Add swap setup script to handle Oracle installation requirements

Author: shakiyam

CLAUDE.md

@@ -118,6 +118,7 @@ install-OracleDatabase/
 ├── compose.yml           # Docker Compose configuration
 ├── Dockerfile.ol7        # Oracle Linux 7 base image
 ├── Dockerfile.ol8        # Oracle Linux 8 base image
+├── setup-swap.sh         # Host swap space setup script for Oracle requirements
 ├── test-database.sh      # Database status testing script (validates DB installation)
 ├── CLAUDE.md             # AI assistant instructions for Claude Code
 ├── README.md             # Main project documentation
@@ -127,8 +128,13 @@ install-OracleDatabase/
 
 #### Available Make Commands
 
-**Container Management**:
+**General**:
 - `make help` - Show all available commands
+
+**Host Environment Setup**:
+- `make setup-swap` - Setup swap space for Oracle installation (default: 2048MB)
+
+**Container Management**:
 - `make build` - Build Docker images
 - `make build-ol7` - Build Oracle Linux 7 image
 - `make build-ol8` - Build Oracle Linux 8 image

Makefile

@@ -36,6 +36,9 @@ endif
 	@echo "Available targets:"
 	@awk 'BEGIN {FS = ":.*?## "} /^[0-9A-Za-z_.-]+:.*?## / {printf "\033[36m%-20s\033[0m %s\n", $$1, $$2}' $(MAKEFILE_LIST)
 
+setup-swap: ## Setup swap space for Oracle installation (default: 2048MB)
+	@sudo ./setup-swap.sh 2048
+
 build: build-ol7 build-ol8 ## Build Docker images
 
 build-ol7: ## Build Oracle Linux 7 image

setup-swap.sh

@@ -0,0 +1,40 @@
+#!/bin/bash
+set -euo pipefail
+
+if [[ "$EUID" -ne 0 ]]; then
+  echo "Please run as root or with sudo"
+  exit 1
+fi
+
+target_swap_mb="${1:-2048}"
+
+current_swap_mb=$(free -m | awk '/Swap/ {print $2}')
+echo "Current swap: ${current_swap_mb}MB"
+echo "Target swap: ${target_swap_mb}MB"
+
+if [[ "$current_swap_mb" -ge "$target_swap_mb" ]]; then
+  echo "Swap is sufficient (${current_swap_mb}MB >= ${target_swap_mb}MB)"
+  exit 0
+fi
+
+additional_swap_mb=$((target_swap_mb - current_swap_mb))
+echo "Adding ${additional_swap_mb}MB of swap..."
+
+swapfile="/swapfile"
+counter=1
+while [[ -f "$swapfile" ]]; do
+  counter=$((counter + 1))
+  swapfile="/swapfile${counter}"
+done
+
+echo "Creating ${swapfile} with ${additional_swap_mb}MB..."
+
+dd if=/dev/zero of="$swapfile" bs=1M count="$additional_swap_mb" status=progress
+chmod 600 "$swapfile"
+mkswap "$swapfile"
+swapon "$swapfile"
+
+grep -q "$swapfile" /etc/fstab || echo "$swapfile none swap sw 0 0" >>/etc/fstab
+
+echo "Swap setup complete:"
+free -h | grep Swap