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Oracle Clusterware log files

Locate Oracle Cluster log files

In Oracle® Grid Infrastructure Installation Guide 11g Release 2 (11.2) for Linux, the section, About the Oracle Clusterware Alert Log, says that:

The Oracle Clusterware alert log is the first place to look for serious errors. In the event of an error, it can contain path information to diagnostic logs that can provide specific information about the cause of errors.

The location of the Oracle Clusterware log file is CRS_home/log/hostname/alerthostname.log, where CRS_home is the directory in which Oracle Clusterware was installed and hostname is the host name of the local node.

In Oracle® Clusterware Administration and Deployment Guide 11g Release 2 (11.2), the section, Clusterware Log Files and the Unified Log Directory Structure, says that:

Table H-1 Locations of Oracle Clusterware Component Log Files
Component Log File LocationFoot 1
Cluster Ready Services Daemon (CRSD) Log Files Grid_home/log/host_name/crsd
Cluster Synchronization Services (CSS) Grid_home/log/host_name/cssd
Cluster Time Synchronization Service (CTSS) Grid_home/log/host_name/ctssd
Grid Plug and Play Grid_home/log/host_name/gpnpd
Multicast Domain Name Service Daemon (MDNSD) Grid_home/log/host_name/mdnsd
Oracle Cluster Registry Oracle Cluster Registry tools (OCRDUMP, OCRCHECK, OCRCONFIG) record log information in the following location:Foot 2

Grid_home/log/host_name/client

Cluster Ready Services records Oracle Cluster Registry log information in the following location:

Grid_home/log/host_name/crsd

Oracle Grid Naming Service (GNS) Grid_home/log/host_name/gnsd
Oracle High Availability Services Daemon (OHASD) Grid_home/log/host_name/ohasd
Event Manager (EVM) information generated by evmd Grid_home/log/host_name/evmd
Oracle RAC RACG The Oracle RAC high availability trace files are located in the following two locations:

Grid_home/log/host_name/racg

$ORACLE_HOME/log/host_name/racg

Core files are in subdirectories of the log directory. Each RACG executable has a subdirectory assigned exclusively for that executable. The name of the RACG executable subdirectory is the same as the name of the executable.

Additionally, you can find logging information for the VIP and database in these two locations, respectively.

Server Manager (SRVM) Grid_home/log/host_name/srvm
Disk Monitor Daemon (diskmon) Grid_home/log/host_name/diskmon
Grid Interprocess Communication Daemon (GIPCD) Grid_home/log/host_name/gipcd
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