Tag Archives: Oracle 19c error codes

Hi, If you get ORA-01555: snapshot too old error when you execute any query, then you have a problem with undo management or undo tablespaces.

Hi, When you take many complaints from customer about slowness of database, you should check Oracle database wait events.  

Hi, When you take many complaints from customer about slowness of database, you should check Oracle database wait events.

Hi, You can format and mount any disk which is attached a new disk to the server.

Hi, Sometimes application developers or client offers you to kill any session or sessions group like SQL Net Client, or JDBC Client sessions or RMAN sessions.

Hi, Sometimes application developers or client offers you to kill any session or sessions group like SQL Net Client, or JDBC Client sessions or RMAN sessions.

Hi, While you are using your program which is connected to Oracle database, you can feel slowness on application related with Oracle database. This problem is probably related with blocking session …

Hi, While you are using your program which is connected to Oracle database, you can feel slowness on application related with Oracle database. This problem is probably related with blocking session …

Hi, When you try to restore database, you can get ORA-19504 ORA-17502 ORA-15041 diskgroup space exhausted error.