How to Fix ORA-12560: TNS Protocol Adapter Error in Oracle
If you’ve just installed Oracle Database and tried connecting using SQL*Plus, you might have seen this frustrating error: Don’t worry — this…
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ORA-00030: User Session ID Does Not Exist
The Oracle error ORA-00030: user session ID does not exist occurs when you try to perform an action on a session that…
ORA-14451: Unsupported Feature with Temporary Table
The Oracle error ORA-14451: unsupported feature with temporary table occurs when you try to use an operation that is not supported on…
Should You Use “@” in Oracle Passwords? Risks, Errors & Fixes
When setting strong passwords in Oracle, it’s tempting to use special characters like @. But in Oracle’s world, @ isn’t just another…
How to Fix ORA-19687: SPFILE Not Found in Backup Set
If you’re working with Oracle RMAN and trying to restore the SPFILE, running into the ORA-19687 error can be frustrating. This error…
How to Disable AutoTask in Oracle
Sometimes you may want to stop Oracle’s AutoTask jobs temporarily — for example, to troubleshoot performance issues or avoid conflicts with important…
How to Fix ORA-00054: Resource Busy and Acquire with NOWAIT Specified or Timeout Expired
While working with Oracle databases, you might encounter: If you’re wondering: This post will clarify these questions simply so you can handle…
ORA-00020: Maximum Number of Processes Exceeded — What It Means and How to Fix It
Oracle error ORA-00020: maximum number of processes (string) exceeded indicates that your database has hit its process limit, as defined by the…
How to Fix ORA-00059: Maximum Number of DB_FILES Exceeded in Oracle
If you’re working with Oracle databases and hit this error: Don’t worry — this just means your database has reached its configured…
How to Fix ORA-00959: Tablespace ‘TEST_TBS’ Does Not Exist
If you’re working with Oracle and see this error: It means you’re trying to use a tablespace that hasn’t been created in…