Oracle11被手动关闭路径未定（oracle11手动关机）

Oracle 11g Database Shutdown Manually: Path Not Found

On a typical day, IT administrators may encounter situations where their Oracle 11g database unexpectedly shuts down. Although troubleshooting this error can be difficult, it is vital to take quick action to ensure data integrity and continuity. One of the most common causes of this error is a missing file in the database path.

In this article, we will explore the steps you can take to troubleshoot and fix the Oracle 11g Database Shutdown Manually: Path Not Found error.

Step 1: Check the Alert Log and Trace Files

The first step in troubleshooting this error is to check the alert log and trace files. These files can provide information about the cause of the error, including which file is missing. You can use the following commands to access the alert log and trace files:

cd $ORACLE_HOME/admin//bdump

tl -f alert_.log

After accessing the alert log and trace files, review the contents for any error messages that can assist you in identifying the missing file. Once you identify the missing file, you can check whether the file exists in the database path.

Step 2: Check the Database Path

The missing file could be a control file, datafile, or log file. It may have been deleted, moved, or renamed without updating the database. To check whether the file exists in the database path, use the following command:

ls /

If the file exists, it might be corrupted, and you can attempt to restore it from the backup.

On the other hand, if the file is missing, you need to recreate it using the CREATE CONTROLFILE, CREATE DATAFILE, or CREATE LOGFILE commands. However, you need to ensure that you use the correct parameters for each file type.

Step 3: Re-create the Missing File

The following are sample SQL commands to recreate a missing datafile:

ALTER DATABASE DATAFILE ” OFFLINE DROP;

ALTER DATABASE CREATE DATAFILE ‘/’ AS ‘/’;

ALTER DATABASE DATAFILE ‘/’ ONLINE;

To recreate a missing controlfile, use the following SQL commands:

STARTUP NOMOUNT;

CREATE CONTROLFILE REUSE DATABASE ” NORESETLOGS NOARCHIVELOG

MAXLOGFILES

MAXLOGMEMBERS

MAXDATAFILES

MAXINSTANCES

MAXLOGHISTORY

LOGFILE ”, ”, …;

ALTER DATABASE OPEN;

To recreate a missing log file, use the following SQL commands:

ALTER DATABASE ADD LOGFILE GROUP (”) SIZE ;

ALTER DATABASE ADD LOGFILE GROUP (”) SIZE ;

Once you recreate the missing file, you can attempt to start the database and confirm that it is functioning correctly.

Conclusion

When your Oracle 11g database shuts down unexpectedly, it can be a challenging problem to troubleshoot. However, by following the steps outlined in this article, you can identify and fix the missing file that caused the database shutdown. With this knowledge, you can make sure that your Oracle 11g database remns up and running, providing reliable data storage and accessibility for your business.