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  • Troubleshoot

    Error: ORA-16765: Redo Apply is running

    by tuanlp December 3, 2024
    by tuanlp December 3, 2024

    DGMGRL> show configuration;Configuration – DG_TST1T  Protection Mode: MaxAvailability  Databases:    TST1TS – Primary database    TST1TP – Physical standby database      Error: ORA-16765: Redo Apply is runningFast-Start Failover: DISABLEDConfiguration Status:ERRORCAUSE:Broker configuration out of …

  • Backup&RecoveryTroubleshoot

    Khắc phục lỗi recovery khi OPEN RESETLOGS lỗi SYSTEM trong Oracle Database?

    by tuanlp November 6, 2024
    by tuanlp November 6, 2024

    Error log: SQL> alter database open resetlogs; alter database open resetlogs * ERROR at line 1: ORA-01194: file 1 needs more recovery to be consistent ORA-01110: data file 1: ‘/u01/app/oracle/oradata/ORCL/system01.dbf’ …

  • Troubleshoot

    check the FRA usage and troubleshoot the issue in oracle DB

    by tuanlp September 4, 2024
    by tuanlp September 4, 2024

    How to check the FRA usage and troubleshoot the issue in oracle DB? step1)Check the FRA usage. SELECTROUND((A.SPACE_LIMIT / 1024 / 1024 / 1024), 2) AS FLASH_IN_GB,ROUND((A.SPACE_USED / 1024 / …

  • Troubleshoot

    ORA-16086: Redo data cannot be written to the standby redo log

    by tuanlp September 4, 2024
    by tuanlp September 4, 2024

    Problem DescriptionOracle physical standby database is not able to synchronize with the primary database. From the standby database alert log we see the following logs. Thu Sep 23 14:57:47 2010RFS[2237]: …

  • Troubleshoot

    How to Drop Data Guard Configuration in oracle 

    by tuanlp September 3, 2024
    by tuanlp September 3, 2024

    Once while configuring the dataguard broker, i faced the ORA-16625 and ORA-16501 . This error occurs beacuse the broker rejects an operation requested by the client when the database required to execute that operation …

  • Troubleshoot

    RMAN-05537: DUPLICATE without TARGET connection when auxiliary instance is started with spfile cannot use SPFILE clause

    by tuanlp September 2, 2024
    by tuanlp September 2, 2024

    How to resolve the error   RMAN-05537: DUPLICATE without TARGET connection when auxiliary instance is started with spfile cannot use SPFILE clause ? Error:Starting Duplicate Db at 9-SEP-14RMAN-00571: ===========================================================RMAN-00569: =============== …

  • Troubleshoot

    RMAN-04014: startup failed: ORA-09925: Unable to create audit trail file during creation of physical standby using RMAN

    by tuanlp September 2, 2024
    by tuanlp September 2, 2024

    RMAN> connect target sys target database Password: connected to target database: TESTDB1 (DBID=693279980) RMAN> connect auxiliary sys@testdb2 auxiliary database Password: connected to auxiliary database: TESTDB2 (not mounted) RMAN> run{ allocate …

  • Linux

    How to change SSH Default Port in CentOS 8

    by tuanlp August 29, 2024
    by tuanlp August 29, 2024

    Check Status of SSH Service Verify current status of SSH service by using systemctl command. # systemctl status sshd.service â sshd.service – OpenSSH server daemon Loaded: loaded (/usr/lib/systemd/system/sshd.service; enabled; vendor preset: enabled) …

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Freelance Sys Admins

My name is Tuanlp, freelance Sys Admins in HaNoi, VietNam. Welcome to my internet journal where I started my learning journey.

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