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How to shutdown a Single Instance Database in Oracle 19c Overview Shutdown is an operation performed when a command is issued by the Administrator to bring down the Database or when it receives a signal to bring down the Database incase of a failure/malfunction or due to SHUTDOWN ABORT comm and execution. The options used by t he Administrator to bring down the Database is called as Shutdown Modes and the Database Server follows a sequence to shutdown a Database . Let's check how does that happen. Concepts The following are the shutdown Modes. Shutdown Modes A database administrator with SYSDBA or SYSOPER privileges can shut down the database using the SQL*Plus SHUTDOWN command or Enterprise Manager. The SHUTDOWN command has the following options that determine the shutdown behavior. Now let's look into each SHUTDOWN option in detail. SHUTDOWN ABORT  This mode is used for emergency situations, such as when shutdown with "IMMEDIATE" option doesn't work. This mode o...
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 PROMPT [STEP 11] I/O Latency during periods this SQL appeared COLUMN filetype_id   FORMAT 999 HEADING 'TYPE_ID' COLUMN ms_per_read   FORMAT 999.999 COLUMN ms_per_write  FORMAT 999.999 WITH r AS (   SELECT MIN(snap_id) b, MAX(snap_id) e   FROM   dba_hist_sqlstat   WHERE  sql_id='&sql_id' ) SELECT f.filetype_id,        ROUND(f.readtim  / DECODE(NULLIF(f.phyrds ,0),0,1,f.phyrds ),3) AS ms_per_read,        ROUND(f.writetim / DECODE(NULLIF(f.phywrts,0),0,1,f.phywrts),3) AS ms_per_write FROM   dba_hist_filestatxs f, r WHERE  f.snap_id BETWEEN r.b AND r.e GROUP  BY f.filetype_id, f.readtim, f.phyrds, f.writetim, f.phywrts ORDER  BY ms_per_read DESC NULLS LAST;
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 PROMPT [STEP 11B] CDB I/O latency by file type for this PDB (AWR, CON_ID filter) -- Get this PDB's CON_ID (adjust name if needed) COLUMN con_id FORMAT 999 SELECT con_id FROM v$containers WHERE name = SYS_CONTEXT('USERENV','CON_NAME'); COLUMN filetype_name FORMAT A20 COLUMN ms_per_read   FORMAT 999.999 COLUMN ms_per_write  FORMAT 999.999 WITH r AS (   SELECT MIN(snap_id) b, MAX(snap_id) e   FROM   cdb_hist_sqlstat   WHERE  con_id = SYS_CONTEXT('USERENV','CON_ID')   AND    sql_id = '&sql_id' ) SELECT f.filetype_name,        ROUND( (SUM(f.small_read_servicetime + f.large_read_servicetime))               / NULLIF(SUM(f.small_read_reqs + f.large_read_reqs),0), 3) AS ms_per_read,        ROUND( (SUM(f.small_write_servicetime + f.large_write_servicetime))               / NULLIF(SUM(f.small_write_reqs + f.large_write_reqs),0), 3...
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