{"id":5506,"date":"2026-02-20T21:09:55","date_gmt":"2026-02-20T15:39:55","guid":{"rendered":"https:\/\/w3buddy.com\/?p=5506"},"modified":"2026-02-20T21:09:57","modified_gmt":"2026-02-20T15:39:57","slug":"oracle-recycle-bin-the-complete-dba-guide","status":"publish","type":"post","link":"https:\/\/w3buddy.com\/blog\/oracle-recycle-bin-the-complete-dba-guide\/","title":{"rendered":"Oracle Recycle Bin: The Complete DBA Guide"},"content":{"rendered":"\n

Everything you need to know \u2014 from concepts to day-to-day commands<\/em><\/p>\n\n\n\n

\n\n\n\n

What Is the Oracle Recycle Bin?<\/h2>\n\n\n\n

Introduced in Oracle 10g<\/strong>, the Recycle Bin (also called Flashback Drop<\/strong>) is a logical container within each tablespace where Oracle stores dropped objects instead of immediately deallocating their storage. Think of it like the Windows Recycle Bin \u2014 objects land there first and can be recovered unless you explicitly purge them or Oracle reclaims the space automatically.<\/p>\n\n\n\n

When you drop a table without<\/strong> the PURGE<\/code> clause, Oracle renames it with a system-generated BIN$<\/code> name (e.g., BIN$u4qspB\/IRC+gQKjAZYoFaw==$0<\/code>), keeps it in the same tablespace, and moves all dependent objects (indexes, triggers, constraints, LOB segments) alongside it. The original name is preserved in metadata so recovery is straightforward.<\/p>\n\n\n\n

Key Concepts<\/h3>\n\n\n\n

Space Management:<\/strong> The Recycle Bin has no fixed size \u2014 it occupies space within the object’s original tablespace. When a tablespace runs low, Oracle auto-purges the oldest Recycle Bin objects first (FIFO).<\/p>\n\n\n\n

Scope:<\/strong> Every user has their own Recycle Bin. DBAs can see all users’ objects via DBA_RECYCLEBIN<\/code>.<\/p>\n\n\n\n

What bypasses the Recycle Bin entirely (permanent drop):<\/strong><\/p>\n\n\n\n

    \n
  • Objects in the SYSTEM<\/code> tablespace or owned by SYS<\/code><\/li>\n\n\n\n
  • Partitioned tables (prior to Oracle 11g)<\/li>\n\n\n\n
  • Materialized views<\/li>\n\n\n\n
  • Objects dropped with DROP ... PURGE<\/code><\/li>\n\n\n\n
  • Tablespaces created with RECYCLEBIN OFF<\/code><\/li>\n<\/ul>\n\n\n\n
    \n\n\n\n

    Enable \/ Disable<\/h2>\n\n\n\n
    -- Check current status\nSHOW PARAMETER recyclebin;\nSELECT name, value FROM v$parameter WHERE name = 'recyclebin';\n\n-- Enable (system-wide, persistent)\nALTER SYSTEM SET recyclebin = ON SCOPE=BOTH;\n\n-- Enable (session only)\nALTER SESSION SET recyclebin = ON;\n\n-- Disable (system-wide, persistent)\n-- Note: existing Recycle Bin contents are NOT purged on disable\nALTER SYSTEM SET recyclebin = OFF SCOPE=BOTH;\n\n-- Disable (session only)\nALTER SESSION SET recyclebin = OFF;<\/code><\/pre>\n\n\n\n
    \n\n\n\n
    Viewing Recycle Bin Contents<\/h2>\n\n\n\n
    Your own Recycle Bin<\/h3>\n\n\n\n
    -- Quick look\nSELECT * FROM RECYCLEBIN;\n\n-- Detailed, formatted view\nSELECT  object_name,      -- BIN$... system name\n        original_name,    -- Name before the drop\n        type,             -- TABLE, INDEX, TRIGGER, etc.\n        ts_name,          -- Tablespace\n        droptime,         -- When it was dropped\n        can_undrop,       -- YES = recoverable\n        can_purge,        -- YES = can be purged\n        space             -- Space in blocks\nFROM    USER_RECYCLEBIN\nORDER BY droptime DESC;<\/code><\/pre>\n\n\n\n
    All users’ Recycle Bins (DBA)<\/h3>\n\n\n\n
    SELECT  owner,\n        object_name,\n        original_name,\n        type,\n        ts_name,\n        droptime,\n        can_undrop,\n        ROUND(space * 8192 \/ 1048576, 2) AS size_mb\nFROM    DBA_RECYCLEBIN\nORDER BY owner, droptime DESC;<\/code><\/pre>\n\n\n\n
    Find a specific table<\/h3>\n\n\n\n
    -- As a regular user\nSELECT object_name, original_name, droptime, can_undrop\nFROM   USER_RECYCLEBIN\nWHERE  original_name = 'EMPLOYEES'\nAND    type = 'TABLE'\nORDER BY droptime DESC;\n\n-- As DBA (search across all owners)\nSELECT owner, object_name, original_name, droptime, can_undrop\nFROM   DBA_RECYCLEBIN\nWHERE  owner = 'HR'\nAND    original_name = 'EMPLOYEES'\nORDER BY droptime DESC;<\/code><\/pre>\n\n\n\n
    \n
    Tip:<\/strong> If the same table was dropped multiple times, multiple BIN$<\/code> entries will appear. Order by droptime DESC<\/code> \u2014 the most recent drop is listed first. Use the specific BIN$<\/code> name to target the exact version you want.<\/p>\n<\/blockquote>\n\n\n\n
    Space usage reports<\/h3>\n\n\n\n
    -- Space consumed per tablespace\nSELECT  ts_name,\n        COUNT(*)                                    AS object_count,\n        ROUND(SUM(space) * 8192 \/ 1048576, 2)      AS size_mb\nFROM    DBA_RECYCLEBIN\nGROUP BY ts_name\nORDER BY size_mb DESC;\n\n-- Space consumed per user\nSELECT  owner,\n        COUNT(*)                                    AS objects,\n        ROUND(SUM(space) * 8192 \/ 1048576, 2)      AS size_mb\nFROM    DBA_RECYCLEBIN\nGROUP BY owner\nORDER BY size_mb DESC;<\/code><\/pre>\n\n\n\n
    \n\n\n\n
    Recovering (Undropping) Objects<\/h2>\n\n\n\n
    -- Recover by original table name (gets the most recently dropped version)\nFLASHBACK TABLE employees TO BEFORE DROP;\n\n-- Recover and rename in one step (use when original name already exists)\nFLASHBACK TABLE employees TO BEFORE DROP RENAME TO employees_recovered;\n\n-- Recover a specific version using the BIN$ name (double quotes required)\nFLASHBACK TABLE \"BIN$u4qspB\/IRC+gQKjAZYoFaw==$0\" TO BEFORE DROP;\n\n-- As DBA, recover a table in another schema\nFLASHBACK TABLE hr.employees TO BEFORE DROP;<\/code><\/pre>\n\n\n\n
    After recovery \u2014 fix index names<\/h3>\n\n\n\n
    Indexes are recovered with their BIN$<\/code> names and must be renamed manually:<\/p>\n\n\n\n
    -- Find indexes that still have BIN$ names on the recovered table\nSELECT index_name\nFROM   user_indexes\nWHERE  table_name = 'EMPLOYEES'\nAND    index_name LIKE 'BIN$%';\n\n-- Rename them back\nALTER INDEX \"BIN$u4qspB\/IRC+gQKjAZYoFaw==$0\" RENAME TO emp_pk;<\/code><\/pre>\n\n\n\n
    Check recoverability before attempting flashback<\/h3>\n\n\n\n
    SELECT original_name, can_undrop, can_purge, droptime\nFROM   USER_RECYCLEBIN\nWHERE  original_name = 'EMPLOYEES';<\/code><\/pre>\n\n\n\n
    \n
    can_undrop = NO<\/code> means a new object with the same name already exists, or the tablespace has no room. Rename or drop the conflicting object first, or use RENAME TO<\/code> during the flashback.<\/p>\n<\/blockquote>\n\n\n\n
    \n\n\n\n
    Querying a Dropped Table Without Recovering It<\/h2>\n\n\n\n
    You can SELECT<\/code> directly from a BIN$<\/code> object to inspect data before deciding whether to recover:<\/p>\n\n\n\n
    SELECT * FROM \"BIN$u4qspB\/IRC+gQKjAZYoFaw==$0\";\n\nSELECT COUNT(*) FROM \"BIN$u4qspB\/IRC+gQKjAZYoFaw==$0\";<\/code><\/pre>\n\n\n\n
    \n\n\n\n
    Purging the Recycle Bin<\/h2>\n\n\n\n
    Oracle’s PURGE TABLE<\/code> and PURGE INDEX<\/code> support both the original object name and the BIN$<\/code> system-generated name, with or without a schema prefix. All of the forms below are valid.<\/p>\n\n\n\n
    -- Purge by original table name (removes the OLDEST version if multiple exist)\nPURGE TABLE employees;\n\n-- Purge by original name, schema-qualified (DBA purging another user's object)\nPURGE TABLE hr.employees;\n\n-- Purge a specific version by BIN$ name (no schema needed \u2014 BIN$ names are globally unique)\nPURGE TABLE \"BIN$u4qspB\/IRC+gQKjAZYoFaw==$0\";\n\n-- Purge a specific version by BIN$ name with owner prefix (also valid, common in DBA scripts)\nPURGE TABLE hr.\"BIN$u4qspB\/IRC+gQKjAZYoFaw==$0\";\n\n-- Purge a specific index by original name\nPURGE INDEX emp_pk;\n\n-- Purge a specific index by original name, schema-qualified\nPURGE INDEX hr.emp_pk;\n\n-- Purge a specific index by BIN$ name\nPURGE INDEX \"BIN$u4qspB\/IRC+gQKjAZYoFaw==$0\";\n\n-- Purge your own entire Recycle Bin\nPURGE RECYCLEBIN;\n\n-- Purge all objects in a specific tablespace (DBA)\nPURGE TABLESPACE users;\n\n-- Purge one specific user's objects in a tablespace (DBA)\nPURGE TABLESPACE users USER hr;\n\n-- Purge ALL users' Recycle Bins (DBA \/ SYSDBA only \u2014 use with care)\nPURGE DBA_RECYCLEBIN;\n\n-- Drop a table permanently, bypassing the Recycle Bin entirely\nDROP TABLE employees PURGE;<\/code><\/pre>\n\n\n\n
    \n
    Note on PURGE TABLE<\/code> by original name:<\/strong> When multiple dropped versions of the same table exist, PURGE TABLE tablename<\/code> always removes the oldest<\/strong> version first. To target a specific version, use its unique BIN$<\/code> name.<\/p>\n<\/blockquote>\n\n\n\n
    \n\n\n\n
    Monitoring & Reporting Scripts<\/h2>\n\n\n\n
    Daily Recycle Bin report (DBA)<\/h3>\n\n\n\n
    SELECT  owner,\n        original_name,\n        type,\n        ts_name,\n        TO_CHAR(TO_DATE(droptime,'YYYY-MM-DD:HH24:MI:SS'),'DD-MON-YYYY HH24:MI') AS drop_time,\n        ROUND(space * 8192 \/ 1048576, 2)  AS size_mb,\n        can_undrop\nFROM    DBA_RECYCLEBIN\nWHERE   TO_DATE(droptime,'YYYY-MM-DD:HH24:MI:SS') >= SYSDATE - 1\nORDER BY drop_time DESC;<\/code><\/pre>\n\n\n\n
    Find large objects consuming Recycle Bin space<\/h3>\n\n\n\n
    SELECT  owner,\n        original_name,\n        type,\n        ts_name,\n        ROUND(space * 8192 \/ 1048576, 2) AS size_mb\nFROM    DBA_RECYCLEBIN\nWHERE   space * 8192 \/ 1048576 > 100   -- objects larger than 100 MB\nORDER BY space DESC;<\/code><\/pre>\n\n\n\n
    Tablespace pressure check \u2014 how much space can the Recycle Bin release?<\/h3>\n\n\n\n
    SELECT  rb.ts_name,\n        ROUND(SUM(rb.space) * 8192 \/ 1048576, 2)                       AS recbin_mb,\n        ROUND(fs.free_mb, 2)                                            AS current_free_mb,\n        ROUND(fs.free_mb + SUM(rb.space) * 8192 \/ 1048576, 2)         AS potential_free_mb\nFROM    DBA_RECYCLEBIN rb\nJOIN    (\n            SELECT tablespace_name, SUM(bytes) \/ 1048576 AS free_mb\n            FROM   dba_free_space\n            GROUP BY tablespace_name\n        ) fs ON rb.ts_name = fs.tablespace_name\nGROUP BY rb.ts_name, fs.free_mb\nORDER BY recbin_mb DESC;<\/code><\/pre>\n\n\n\n
    Tablespaces over 85% full that could benefit from a purge<\/h3>\n\n\n\n
    SELECT  t.tablespace_name,\n        ROUND((1 - f.free_bytes \/ t.total_bytes) * 100, 2) AS pct_used,\n        ROUND(f.free_bytes \/ 1048576, 2)                   AS free_mb\nFROM    (SELECT tablespace_name, SUM(bytes) AS total_bytes FROM dba_data_files GROUP BY tablespace_name) t\nJOIN    (SELECT tablespace_name, SUM(bytes) AS free_bytes  FROM dba_free_space  GROUP BY tablespace_name) f\n        ON t.tablespace_name = f.tablespace_name\nWHERE   (1 - f.free_bytes \/ t.total_bytes) * 100 > 85\nORDER BY pct_used DESC;\n\n-- Then selectively purge the offending tablespace\nPURGE TABLESPACE <tablespace_name>;\n\n-- Or target just one user in that tablespace\nPURGE TABLESPACE <tablespace_name> USER <username>;<\/code><\/pre>\n\n\n\n
    Generate PURGE statements for all objects in a tablespace (DBA script)<\/h3>\n\n\n\n
    Useful when you want to review before purging, or purge selectively by owner:<\/p>\n\n\n\n
    SELECT DISTINCT\n    'PURGE TABLE ' || owner || '.\"' || object_name || '\";' AS purge_stmt\nFROM DBA_RECYCLEBIN\nWHERE ts_name = 'USERS'\nAND   type    = 'TABLE'\nORDER BY 1;<\/code><\/pre>\n\n\n\n
    \n\n\n\n
    Common DBA Scenarios<\/h2>\n\n\n\n
    Scenario 1: Developer accidentally dropped a table<\/h3>\n\n\n\n
    -- Step 1: Confirm it's recoverable\nSELECT owner, original_name, droptime, can_undrop\nFROM   DBA_RECYCLEBIN\nWHERE  owner = 'HR' AND original_name = 'ORDERS';\n\n-- Step 2: Recover it\nFLASHBACK TABLE hr.orders TO BEFORE DROP;\n\n-- Step 3: Verify\nSELECT COUNT(*) FROM hr.orders;<\/code><\/pre>\n\n\n\n
    Scenario 2: Table dropped multiple times \u2014 recover the right version<\/h3>\n\n\n\n
    -- List all versions with drop times and BIN$ names\nSELECT object_name, original_name, droptime\nFROM   DBA_RECYCLEBIN\nWHERE  owner = 'SCOTT' AND original_name = 'ORDERS'\nORDER BY droptime DESC;\n\n-- Flashback the exact version using its unique BIN$ name\nFLASHBACK TABLE \"BIN$u4qspB\/IRC+gQKjAZYoFaw==$0\" TO BEFORE DROP;<\/code><\/pre>\n\n\n\n
    Scenario 3: Tablespace near full \u2014 reclaim Recycle Bin space fast<\/h3>\n\n\n\n
    -- Step 1: Check how much the Recycle Bin holds for that tablespace\nSELECT ts_name, ROUND(SUM(space) * 8192 \/ 1048576, 2) AS recbin_mb\nFROM   DBA_RECYCLEBIN\nWHERE  ts_name = 'USERS'\nGROUP BY ts_name;\n\n-- Step 2: Purge it\nPURGE TABLESPACE users;\n\n-- Step 3: Confirm space is back\nSELECT tablespace_name, SUM(bytes) \/ 1048576 AS free_mb\nFROM   dba_free_space\nWHERE  tablespace_name = 'USERS'\nGROUP BY tablespace_name;<\/code><\/pre>\n\n\n\n
    Scenario 4: Purge one user’s objects without touching others<\/h3>\n\n\n\n
    -- Only removes HR's Recycle Bin objects from the USERS tablespace\nPURGE TABLESPACE users USER hr;<\/code><\/pre>\n\n\n\n
    Scenario 5: ETL \/ maintenance script \u2014 skip the Recycle Bin<\/h3>\n\n\n\n
    -- For staging tables that are dropped and recreated routinely\nDROP TABLE stg_orders PURGE;<\/code><\/pre>\n\n\n\n
    \n\n\n\n
    Views Reference<\/h2>\n\n\n\n
    View<\/th>Who Can Use<\/th>What It Shows<\/th><\/tr><\/thead>
    RECYCLEBIN<\/code><\/td>All users<\/td>Synonym for USER_RECYCLEBIN<\/code><\/td><\/tr>
    USER_RECYCLEBIN<\/code><\/td>All users<\/td>Current user’s Recycle Bin objects<\/td><\/tr>
    DBA_RECYCLEBIN<\/code><\/td>DBAs only<\/td>Every user’s Recycle Bin objects<\/td><\/tr>
    V$PARAMETER<\/code><\/td>DBAs<\/td>Instance parameter values (incl. recyclebin<\/code>)<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
    \n\n\n\n
    Quick Command Cheat Sheet<\/h2>\n\n\n\n
    -- \u2500\u2500 STATUS \u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\nSHOW PARAMETER recyclebin;\nSELECT name, value FROM v$parameter WHERE name = 'recyclebin';\n\n-- \u2500\u2500 VIEW \u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\nSELECT * FROM RECYCLEBIN;                              -- My Recycle Bin\nSELECT * FROM DBA_RECYCLEBIN;                          -- All users (DBA)\n\n-- \u2500\u2500 RECOVER \u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\nFLASHBACK TABLE employees TO BEFORE DROP;\nFLASHBACK TABLE employees TO BEFORE DROP RENAME TO employees_recovered;\nFLASHBACK TABLE \"BIN$u4qspB\/IRC+gQKjAZYoFaw==$0\" TO BEFORE DROP;\nFLASHBACK TABLE hr.employees TO BEFORE DROP;           -- Another schema (DBA)\n\n-- \u2500\u2500 QUERY WITHOUT RECOVERING \u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\nSELECT * FROM \"BIN$u4qspB\/IRC+gQKjAZYoFaw==$0\";\n\n-- \u2500\u2500 PURGE (selective) \u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\nPURGE TABLE employees;                                 -- Oldest version by name\nPURGE TABLE hr.employees;                              -- Schema-qualified name\nPURGE TABLE \"BIN$u4qspB\/IRC+gQKjAZYoFaw==$0\";        -- Specific version by BIN$\nPURGE TABLE hr.\"BIN$u4qspB\/IRC+gQKjAZYoFaw==$0\";     -- Schema + BIN$ (DBA scripts)\nPURGE INDEX emp_pk;\nPURGE INDEX hr.emp_pk;\nPURGE INDEX \"BIN$u4qspB\/IRC+gQKjAZYoFaw==$0\";\nPURGE TABLESPACE users;                                -- Whole tablespace (DBA)\nPURGE TABLESPACE users USER hr;                        -- One user's objects (DBA)\n\n-- \u2500\u2500 PURGE (bulk) \u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\nPURGE RECYCLEBIN;                                      -- My Recycle Bin\nPURGE DBA_RECYCLEBIN;                                  -- Everyone's (SYSDBA only)\n\n-- \u2500\u2500 BYPASS RECYCLE BIN \u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\nDROP TABLE employees PURGE;\n\n-- \u2500\u2500 ENABLE \/ DISABLE \u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\nALTER SYSTEM SET recyclebin = ON  SCOPE=BOTH;\nALTER SYSTEM SET recyclebin = OFF SCOPE=BOTH;\nALTER SESSION SET recyclebin = ON;\nALTER SESSION SET recyclebin = OFF;<\/code><\/pre>\n\n\n\n
    \n\n\n\n
    Best Practices<\/h2>\n\n\n\n
      \n
    • Keep it ON in production.<\/strong> The overhead is negligible; the recovery capability is invaluable. One accidental DROP TABLE<\/code> recovered without downtime justifies it entirely.<\/li>\n\n\n\n
    • Use DROP ... PURGE<\/code> in ETL and scripts.<\/strong> Staging tables dropped and recreated regularly should bypass the Recycle Bin to avoid accumulating dead objects and consuming tablespace silently.<\/li>\n\n\n\n
    • Include Recycle Bin size in tablespace monitoring.<\/strong> A large Recycle Bin won’t trigger space alerts immediately (Oracle auto-evicts when needed), but it masks your true available capacity.<\/li>\n\n\n\n
    • Use owner.\"BIN$...\"<\/code> in DBA scripts for precision.<\/strong> When purging from another user’s Recycle Bin, qualifying with the owner name alongside the BIN$<\/code> system name is the cleanest, most explicit approach and avoids any ambiguity.<\/li>\n\n\n\n
    • After FLASHBACK TABLE<\/code>, always check index names.<\/strong> Recovered indexes retain their BIN$<\/code> names. Rename them with ALTER INDEX \"BIN$...\" RENAME TO original_name<\/code>.<\/li>\n\n\n\n
    • When multiple versions exist, use BIN$<\/code> names \u2014 not the original name.<\/strong> PURGE TABLE tablename<\/code> always targets the oldest version. FLASHBACK TABLE tablename<\/code> always targets the newest. If you need a specific middle version, always reference it by its unique BIN$<\/code> name.<\/li>\n\n\n\n
    • Disable only with a clear justification.<\/strong> System-level recyclebin = OFF<\/code> makes every DROP<\/code> permanent. Prefer session-level disable for specific maintenance scripts where you’ve already validated the operation.<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"
      Everything you need to know \u2014 from concepts to day-to-day commands What Is the Oracle Recycle Bin? Introduced in Oracle 10g, the Recycle Bin (also called Flashback Drop) is a logical container within each tablespace where Oracle stores dropped objects instead of immediately deallocating their storage. Think of it like the Windows Recycle Bin \u2014 […]<\/p>\n","protected":false},"author":1,"featured_media":5508,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"googlesitekit_rrm_CAowu461DA:productID":"","footnotes":""},"categories":[1225],"tags":[],"class_list":["post-5506","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/w3buddy.com\/blog\/wp-json\/wp\/v2\/posts\/5506","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/w3buddy.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/w3buddy.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/w3buddy.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/w3buddy.com\/blog\/wp-json\/wp\/v2\/comments?post=5506"}],"version-history":[{"count":1,"href":"https:\/\/w3buddy.com\/blog\/wp-json\/wp\/v2\/posts\/5506\/revisions"}],"predecessor-version":[{"id":5507,"href":"https:\/\/w3buddy.com\/blog\/wp-json\/wp\/v2\/posts\/5506\/revisions\/5507"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/w3buddy.com\/blog\/wp-json\/wp\/v2\/media\/5508"}],"wp:attachment":[{"href":"https:\/\/w3buddy.com\/blog\/wp-json\/wp\/v2\/media?parent=5506"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/w3buddy.com\/blog\/wp-json\/wp\/v2\/categories?post=5506"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/w3buddy.com\/blog\/wp-json\/wp\/v2\/tags?post=5506"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}