaction log of SQL Server and how to read the information in these transaction logs. First, a Microsoft is not exposed to the function Fn_dblog, in the next part of the article mainly use this function to read the transaction

Label:Restore a full backup first, but be sure to select with Nonerecovery in the full backup (option 2nd in Enterprise Manager) The SQL statement is: Restore Database MyData from disk = ' C:\temp\movedb.bak ' WITH NORECOVERY The database then becomes the recovery mode, so you can restore the trn file by adding it in one piece. Statement is: Restore log Mydata fr

One method: Clear logs.1. Open the query analyzer and enter the commandDump transaction database name with no_log2. open the Enterprise Manager and right-click the database you want to compress -- all tasks -- shrink database -- shrink file -- Select log file -- select to shrink to xxm In the shrink mode, here we will provide a minimum number of M that can be red

Attach the database, you will be reminded to find the log file when attachedAccording to the above phenomenon there are two sentences can be solved: one: Use MASTER; EXEC sp_detach_db @dbname = ' TestDB '; EXEC sp_attach_single_file_db @dbname = ' TestDB ', @physname = ' D:\Program Files\Microsoft SQL Server\mssql10_50.s Ql2008\mssql\data\testdb.mdf ' notation tw

Today made a very annoying thing, accidentally put a 40 more g of the database log files deleted, and before the deletion I made a log in, dead or alive can not attach to the server has been prompted multiple logs cannot be automatically created, wasted a night of my time, and then constantly Google, Finally in a foreigner's blog found a few statements, directly, thank him on the way to record.Use [master]g

DELETE from [dbo].[Test] WHERE /** * Warning:where CLAUSE for this STATEMENT is GENERATED for A TABLE with no PRIMARY KEY and no CLUSTERED INDEX ***/[ID] = 1 and [name] =N'AAAA'COLLATE chinese_prc_ci_asIF @ @ROWCOUNT 1 COMMIT TRANSACTION ELSE BEGIN ROLLBACK TRANSACTION;PRINT 'error:statement affected more THAN one ROW. All the changes were rolled back.' END -- redo INSERT (0000001e:00000047:0013) Done At 2018-07-29 09:49:55.570 by HSR-PC\HSR in transaction 0000:00000301 (Committed) INSERT

Label:1 , phenomenon, problem description Customer reflects that a client can not login, the client program log display "Connection database timeout"; Check the corresponding database server, the log shows "autogrow of file" a database log file ' in the database ' a DB ' is

Tags: conda mysql yelp SQLitePreface: Recently helped the senior to deal with the JSON file, you need to read into the database, in case of subsequent reading from the database data. The data is on the YELP website: https://github.com/Yelp/dataset-examples,http://www.yelp.com/dataset_challenge/. involves some JSON and SQL issues, which are documented below. One,

truncate log file. In any case, this should be a bug of SQL Server. Then find the following code to narrow down the log file to the desired size. Copy the code to the query analyzer and modify the three parameters (Database Name, log