Troubleshoot

 This was caused by reusing ASM disks from a previous installation of GI. Remedied this with the following commands: [root@redfern1 ~]# dd if=/dev/zero of=/dev/sda1 bs=32768 count=32768 conv=notrunc oflag=direct 32768+0 records …

ORA-1653: unable to extend table HR.TEST by 8192 in tablespace DATA_1 An error occurs during the insertion operation: ORA-1653: unable to extend table HR.TEST by 8192 in tablespace DATA_1 Error: …

Cause: An attempt was made to create a common user or role with a name that was not valid for common users or roles. Error: While creating a user in the …

 For error: ORA-01000: maximum open cursors exceeded ORA-00604: error occurred at recursive SQL level 1 Check the session which causes the issue: select a.value, s.username, s.sid, s.serial# from v$sesstat a, …

 Error: ORA-00018 maximum number of sessions exceeded SQL> drop table test; drop table test * ERROR at line 1: ORA-00018: maximum number of sessions exceeded Cause: Maximum number of session …

 Error ORA-04031: unable to allocate nnn bytes of shared memory Solution Need to add more memory to the Shared pool area. Check the size of memory allocate to shared_pool_size, shared_pool_reserved_size …

 Error: Following error occurred during insert/DML operation on the Standby side of Active Dataguard in Oracle. On Standby Database: [oracle@orcl19c ~]$ sqlplus / as sysdba SQL*Plus: Release 19.0.0.0.0 – Production …

  ERROR: Redo transport problem detected: redo transport to database orcl has the following error: ORA-03111: break received on communication channel Redo transport problem detected: redo transport to database orcl …

 Getting following warning in one of the standby server in Dataguard environment: Error: ORA-16853: apply lag has exceeded specified threshold On Oracle ORA ERROR C:\Oracle>oerr ora 16853 16853,0000, “apply lag …

 Parameter used to get this warning error is TransportDisconnectedThreshold Parameter. It value defined in seconds. Default value : 30 seconds, We can also set the parameter to zero value to …