how to view log files in unix

As an Oracle DBA, we sometimes need to track the accidental deletion of data or malicious user operations. In this case, we not only need to find the database account that executes these operations, you also need to know which client (IP address, etc.) sends the operation. To address these problems, the most effective, practical, and cost-effective method is to analyze the log files of the Oracle database.

log_reuse_wait_desc columns of the sys.database catalog view. log_reuse_wait Value Log_reuse_wait_desc Value Description 0 Nothing There is currently one or more reusable virtual log files. 1 CHECKPOINT No checkpoint has occurred since the last log truncation,

Git log view commit record, parameters:-N (n is a positive integer) to view the last N commit information$ git log-2 See the last 2 commit history--filename filename for any file name to view the submission information for the specified file. (Note: The file name should be p

file records the FTP session and can show what files the user has copied to the FTP server or from the server. The file shows the malicious program that the user has copied to the server to invade the server, and what files the user has copied for him to use.The format of the file is: The first field is the date and time, the second domain is the number of seconds to download the file, the remote system na

log files are files used to record various running messages in a Linux system, and different log files record different types of information, which can be helpful in diagnosing and resolving problems in the system. Parsing log fil

[file_name] option to start it. If there is no value for the given file_name, the default name is Host_name.log. 3. Slow query logWhen started with the--log-slow-queries[=file_name] option, Mysqld writes a log file containing all SQL statements that have been executed for more than long_query_time seconds. If the file_name value is not given, the default hostname is not The suffix is-slow.log. If a filenam

During routine DB2 maintenance, transaction log full is a common problem, and the usage of log space is also a matter of great importance. How can we view the log space usage?In fact, we mentioned archive settings yesterday. We know that DB2 has several parameters at the DATABASE level. The following determines the spa

) select "Viewddl Commands" menu, "tr Uncate table action Item, click Salvage, generate statement, Query Analyzer, execute------------------------------------------------------------------------Several issues that log Explorer uses-------------------- --------------------------------------------------1) Make a full/differential/log backup of the database if you choose to delete the inactive entries in the t

system log files ( can be viewed by cat or Tail command ) /var/log/message information and error logs after system startup is one of the most common logs in red Hat Linux /var/log/secure Security-related log information /var/log