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Recent Posts:
- How to start up the ASM instance when the spfile is misconstrued or lost
- How to save sar reports longer than 7 days in Solaris
- Most Common Two-node Pacemaker cluster issues and their workarounds
- Managing Resource Startup Order in Pacemaker Cluster (Managing Constraints)
- Troubleshooting Pacemaker Cluster Networking
- How to find and delete files older than some particular time period in Linux
- “-bash: firewall: command not found” – How to resolve in CentOS/RHEL 7
- How to set JBOSS_HOME in UNIX and Windows
- Troubleshooting Resource Failures in Pacemaker Cluster
- How to Configure Pacemaker Cluster Notifications
- How to Configure Cluster Logging for Corosync and Pacemaker
- Managing resources in a pacemaker cluster (stop/start and relocate resource groups in a running cluster)
- How to configure a systemd service to wait for a specific mount point to be mounted before starting
- Which SPFILE Parameter File is Impacted when Issuing an ALTER SYSTEM Command
- How to Create and Configure Resource Groups in a Pacemaker Cluster
- How to Create and Configure Resources in a Pacemaker Cluster
- Configuring Cluster Fencing Agents in a Pacemaker Cluster
- Setting Up Fencing Devices in a Pacemaker Cluster
- What is fencing and What are different methods of fencing in a pacemaker cluster
- Managing Quorum Calculations in a Pacemaker Cluster
- What is quorum in a pacemaker cluster (Understanding Quorum Operations)
- Prohibiting a cluster node from hosting resources in pacemaker cluster (putting a node into standby mode)
- Managing Cluster Membership in pacemaker cluster (Adding and removing a cluster node)
- How to Configure CentOS/RHEL 5,6 to use /etc/passwd to Store Passwords Instead of /etc/shadow
- How to modify the resource property in Pacemaker cluster
- Beginner Guide to RHEL 7 high-availability cluster – Architectural Overview
- “The audit system is in immutable mode, no rules loaded” – while starting auditd service
- How to send select audit events to specific files or hosts using rsyslog & auditd
- How to Modify spfile in Oracle Database
- Beginners Guide to Monitoring Oracle Database Restore/Recovery Progress
- How /etc/shadow file is locked or unlocked during password change using passwd command
- Behaviour of /etc/audit/rules.d – CentOS/RHEL 5 V/s CentOS/RHEL 6
- Auditd Messages Are Filling Up /var/log/messages
- How to Ignore/Disable Specific auditd Logging Entries
- How to find Which Process Is Killing mysqld With SIGKILL or SIGTERM on Linux
- How to use auditd to monitor a specific command execution in CentOS/RHEL 7
- 12c ASM: PRCR-1001 : Resource ora.proxy_advm Does Not Exist (Flex ASM with Cardinality = ALL)
- How to Convert STANDARD ASM to FLEX ASM in 12C
- How to re-install GRUB to a multipath device in CentOS/RHEL 6
- How to set up cron for automatic data collection from the system activity reporter (SAR) in Solaris 10 and 11
- How to set sysctl variables on CentOS/RHEL
- [SOLVED] sysctl settings are not not persistent after reboot in CentOS/RHEL 6,7
- How to build a Systemtap kernel module in CentOS/RHEL 6,7,8
- How sysctl parameters are executed in CentOS/RHEL 7
- How to enable coredumps for daemon process (services) in CentOS/RHEL
- How to check if files and directories have the correct SELinux security context
- How to copy SELinux context of one directory to another
- How to Configure SELinux for home directories for Apache HTTPD
- How to change sa/sar log destination from /var/log/sa to another directory in CentOS/RHEL
- How to stop the sysstat service in CentOS/RHEL 5,6
- How To Increase The Retention Of “sar” Data To ‘N’ Days in Linux
- How to Compress and Extract Files and Directories in Linux Using gzip and bzip2
- How to Restore ASM Based OCR After Complete Loss of the CRS Diskgroup on Linux/UNIX
- How to prevent gnome-terminal from closing when there are multiple tabs open
- How to Find OCR Master Node
- What is the difference between the -i and -U options used in rpm command in Linux
- How to enable IPV6 in Apache
- How to create IPA master server and replica server
- How to manually edit or add/remove entries to/from the rpm database in Linux
- How to backup the RPM database in CentOS/RHEL
- How to remove multiple rpm packages with the same name in CentOS/RHEL 5
- How to install rpm package in a custom path
- How to read/inspect a backed up rpm or yum database from another system
- “yum update” fails with “[package version 1] is a duplicate with [package version 2]”
- Troubleshooting recurring rpm database corruption in Linux
- How to extract source code from source rpm
- How to remove duplicate packages from a failed yum transaction (when yum-complete-transaction fails to complete)
- How to Configure 802.1q VLAN on top of a bond in CentOS/RHEL 7 when using NetworkManager
- How to unlock a locked IPA Admin User in Linux
- How to configure LDAP Client on CentOS/RHEL 6 using SSSD
- How to Integrate CentOS/RHEL system into an AD Domain with LDAP/Kerberos/SSSD
- How to provide privileges to ipa-user to enroll a host in ipa-server
- How to automatically enrol IPA client to IPA Master
- How to unlock/reset admin account on IPA
- How to convert Unix/Epoch time into a human readable time format
- How To Create A Domain In JBoss EAP 7
- How to check the JBoss EAP version
- How to set different version of JDK in JBoss EAP 6 domain mode
- How to update Java Home in JBoss EAP
- How to audit all Commands run on OEL 5,6 using auditd
- How to change the default permissions on /var/log/audit/audit.log file in CentOS/RHEL
- A File Is Claimed to Be Disappearing – How to monitor a file for deletion in Linux
- How to Stop Audit Log Entries Written to System Logs in CentOS/RHEL 6
- GUDS – A Script for Gathering Solaris Performance Data
- How to Monitor Service Start/Stop Operations using auditd
- How to monitor filesystem changes with auditd in CentOS/RHEL
- How to change the default system language in CentOS/RHEL 5,6
- How to change the minimum password length in CentOS/RHEL 7
- How to Change the Priority of a Process (nice value) in Linux
- TSPITR fails With RMAN-06553
- How to Recover A Dropped Tablespace Using TSPITR
- Oracle Tablespace Transport for a Single Partition
- How To Convert A Partitioned Table To A Non-Partitioned Table Using DataPump In Oracle 11g and 12c
- Step By Step Guide To Create Physical Standby On Normal File System For ASM Primary using RMAN
- How to Create a Physical Standby from ASM Primary
- How To Catalog Backups / Archivelogs / Datafile Copies / Controlfile Copies in Oracle Database
- RMAN: SET NEWNAME Command Using SQL
- Nohup Command Examples – Runs a Command that Keeps Running after You Log Out
- How to capture a vmcore from a KVM or RHEV guest
- How to disable firewalld and nftables and use iptables instead in CentOS/RHEL 8