Troubleshoot

 Error: On checking the alert log we found the following error in alert log: ORA-00257: archiver error. Connect internal only, until freed.ORORA-19809: limit exceeded for recovery filesORA-19804: cannot reclaim 904507904 …

 Issue When i tried to connect with the database then i got the following error.ORA-27101: shared memory realm does not exist ErrorSQL*Plus: Release 12.1.2 – Production on Mon May 07 …

 Error: ORA-27041: unable to open file Cause:Unable to start the database after adding new disk in diskgroup. Solution: 1. Check the permission of the disks.Note: Need permission at OS level …

  ORA-28000: the account is locked 1. Check the Status of User account in Oraclecol username for a22col account_status for a17col profile for a10Select username, account_status,profile from dba_users where username …

  ORA-04030: out of process memory when trying to allocate 4152 bytes (8475.kgghte,8475.kgghte) ErrorIn our case, we are getting the error in alert log during normal production timing:Mon Jan 07 …

  ORA-31641: unable to create dump file Expdp error During the EXPDP backup we are getting the following error on executing the command ErrorC:Usersoracle>expdp full=y directory=dbdumpExport: Release 18.0.0.0.0 – Production …

  RMAN-03002: failure of register command ErrorI am going to register the 12c database in 11g RMAN catalog database and getting the following error: rman target / catalog rcv_user/rcv_passwword@RCVCATRecovery Manager: …

  RMAN-06429: TARGET database is not compatible with this version of RMAN ErrorWhile connecting with RMAN Command window getting the following errors: RMAN-06438: error executing package DBMS_RCVMAN in TARGET databaseRMAN-00571: …