Oracle Database
Oracle can abort work when aggregate private memory exceeds its configured limit. Find the workload and concurrency behind the peak.
SQL Performance & Memory1 นาทีในการอ่าน
อ่านบทความ : ORA-04036: investigate the aggregate PGA limit
Oracle Database
Sorts and hash joins can move from memory to disk when memory or concurrency is insufficient. Inspect workarea execution modes for the affected SQL.
SQL Performance & Memory1 นาทีในการอ่าน
อ่านบทความ : Check whether SQL workareas spill to temporary space
Oracle Database
A sort-heavy request or temporary LOB can consume TEMP while several users report failures. Identify current allocations and the sessions involved.
SQL Performance & Memory2 นาทีในการอ่าน
อ่านบทความ : Find current Oracle temporary-space consumers
Oracle Database
High commit latency may involve redo flush latency, frequent small commits or scheduling pressure. Capture timed wait deltas and workload context.
SQL Performance & Memory2 นาทีในการอ่าน
อ่านบทความ : Investigate log file sync waits through commit behavior
Oracle Database
A workload can stall at log switches when checkpoint progress or log configuration cannot keep up. Identify the actual switch-related event.
SQL Performance & Memory1 นาทีในการอ่าน
อ่านบทความ : Investigate checkpoint-related redo log switch waits
Oracle Database
Some database operations publish work estimates that help support teams describe progress. Other expensive operations do not appear in this view.
SQL Performance & Memory2 นาทีในการอ่าน
อ่านบทความ : Use V$SESSION_LONGOPS without assuming every query reports progress
Oracle Database
A batch can use many workers and compete with foreground requests. Inspect the current parallel sessions and their coordinator.
SQL Performance & Memory1 นาทีในการอ่าน
อ่านบทความ : Inspect parallel workers before increasing application concurrency
Oracle Database
A performance investigation should identify which tools are available before generating reports. A feature being technically enabled does not establish that its use is licensed.
SQL Performance & Memory2 นาทีในการอ่าน
อ่านบทความ : Choose performance diagnostics that match Oracle entitlements
Oracle Database
An insert can fail when its segment cannot obtain another extent. Check allocated file capacity, growth limits and real storage headroom together.
Storage, Undo & Redo1 นาทีในการอ่าน
อ่านบทความ : ORA-01653: diagnose a table extent allocation failure
Oracle Database
An insert may fail while extending an index even when its table tablespace has room. Use the tablespace and index named in the error.
Storage, Undo & Redo2 นาทีในการอ่าน
อ่านบทความ : ORA-01654: investigate index tablespace growth separately
Oracle Database
A temporary-segment allocation failure can involve TEMP or work performed in another named tablespace. Start with the complete error and operation.
Storage, Undo & Redo1 นาทีในการอ่าน
อ่านบทความ : ORA-01652: identify the segment and tablespace needing temporary allocation
Oracle Database
A user can exhaust its allowed allocation while the tablespace itself still has room. Inspect the quota for the account named by the failing operation.
Storage, Undo & Redo2 นาทีในการอ่าน
อ่านบทความ : ORA-01536: check an account's tablespace quota